BMW K bikes (Bricks)

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1Back to top Go down    Exhaust studs on Tue Oct 10, 2017 3:42 pm


Gold member
Gold member
Hi everyone

I recently replaced the exhaust studs on my 1984 k100.
I decided to use an alternative to the genuine parts.
The genuine exhaust studs have an expansion joint.
The studs motobins and Motorworks sell don't have this.
Due to financial constraints, I decided to use m8 bolts and cut them to size.
I purchased m8 high tensile? Yellow zinc bolts from Bunnings.
Retail price was $8.00.
I am concerned because the bolts I use do not include the expansion joint ( section of the stud which is not threaded)
I presume this is to allow for expansion of the exhaust headers.
Should I be concerned?
I have tightened the exhaustnuts firmly and I doubt have made Any allowances for the expansion of the motorcycle components due to heat from the exhaust components.
I intend to replace the studs with the genuine parts as soon as my financial situation improves.
Any suggestions?
all advice is appreciated.
Thank you for your time.




2Back to top Go down    Re: Exhaust studs on Tue Oct 10, 2017 4:29 pm

RicK G

I certainly wouldn't be concerned about doing it that way, just use some never seize on the threads especially in the head.

"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

3Back to top Go down    Re: Exhaust studs on Tue Oct 10, 2017 6:30 pm


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Life time member
As Rick says, it should not be a problem. I wouldn't worry too much about replacing them later either.

'83 K100 upgraded to K100RS spec
'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)

4Back to top Go down    Re: Exhaust studs on Tue Oct 10, 2017 6:43 pm


+ 2

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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O

5Back to top Go down    Re: Exhaust studs on Tue Oct 10, 2017 9:19 pm


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