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51Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Wed May 16, 2012 8:41 am

charlie99


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looks about right for any head with lots of miles

a little valve grind and replace the valve stem seals ...clean up the intake rubbers and reseal them ...probably rings as well

+ a clean out of the carbon ....dont forget to do the intake and outlet ports ...there is a long held theory that about 400 grade polishing of the ports is the best option and get rid of casting flaws for better flow

the new head gasket should solve the rest .

    

52Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Wed May 16, 2012 9:45 am

twincarb

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Sounds about right to me Charlie... I am just debating whether to strip the top end down before putting it into the soda blaster.... or put it in whole....

I know i am going to have to take the valves out so i can clean them properly and reseat them!

Not to sure about the rings as looking up from the bottom into the back end of the cylinders it all looks good and nice and clean no sign of anything blowing...

I have got the new head gasket ready here so all is good in that respect Very Happy

Pondering on the idea of taking both halves to an engineering workshop for them to dip them in a bath to chemically clean both halves....

    

53Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Wed May 16, 2012 12:50 pm

twincarb

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@Rick G wrote:Check that head for flat because the #3 combustion chamber had had a bit of water into it by the look of the valve heads and the piston crown.

The water that had got into Cylinder 3 was my fault when i set about the bike with the jet wash.... I hadn't secured the spark plug in properly hence it allowed water in.

Having been able to inspect things a bit closer I am not to worried about the state of it... It looks like cylinder 1 and 2 have a large build up of crap that would explain the staining i have on the outside of the spark plugs.

The head is now minus it's valves... all bagged up and ready for cleaning... If anyone else needs to remove their's i would reccomend this style tool.

1988 K100 LT Rebuild... - Page 2 04021110

It's far easier to use than the ones that have a compression handle.

All ready for a spot of soda blasting action tomorrow....

    

54Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Wed May 16, 2012 7:43 pm

Inge K.

Inge K.
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@twincarb wrote:I have had a little niggle that there was something not quite right with my O/P shaft... I have now figured it out having had a look at Berts restoration page... My bike is an 88 model which means it should have 12 rivets but I can only count 6!
The 12 rivet shaft was first introduced on the 4V models (-89),
and then used on all other models shortly after this.

Inge K.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

55Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu May 17, 2012 12:31 pm

twincarb

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Oh right, I had though that they changed over in 85, my bad...

    

56Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu May 17, 2012 12:51 pm

twincarb

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Today I have mainly been cleaning... I used the soda blaster to shift the majority of the crap, which took off most of the gasket, a few stubbon bits needed the assistance of a razor blade, and then back into the soda blaster to finish it off... Not as clean as getting it chemically cleaned mind... so that may still be an option.
I am thinking a chemical bath would be best for the bottom end as it would save me having to remove the pistons... Unless anyone thinks i am mad for doing it that way???

1988 K100 LT Rebuild... - Page 2 Img_2213

1988 K100 LT Rebuild... - Page 2 Img_2214

1988 K100 LT Rebuild... - Page 2 Img_2215

I have still got to remove the oil seals, has anyone got any tips?
I also still need to clean the valves, I tried one i/p and one exhaust valve in the soda blaster... The I/P cleaned up ok but the Exhaust is still well baked... best option to use oven cleaner on them?

    

57Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu May 17, 2012 1:17 pm

charlie99

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oven cleaner sounds good ...but beware the cheap stuff ....it just doesnt work ...even in ovens

get those ports smoothed out ...some good casting marks in there i saw


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O1988 K100 LT Rebuild... - Page 2 Au-log10

"redframe" rs "bitsa"  with many contributions from the k100 community ,,with many thanks
    

58Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu May 17, 2012 1:24 pm

twincarb

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I Use Oven Pride essentially you pour it into a bag and then place the part inside..... and then allow it to kick arse!

Think i will get 8 bags and split it between them and just allow it to do it's job.... all the time not mixing up the parts!

The Exhaust ports have definitly never recieved any port flowing hehe.... yet! Wink I think being very carefull with the dremel would do the trick.....

    

59Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu May 17, 2012 2:41 pm

Inge K.

Inge K.
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@twincarb wrote:I have still got to remove the oil seals, has anyone got any tips?

Here is a picture of a tool made for this use, you might get an idea of making your own..........a cheap needle nose plier and a mig welder.

1988 K100 LT Rebuild... - Page 2 Ventil10


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

60Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu May 17, 2012 2:44 pm

Halo

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Great work Twincarb love the photos you are really getting into this, the head looks fantastic how it cleaned up.

Halo


__________________________________________________
84 K100RS 0014803
93 FZR1000 EXUP
    

61Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu May 17, 2012 3:04 pm

twincarb

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I wasn't sure if they would come out without a tool for the job, I will pop out tomorrow and get one i think. Be good to get the old seals out... Should have ordered new one's from motobins yesterday as i would have had them tomorrow and would have been able to get the bits all back in place (less likely to get mixed up then!)

Thanks Halo... I wasn't great at sorting photo's as i took the bike apart.... But am doing my best to record everything as it go's back together and as i work on each of the parts...

Tomorrow i will look at decoking the Piston Heads.... without having to strip the bottom end right down.... I am thinking about putting the whole thing into the Soda blaster as there is room, and then attacking it in there....

I am away on a course after the weekend and am going to be away for a week... so would like when i get back to be able to fit the new stem seals and get the engine put back together again.....

    

62Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu May 17, 2012 8:37 pm

Halo

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Yes TwinCarb I reckon you could just put the whole bottom end in the soda blaster cabinet and clean the pistons.

Halo


__________________________________________________
84 K100RS 0014803
93 FZR1000 EXUP
    

63Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Fri May 18, 2012 11:58 am

twincarb

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Little update for the day.... Have soda blasted the main block and it's not come up to bad... I have taken it to have one of the engine studs arc eroded as it snapped when i took it off! never mind these things happen.

I have also moved the frame into the garage so I can think about adding more to it and progressing the build along.

1988 K100 LT Rebuild... - Page 2 Img_2216

1988 K100 LT Rebuild... - Page 2 Img_2217

1988 K100 LT Rebuild... - Page 2 Img_2218

I am still trying to decide the order of fitting things back on but i am thinking Brakes, Handle Bars.... hmmmmm

    

64Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Fri May 18, 2012 12:13 pm

88

88
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Lovely deep lustre on the Blue...Keep it up my good man!

88KE


__________________________________________________
1988 K100 LT Rebuild... - Page 2 Ir-log1188....May contain nuts!1988 K100 LT Rebuild... - Page 2 Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

65Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Sat May 19, 2012 11:49 am

twincarb

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spending the day getting bits back onto the bike.... Thought i would show some pics of how it is taking shape..... I am definitley glad I choose the blue that i did! Can't wait to get the engine back so i can carry on with the Larger bits....

Oh the replacement Valve stem seals arrived today Very Happy just a shame I am waiting for the insertion/extraction tool to arrive.... In the mean time the Valves are decoking in the kitchen!

1988 K100 LT Rebuild... - Page 2 Img_2220

1988 K100 LT Rebuild... - Page 2 Img_2221

    

66Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Sat May 19, 2012 8:55 pm

RicK G

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Thats starting to look mighty nice Twincarb. I'm looking forward to the finished article


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

67Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Sat Jun 02, 2012 7:14 am

twincarb

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Ok, I haven't had a chance to do a lot since my last post, But took 10
mins out to drop into my local recovering shop... and had a chat with
them about recovering my seat.... I have now cleaned up the old one and
have dropped it off with them.... Am really looking forward to getting
it back as it is certainly going to compliment the bike!

Couple of before pics below....
1988 K100 LT Rebuild... - Page 2 Img_2222

1988 K100 LT Rebuild... - Page 2 Img_2223

1988 K100 LT Rebuild... - Page 2 Img_2224

1988 K100 LT Rebuild... - Page 2 Img_2225



Last edited by twincarb on Sun Jun 03, 2012 4:08 am; edited 1 time in total (Reason for editing : Couldnt upload pics before)

    

68Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Mon Jun 04, 2012 7:48 am

twincarb

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Seat has just been returned from the upholsterer... and I have to say i am very happy with the end result!...

1988 K100 LT Rebuild... - Page 2 Img_2226

1988 K100 LT Rebuild... - Page 2 Img_2227

1988 K100 LT Rebuild... - Page 2 Img_2228

1988 K100 LT Rebuild... - Page 2 Img_2229

    

69Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Mon Jun 04, 2012 7:55 am

Guest

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Good job. That's gonna look pretty!

    

70Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Mon Jun 04, 2012 7:57 am

twincarb

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Yeah I think/hope so... I cant wait to get to the stage where i am ready to get her back on the road Very Happy

    

71Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Tue Jun 05, 2012 12:23 am

Halo

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Looks fantastic twincarb love the seat color with the bikes colors


__________________________________________________
84 K100RS 0014803
93 FZR1000 EXUP
    

72Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Tue Jun 05, 2012 2:07 am

charlie99

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wow


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O1988 K100 LT Rebuild... - Page 2 Au-log10

"redframe" rs "bitsa"  with many contributions from the k100 community ,,with many thanks
    

73Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Tue Jun 05, 2012 9:38 am

88

88
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I've been toying a change of seat cover/colour on mine Twincarb, now I have to do it - that looks fab. With the deep lustre paint you're on track for one stunning looking K 1988 K100 LT Rebuild... - Page 2 112350

88KE


__________________________________________________
1988 K100 LT Rebuild... - Page 2 Ir-log1188....May contain nuts!1988 K100 LT Rebuild... - Page 2 Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

74Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Tue Jun 05, 2012 10:16 am

twincarb

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Wink 1988 K100 LT Rebuild... - Page 2 Imag0320

Only looks better with the side panel in place! I think it should be on everyone's list when there bike is due a service next hehe

    

75Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Mon Jun 18, 2012 1:15 pm

twincarb

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Been a bit quiet here... I kept getting distracted and not ordering some parts i needed.... But I have done that now and waiting for them to arrive...

I have also finished off sorting out the top and bottom end of the engine as the pics show...

1988 K100 LT Rebuild... - Page 2 Img_2312

1988 K100 LT Rebuild... - Page 2 Img_2313

1988 K100 LT Rebuild... - Page 2 Img_2314

    

76Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Mon Jun 18, 2012 1:21 pm

twincarb

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Few More...

1988 K100 LT Rebuild... - Page 2 Img_2315

1988 K100 LT Rebuild... - Page 2 Img_2316

Ahh I missed to mention that the water/oil pump is now rebuilt!

1988 K100 LT Rebuild... - Page 2 Img_2317
Last one just to have a look to see how its looking more than anything else!

1988 K100 LT Rebuild... - Page 2 Img_2318

Thought I would share the stitching on the seat cause I likes it :afro: 1988 K100 LT Rebuild... - Page 2 502531

    

77Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Mon Jun 18, 2012 5:43 pm

twincarb

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Just testing to see if my signature works...


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

78Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Mon Jun 18, 2012 7:41 pm

rosskko

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That looks awesome. And it's good to see you didn't waste the excess paint. That old mountain bike in the background is looking good too.
As magilla gorilla says " It's good to have a spare"


__________________________________________________
1986 K100RT VIN 0093801K100RT with summer fairing for a northern visitor

Basic/2 6308802K100CJ  05/1988

K1100RS 0194321
    

79Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Wed Jun 20, 2012 12:42 pm

twincarb

twincarb
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Been a busy day today...

1988 K100 LT Rebuild... - Page 2 Img_2319

1988 K100 LT Rebuild... - Page 2 Img_2320

Now what to do tomorrow... fuel injection side... .cooling bits.... air box....

I am waiting for my gearbox to come back from being cleaned and then will decide if i will keep it plain or spruce it up with a coat of the black i have used elsewhere.... The black parts are suffering from dust at the moment hence not coming out great!


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

80Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Jun 28, 2012 3:34 pm

twincarb

twincarb
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Quick update,

I got the gearbox back today, wasn't impressed with how clean it was mind... but the inside was fine and I think I will spray it later... Did a write up in the How to section on how to reassemble a gearbox!


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

81Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Aug 02, 2012 4:49 pm

twincarb

twincarb
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looks like i have been really quiet on the updating side....

Well So far I have got the bike all cleaned and painted... and pretty much back together.... managed to burn out the starter motor.... oops all my own fault and I know i shouldn't have been pressing the start button for soooo long...

When i went back over to see whats occurring with the fueling side I discovered that one of my injectors wasn't working, so have bought 3 off of eBay, with any luck i should have a couple of working ones there for spares as well...

Below is how the bike is looking... I have prepped ready to spray the last few bits, just waiting for a dry day...

1988 K100 LT Rebuild... - Page 2 Img_2515


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

82Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Aug 02, 2012 5:34 pm

88

88
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Lookin great twincarb. Inspiring work. I really love the blue.



88KE


__________________________________________________
1988 K100 LT Rebuild... - Page 2 Ir-log1188....May contain nuts!1988 K100 LT Rebuild... - Page 2 Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

83Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Aug 02, 2012 5:43 pm

twincarb

twincarb
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Life time member
Quick photo from the phone in the garage, I put the lower parts of the fairing on to see how it fitted.... and to make sure I had all the bolts needed to hold it in place!!!

1988 K100 LT Rebuild... - Page 2 Imag0117


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

84Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Aug 02, 2012 5:59 pm

Inge K.

Inge K.
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1988 K100 LT Rebuild... - Page 2 112350 ...........nice colour, blend in well with your workbench.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

85Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Aug 02, 2012 6:02 pm

88

88
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I see the lower side panels are set up for crash bars....are you fitting a set? Black or chrome?

88


__________________________________________________
1988 K100 LT Rebuild... - Page 2 Ir-log1188....May contain nuts!1988 K100 LT Rebuild... - Page 2 Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

86Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Aug 02, 2012 6:12 pm

twincarb

twincarb
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Life time member
I am going to be putting the chrome one's back on.... I loathe chrome mind lol however i think that the look will be right with them chrome... although I reserve the right to wake up one morning and respray them Blue hehe Twisted Evil Twisted Evil Twisted Evil


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

87Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Aug 02, 2012 7:00 pm

blaKey

blaKey
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Wow twincarb, that's coming together really well! Love that seat.


__________________________________________________
Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

88Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Fri Aug 03, 2012 3:27 am

twincarb

twincarb
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Thanks Blakey,

I need to wheel her out of the garage again so I can finish spraying the parts, so weather depending will take some more shots Very Happy going to be spraying the fuel cap as well so need to cover the hole temporarily... I have got a new fuel pump in the bike and want to keep it immersed in fuel this time lol!!!!


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

89Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Fri Aug 03, 2012 3:58 am

charlie99

charlie99
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VIP
that blue is rather good mate ....love the seat as well


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O1988 K100 LT Rebuild... - Page 2 Au-log10

"redframe" rs "bitsa"  with many contributions from the k100 community ,,with many thanks
    

90Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Fri Aug 03, 2012 1:32 pm

twincarb

twincarb
Life time member
Life time member
Well final day of spraying bits black today, in work over the weekend so not going to have a chance to fit them... Come monday morning all the bits will be fitted to the bike, including the new Goodridge brake hose's to the rear. so i will be able to have some sort of brakes on the bike now Very Happy

List of things left to do....

Fit new front brake hose's when they arrive...
Fit new starter motor when it arrives....
sort out the injector that's not working... resistance reading is good, but its not allowing fuel to pass through... 3 replacements on there way as well just incase... and hopefully a few spare...
Get the engine to fire....
Get her back on the road in her new Colours.


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

91Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Fri Aug 03, 2012 1:33 pm

twincarb

twincarb
Life time member
Life time member
@Inge K. wrote: 1988 K100 LT Rebuild... - Page 2 112350 ...........nice colour, blend in well with your workbench.

workbench I am thinking of turning it into a sidecar as it won't need respraying to match hehe


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

92Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Fri Aug 03, 2012 3:09 pm

Inge K.

Inge K.
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It is all this innovative thinking on this forum, that got me amazed.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

93Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Nov 01, 2012 11:45 am

twincarb

twincarb
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Life time member
Ok I have been quiet for a while been tied up with work and a couple of problems... well following struggling to get the K running smooth, I did a compression test with Cylinder 4 at 0psi.... and 3 at 90 odd.... injected some oil and 3 went to 120, and 4 increased by a huge margin.
So strip of the engine was needed I took out all 4 pistons and replaced all of the piston rings. cyl 1,3 and 4 now showing 150psi and 2 is 140psi. I have got to say it was a pita getting the pistons back in with the rings particularly the middle ring which on most attempts of compressing them decided it wanted to rotate round and not stay with the pin.... I hope that the 10 psi missing on cyl 2 isn't caused by another ring problem.
I took the opportunity to also replace the timing chain. She is sounding so much quieter now which is good.

The only issue I am left with is pinking at higher revs and a high idle... which I am guessing is a timing issue...
1988 K100 LT Rebuild... - Page 2 Img_2910

1988 K100 LT Rebuild... - Page 2 Img_2911


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BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
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94Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Nov 01, 2012 11:49 am

twincarb

twincarb
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The above 2 photo's were mid way cleaning the bike! I had used her a couple for a couple of trips to work which probably caused more problems with the piston rings!

She was also being a PITA to start, which isn't a surprise with the lack of compression so took the opportunity to replace the HT leads as well nice set from RAM engineering in the UK great fit and along with new spark plugs she started within a second of pressing the go button..


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

95Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Nov 01, 2012 12:41 pm

charlie99

charlie99
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good work twincarb

whilst you had the head off, how did the valves look ?


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O1988 K100 LT Rebuild... - Page 2 Au-log10

"redframe" rs "bitsa"  with many contributions from the k100 community ,,with many thanks
    

96Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Nov 01, 2012 1:12 pm

88

88
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Great persistance towards a good result, twincarb. I love that shot down the cobbled street.

88


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1988 K100 LT Rebuild... - Page 2 Ir-log1188....May contain nuts!1988 K100 LT Rebuild... - Page 2 Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

97Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Nov 01, 2012 1:53 pm

twincarb

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The valves were all good and all sitting perfectly I took the time to check the clearances with the head on the bench and all were bang on identical which is good. (well the inlets were all 0.25 and the outlets were all 0.15.)

Am I right in thinking it's probably the timing thats just out at the moment for the pinking at higher revs and the high idle?


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

98Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Nov 01, 2012 1:54 pm

twincarb

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88KE wrote:Great persistance towards a good result, twincarb. I love that shot down the cobbled street.

88

I have now got that as my desktop screen! looking at it I wished it had stopped raining when I had finished washing the bike as the final image would have been far better!


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
1988 K100 LT Rebuild... - Page 2 1690421988 K100 LT Rebuild... - Page 2 169034
    

99Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Nov 01, 2012 10:17 pm

Inge K.

Inge K.
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Congrats, a really nice final result, Twincarb! Very Happy


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Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

100Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Thu Nov 01, 2012 11:09 pm

Halo

Halo
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Great result twincarb looks really good a love the color. Great persistence as mentioned well done mate cheers

Halo


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93 FZR1000 EXUP
    

101Back to top Go down   1988 K100 LT Rebuild... - Page 2 Empty Re: 1988 K100 LT Rebuild... on Fri Nov 02, 2012 6:01 am

mike d

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Hi twincarb,

If you want to check the timing I have the BMW tools to do the job.

For a photo of the kit, have a look at post 1 in: http://www.k100-forum.com/t3804-checking-the-timing-of-a-k100?highlight=ignition+timing

Although I hold the BMW tools for the BMW Club UK, I also have a lot of them myself. For the price of the postage you can borrow the timing tools.

Hope this helps

Mike

    

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