BMW K bikes (Bricks)

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1Back to top Go down   Spring collet in sump  Empty Spring collet in sump Mon Dec 05, 2022 6:38 am

John1988

John1988
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Hi all purchased a clean k1100rs 1994 with 34k. Brought a service kit so decided to take the oil pan off for a clean before a oil change, noticed as I did drop the pan I heard something drop Found it in the oil was a valve spring collet only 1 half. So looks like il be busy over Xmas

    

2Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Mon Dec 05, 2022 7:57 am

92KK 84WW Olaf

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John1988 wrote:Hi all purchased a clean k1100rs 1994 with 34k. Brought a service kit so decided to take the oil pan off for a clean before a oil change, noticed as I did drop the pan I heard something drop Found it in the oil was a valve spring collet only 1 half. So looks like il be busy over Xmas
I struggle to see how a valve stays in place of one is missing and cant see how one falls out. But having said that a K is much eaier to check it on than most bikes. Means taking cams out so get yourself sorted for checking and adjusting the valve clearances too.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 54,800 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

3Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Mon Dec 05, 2022 9:47 am

Point-Seven-five

Point-Seven-five
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Having done a valve guide seal job on a 16valve motor I am befuddled at how that collet could have "fallen" out.  Those collets are held in place pretty securely and need a valve spring compressor to remove.  I can only think it got lost during a head job, or during initial assembly of the engine which is even more hard to imagine.

It sounds like you have some "interesting" work ahead of you.  I hope you keep us posted on what you find.


__________________________________________________
Present:
1994 K75RT
1991 K100RS


Past:
1988 K100RS SE
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

4Back to top Go down   Spring collet in sump  Empty valve Mon Dec 05, 2022 11:08 am

firstle

firstle
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easy fix and your lucky . Very Happy

    

5Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Mon Dec 05, 2022 2:19 pm

John1988

John1988
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active member
Hi yea I couldn’t work out how it would have come out on its own. Should of said that the collet from the sump has got wear on it so think it had to been dropped, took the plugs out after work as didn’t have time yesterday, from what I can see there’s no damage on the pistons ie dropped valve. One of the star head bolts is chewed an a mark on the head next to that bolt and below it so does look like the head has been off. Yea will defiantly keep posting what’s happening

    

6Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Mon Dec 05, 2022 4:42 pm

Point-Seven-five

Point-Seven-five
Life time member
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34K and the head has been off?  What kind of life has this bike had?

Let's hope the previous visitor to the internals used anti-seize.


__________________________________________________
Present:
1994 K75RT
1991 K100RS


Past:
1988 K100RS SE
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

7Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Mon Dec 05, 2022 5:13 pm

John1988

John1988
active member
active member
Yea that’s what I through after seeing the bolt, shame really as the bike is really clean. Yea I hope so, sort of looking forward to stripping it, really didn’t think I’d be doing anything to the engine apart from valve clearance

    

8Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Mon Dec 05, 2022 7:02 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
Here's hoping the collet you found didn't come out of one of your valves. 

If indeed you need to install it, it is possible to avoid pulling the head by holding the valve in place with compressed air and compressing the spring with a valve spring compressor that does not contact the face of the valve.


__________________________________________________
Present:
1994 K75RT
1991 K100RS


Past:
1988 K100RS SE
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

9Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Mon Dec 05, 2022 7:43 pm

MartinW

MartinW
Life time member
Life time member
Piccies of what .75 is talking about. I had to make an adapter for the Brick as one was not available at the time. I just used an old spark plug broke out the porcelain and tapped it out.
Regards Martin.
Spring collet in sump  Valve_11
Spring collet in sump  Valve_12


__________________________________________________
K75s Hybrid
    

10Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Tue Dec 06, 2022 3:38 am

John1988

John1988
active member
active member
Hopefully it isn’t, even if I did drop the collet I really don’t think I could have just left it. Ok well that would save some time, soon as I start stripping it il know what’s the next step. Least I’ve got the old plugs an got a few airline fittings in the garage. Thanks for the help

    

11Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Tue Dec 06, 2022 4:17 am

MartinW

MartinW
Life time member
Life time member
Some types of head in place spring compressors might not work or may require modification to fit. I've never used mine on a Brick cylinder head. Someone may be able to supply pictures of what will work.
Regards Martin.


__________________________________________________
K75s Hybrid
    

12Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Sat Dec 10, 2022 4:05 pm

John1988

John1988
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active member
Ok thanks well il have a look on here an online cheers

    

13Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Fri Dec 23, 2022 8:33 am

John1988

John1988
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active member
Hi all. Had a look at the bike today, checked clearances all within. Intake not missing the collet but on the exhaust side can see one of the valves is missing the collet an another one doesn’t like it’s sitting right as looks different to the rest.

    

14Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Wed Jan 04, 2023 4:06 pm

John1988

John1988
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If anyone wants to know, took the head off as wanted to sort it the proper way, all valves and seals out everything cleaned, lapped the valves now just waiting for the gasket set from motorworks

    

15Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Wed Jan 04, 2023 4:08 pm

Dai

Dai
Life time member
Life time member
Spring collet in sump  112350


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

16Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Wed Jan 04, 2023 6:16 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
Nice work!  Did you find where the collet/keeper came from?


__________________________________________________
Present:
1994 K75RT
1991 K100RS


Past:
1988 K100RS SE
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

17Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Fri Jan 06, 2023 5:32 pm

John1988

John1988
active member
active member
Point-Seven-five wrote:Nice work!  Did you find where the collet/keeper came from?
Hi yea one of the exhaust valves it was missing, could see before I stripped it as the valve was off center

    

18Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Sun Jan 08, 2023 8:33 pm

92KK 84WW Olaf

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Life time member
Life time member
John1988 wrote:
Point-Seven-five wrote:Nice work!  Did you find where the collet/keeper came from?
Hi yea one of the exhaust valves it was missing, could see before I stripped it as the valve was off center
Many years back I spent time in company of some rally drivers who were constantly rebuilding engines. A conversation about valve bounce was in progress.......... how in certain conditions a collet could come loose. I know K bikes generally cannot over rev so there should be no risk.....unless there are tired valve springs. 

Did you by any change note clearances on the strip down?


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 54,800 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

19Back to top Go down   Spring collet in sump  Empty Re: Spring collet in sump Tue Jan 10, 2023 4:24 pm

John1988

John1988
active member
active member
Hi, yea I was speaking to my mate an he said about it could have been over revved, suppose not just if it had high milage but it the age of everything. Yea done the clearance before I stripped it. Got all the buckets in the right order but did write down what sizes they are just in case they got mixed up somehow

    

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