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1Back to top Go down    Exhaust Modification Things on Mon Oct 08, 2012 7:16 am

caferacer62

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I have not long ago cut up Saxons stock exhaust for modification and once i had it apart i noticed quite a few differences between both mine and Alby's and the three that Saxon supplied me.

Wondered if anyone on here has any ideas of the different Zorsts.

I took some pics to show them.

This is one of Saxons.



This is inside Alby's and mine was the same.



This is where it gets interesting, mine had a 27mm inner tube(one on the right) and Saxons is about 32mm and the rear outlet is bigger too.



Here are all the bits ready to weld together.



Be interested to see how it sounds once its welded up.



Last edited by caferacer62 on Wed Oct 17, 2012 7:06 am; edited 1 time in total


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Bert 2.0

Don't give in to the Black Dog!
"A Zorst, a zorst my kingdom for a Zorst"

    

2Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 7:31 am

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Strange business.
The actual original stock muffler is still on the bike....these were spares I got with a job lot of other bits including two engines etc.
The two motors are 86 models...so I just assumed.....

    

3Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 7:55 am

caferacer62

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Its just strange that all 3 that i got from you are the same. Mine and Albys were the same as each other but different to yours, not sure what year albys is but mine is a 91 model. All yours have the db rating on the muffler at 89db and mine is on the frame tube near the helmet lock and is rated at 92db. Cant remember what was on albys. Thay are all branded Gillett exhaust. Very curious i say.
Are you putting heat sheild back on or want it polished?


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Bert 2.0

Don't give in to the Black Dog!
"A Zorst, a zorst my kingdom for a Zorst"

    

4Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 8:03 am

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No heat shield...silly things they are.
Mate don't worry about polishing it!!
( I vote we whack it on the bike outside the pub)

    

5Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 8:06 am

caferacer62

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I second that motion. Be good to hear an angry sounding outfit.
Lookin forward to it.


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Bert 2.0

Don't give in to the Black Dog!
"A Zorst, a zorst my kingdom for a Zorst"

    

6Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 9:45 am

88

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Seems strange they're different. It wouldn't be abything to do with motors imported from USA or Europe v's Domestic spec?

88


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88....May contain nuts!

"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

K1100rs 1995, Remus exhaust.
    

7Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 2:20 pm

ReneZ

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Have a look at the numbers on the end plate? Maybe one for the two valve and another for the four valve engine?


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Greetings from Florida! Having a 'new' K :cyclops: Surprised-o:

Rene


BMW K100 - 1985 (0030029)
BMW K1200GT - 2003 (ZK01223)
    

8Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 3:08 pm

Inge K.

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@ReneZ wrote:Have a look at the numbers on the end plate? Maybe one for the two valve and another for the four valve engine?

4V`s got a quite different exhaust (round silencer).


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

9Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 7:42 pm

Guest


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@caferacer62 wrote:I second that motion. Be good to hear an angry sounding outfit.
Lookin forward to it.

Pulling the chair about makes the bike work a little bit harder of course....which may mean it will run 'on the pipe' a little more.
That would be a tragedy.....

    

10Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 8:47 pm

RicK G

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@Saxon7 wrote:That would be a tragedy.....
Yes I can see the tears................... of joy running down your cheeks now Very Happy


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

11Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 10:11 pm

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Are you saying I'm an immature hoon?
Well...
Bit late to start growing up at this stage I think.....

    

12Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 10:44 pm

RicK G

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@Saxon7 wrote:Are you saying I'm an immature hoon?
Well...
Bit late to start growing up at this stage I think.....

No No Not at all, fully matured just like me.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

13Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 10:58 pm

K75cster

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Yes I agree matured hoon is much better than Immature, they just dont seem to appreciate it as much as the mature ones


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

14Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 11:01 pm

K75cster

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Are those two stacks just stainless steel tubes or a composit with glass packing?


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

15Back to top Go down    Re: Exhaust Modification Things on Mon Oct 08, 2012 11:45 pm

Guest


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So, one needs to grow into one's hoon-ness......?

    

16Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 5:03 am

Albyalbatross1

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Mine came off an 87. It was a spare. If you wack Saxons on at the pub ill bring the carbtune to be sure its all good!! Smile be interresting to see the difference.

    

17Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 5:35 am

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This could be a fun ride.

    

18Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 5:41 am

col

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hope the publican doesnt mind us turning his establishment into a workshop

do you think he will get upset if bring the bikes into the bar that way we wont have to walk that far to get beers as we tinker


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1991 k100lt "the enterprise"
    

19Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 5:46 am

caferacer62

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Hmm sounds like a plan Col, hows that fairing going by the way.

As far as I'm concerned growing up is over rated.....

This trip is starting to look like a tuning excursion as well as a meet up, I like it.


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Bert 2.0

Don't give in to the Black Dog!
"A Zorst, a zorst my kingdom for a Zorst"

    

20Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 5:50 am

col

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still collecting bits and pieces still need side covers and a tank to borrow for a while mine gets painted


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1991 k100lt "the enterprise"
    

21Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 5:53 am

Guest


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I have two spare tanks......though one has no fuel pump and neither has a key for the cap. Still, you're welcome to borrow one. One is black and the other is BMW turquoise.

    

22Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 5:56 am

col

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i will catch up with you at bingara and we will hatch a plan


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1991 k100lt "the enterprise"
    

23Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 5:57 am

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* Nods

    

24Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 6:14 am

Ed

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I have a complete White 87 RT sitting in the shed , with useable parts. Eventually painting it black or charcoal. Trying to get the sidecar on the LT first.

    

25Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 6:28 am

rosskko

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@col wrote:hope the publican doesnt mind us turning his establishment into a workshop

do you think he will get upset if bring the bikes into the bar that way we wont have to walk that far to get beers as we tinker
Drop a keg in Saxons chair, fill with ice and bring the pub to the car park.


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

Basic/2 6308802K100CJ05/1988

K1100RS 0194321
    

26Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 6:30 am

Guest


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As I patiently explained to my Triumph riding brother Tim the other day:
No, I will not be spraying the inside of the chair with foam and putting a bung in it for our ride to Vic in December. He seemed unconvinced.

    

27Back to top Go down    Re: Exhaust Modification Things on Tue Oct 09, 2012 11:15 pm

K75cster

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You know sean Mature Hoonisming isnt hooning in general its a complicated expression of a competentsy set. really. I see sense in having your chair set out as an esky Perhaps its not to late for col to go get some of that new stuff they make cool rooms out of after all he has just finished his template. Anyone know what the innards are made of in these xzorts


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

28Back to top Go down    Re: Exhaust Modification Things on Wed Oct 10, 2012 5:38 am

col

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vl suzuki

might just have to stop in on the way from bingara if thats alright

there enough room for a case plus ice in a pannier

but i like the idea of a keg wont run out so quick


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1991 k100lt "the enterprise"
    

29Back to top Go down    Re: Exhaust Modification Things on Wed Oct 17, 2012 7:14 am

caferacer62

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Ok so I have now finished Saxons Zorst mod.

I went and got myself one of the small disposable argon bottles and regulator from Bunnings hardware ( gotta love getting vouchers as gifts)

Here is a pic of the cute little fella.



Saxons Zorst tacked up.Rear part.



And all welded up. Heat sheild brackets removed too.



Tried it out on my bike this afternoon and it sounds good. Hope Saxon likes the new note it gives out.

It turned out the same as Alby's but i didn't need to put a cone inside to channel the gases down the centre. Its definitly a better design whatever model they came off.


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Bert 2.0

Don't give in to the Black Dog!
"A Zorst, a zorst my kingdom for a Zorst"

    

30Back to top Go down    Re: Exhaust Modification Things on Wed Oct 17, 2012 7:42 am

Guest


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The hoon is awakening in me.....!!

    

31Back to top Go down    Re: Exhaust Modification Things on Wed Oct 17, 2012 7:49 am

col

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cant wait to hear what it sounds like


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1991 k100lt "the enterprise"
    

32Back to top Go down    Re: Exhaust Modification Things on Wed Oct 17, 2012 7:51 am

caferacer62

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And your fuel consumption will increase.... Just ask Alby.

I think its due to the inner hoon being released and the throttle being applied with gusto. Razz


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Bert 2.0

Don't give in to the Black Dog!
"A Zorst, a zorst my kingdom for a Zorst"

    

33Back to top Go down    Re: Exhaust Modification Things on Wed Oct 17, 2012 7:56 am

Guest


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The fuel consumption could be a problem...with the chair attached.

Nah...who am I kidding?? I only get about 150km before a stop these days.

Let the hooning noises begineth!

    

34Back to top Go down    Re: Exhaust Modification Things on Wed Oct 17, 2012 8:00 am

caferacer62

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Wow I thought i was getting bad mileage... I get maybe 250k,s round town and about 300ish on a long run. Mind you i dont change up as soon as i should cos i like all the aural delights that the K emits now.


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Bert 2.0

Don't give in to the Black Dog!
"A Zorst, a zorst my kingdom for a Zorst"

    

35Back to top Go down    Re: Exhaust Modification Things on Wed Oct 17, 2012 8:03 am

Guest


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I currently get a bit more than 210km per tank with the chair attached. It's ME who needs the stops at about 150. lol.

    

36Back to top Go down    Re: Exhaust Modification Things on Wed Jun 12, 2013 3:20 pm

MikeisonTV

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I'm curious how this exhaust sounds?!?!? video post request

Also, I'm thinking of making my stock exhaust a shorty pipe as well as a stage 1 mod (Drilling some holes in the baffling cap like illustrated below) to make her louder. What are the thoughts or probs you guys see coming up with either of these mods?

http://www.youtube.com/watch?v=6tW2enFYB6o&feature=endscreen&NR=1


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Yep! I'm flipping through the air....that ain't good.
    

37Back to top Go down    I'd be... on Wed Jun 12, 2013 7:30 pm

ibjman

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I'd be more interested in seeing that welding set up with the little argon bottle on the wall there. That weld looks awfully nice.
It's stainless steel, right?

    

38Back to top Go down    Re: Exhaust Modification Things on Wed Jun 12, 2013 8:00 pm

AL-58

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@Saxon7 wrote:I currently get a bit more than 210km per tank with the chair attached. It's ME who needs the stops at about 150. lol.

I ran my tank out to 275 last Monday. I had a 5l fuel can in the boot for just in case. Worked out at15 km/l

Al


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'87 K100RS/HRD sidecar (1100 motor)sc25
'92 K100RS-16v (an ongoing renovation project, registered and on the road with original patina)

'87 K100RT with Paralever backend

"money cannot buy happiness, but it can buy another K and that's the same thing"

    

39Back to top Go down    I need to... on Wed Jun 12, 2013 9:06 pm

ibjman

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I really need to get busy and do an out of fuel test myself before I leave for the BMW rally in Salem in July.
Currently, all I know is that my 4L light comes on at about 140 milesand I usually try to fuel up at 175.
My guess is that if I pushed it.....it would run out at 220-225.
Anyone know? (85LK100rs)

    

40Back to top Go down    Exhaust Modification Things on Wed Jun 12, 2013 9:24 pm

Wigwam

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I really liked the welding and craftsmanship, but I like the sweet understated sound of the OEM exhaust. The bike in the YouTube video sounded like a sick rototiller, in my opinion of course.

Good luck brother.

Wigwam

    

41Back to top Go down    Re: Exhaust Modification Things on Wed Jun 12, 2013 9:54 pm

smithy

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Looks like a great job on the exhaust, But by opening the exhaust up you may have to give the engine more air and adjust the throttle bodies to get what a real hoon needs. Also to stop backfiring on deceleration ?

    

42Back to top Go down    Re: Exhaust Modification Things on Wed Jun 12, 2013 10:15 pm

RicK G

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I donr need to do anything to my system as in the last few days I got a staintune for both K75 and K100. Sometimes you just gotta be lucky.


__________________________________________________
If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

43Back to top Go down    Old exhaust Mod Post Re-opened on Thu May 18, 2017 7:26 am

GF Wollongong

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As I have a spare $30 stock K100 muffler in the shed, I got to thinking about exhaust mods to "improve" the sound

Back in 2012, one member was posting the changes he had made - all seemed to be going well.

http://www.k100-forum.com/t3622-modifying-a-standard-muffler

http://www.k100-forum.com/t4528-exhaust-modification-things

At the end of the second post, this question came up:

Looks like a great job on the exhaust, But by opening the exhaust up you may have to give the engine more air and adjust the throttle bodies to get what a real hoon needs. Also to stop backfiring on deceleration ?

Does anyone know whether more air and adjustment of the throttles are needed.
How have these mods gone in the long term (ie 5years later)?

Then Rick chipped in with:

"I donr need to do anything to my system as in the last few days I got a staintune for both K75 and K100."




I've got a round staintune on my parts bike. How much better are these mufflers?


Would still like a less genteel sound to make me feel like I'm going faster - even if I'm not.


Any thoughts / experiences?


Thanks

Guy

    

44Back to top Go down    Re: Exhaust Modification Things on Thu May 18, 2017 8:04 am

RicK G

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Get in touch with Staintune, at Bowral I think, and get them to issue a mod plate for the bike because the powers that be (cops) don't like it without the plate, but they do sound really nice.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

45Back to top Go down    Re: Exhaust Modification Things on Thu May 18, 2017 9:08 am

Gaz

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I did what Rick has suggested only last year in regard to the Staintune Exhaust systems on both my boxer and my K1100. NSW police at the time were having a campaign on any after market exhausts on bikes they checked and issuing infringement notices. The notices were not for excessive noise as they did not have the necessary equipment to properly test the noise levels but for not having a compliance plate for the third party exhaust attached to the bike.

My two systems were bought and installed around 1999/2000. I just took photos of the bikes showing the exhaust side and close ups of the ADR plates and emailed to Staintune with a request for a compliance plate to suit each one. There was a small fee for the supply of the plates. Peace of mind.

I just noticed on the Staintune web site that the business is up for sale so it might be worth chasing up sooner rather than later.

Cheers


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Gaz
95 K1100LT 0232224; 90 K75 6427509; 87 R80G/S PD 6292136
    

46Back to top Go down    Re: Exhaust Modification Things on Thu May 18, 2017 5:36 pm

MartinW

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Apparently BMW got it right with the exhaust, although it may sound better. OEM performs better than aftermarket in the Dyno Tests that I have seen. There was one for a Staintune and the Luftmeister I've found the Luftmeister one. http://www.ibmwr.org/ktech/dyno-update/index.shtml If I find the Staintune I'll post it.
Regards Martin.

    

47Back to top Go down    Re: Exhaust Modification Things on Thu May 18, 2017 7:16 pm

MartinW

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Staintune Dyno run how this relates to the K100 I don't Know. http://www.eilenberger.net/k75exhaust
Regards Martin

    

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