BMW K bikes (Bricks)

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1Back to top Go down    Stripped valve cover thread on Tue May 29, 2018 7:35 pm

Packo

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I have a couple of stripped threads in the bearing caps for the valve cover bolts
Toinsert the helicoil should I remove the bearing cap or do the job in situ ???
Thanks
Mike


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83 K100 HRD outfit
77 R100RS
2008 K1200S
1983 K100
    

2Back to top Go down    Re: Stripped valve cover thread on Tue May 29, 2018 9:40 pm

Dai

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You can do the job in situ - just pack a piece of cloth around the area to catch the swarf and be assiduous in cleaning it out afterwards. The other possibility if you prefer to remove the cap is to rotate the engine until that cylinder is at TDC on the firing stroke i.e. there's no pressure on the cam cap. The advantage of removing the cap is that it will be easier to get the drill in the correct position to clean the old threads. I think I'd go this route.

Also: be very, very, very careful because the cam caps are cast from mouldy cheese and the threaded area will break up at the slightest provocation.


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'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

3Back to top Go down    Re: Stripped valve cover thread on Tue May 29, 2018 11:00 pm

RicK G

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VIP
Sidecar Paul also designed this as a fix


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"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
    

4Back to top Go down    Re: Stripped valve cover thread on Wed May 30, 2018 4:09 am

Packo

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Thanks Dai & Rick, job done, removed caps and did it on the bench. Don't think it took much longer than doing it on the bike really


__________________________________________________
______________

83 K100 HRD outfit
77 R100RS
2008 K1200S
1983 K100
    

5Back to top Go down    Re: Stripped valve cover thread on Wed May 30, 2018 1:38 pm

Dai

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@RicK G wrote:Sidecar Paul also designed this as a fix

Got that downloaded and saved...


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

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