BMW K bikes (Bricks)


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puste1980

puste1980
New member
New member
Hi,
I am Alex, new to the forum. Bought in Autumn the K75RT 1990, I wish I can upload pictures but I cannot figure it out how.
I worked on the thing all winter, stripped down and reassembled, changed and upgraded parts, some maintenance here and there.
Brought it to my mech for a tune up on the engine (sparks, injectors, engine gaskets, etc..) and we found out that one of the bolts of the right cover of the engine, had a stripped bolt. In fact it was slightly leaking. The previous owner was hoping to fix it, but at the end he removed most of the steel casing that is around the bolt, so now you cannot repair it. 
My mech told me he can try to set some high temp epoxy to recreate the casing...let's cross fingers!
Any comment on this would be welcome.

    

duck

duck
Life time member
Life time member
Which bolt? Is the bolt stripped or the threads that hold it?


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

3Back to top Go down   K75RT 1990 - Engine Cover Stripped bolt and bad bolt casing Empty both Mon May 08, 2023 1:04 pm

puste1980

puste1980
New member
New member
It is one of the bolts used to attach the right engine cover. The guy probably stripped the bolt and then tried to re-thread the hole, but he completely busted out all the material. I wish I could have images, but basically the bolts are fastened into steel casings, that are embedded in the aluminum part of the engine.

    

duck

duck
Life time member
Life time member
If somebody doesn't know what they're doing then the engine cover shoulder bolts are easy to strip. Torque spec for them is 8 N-m.

K75RT 1990 - Engine Cover Stripped bolt and bad bolt casing Sd5NDDX


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

88

88
Life time member
Life time member
If it's one of the threads in a cam bridge. I took one of those to a local engineering shop and had it helicoiled. perfect fix.

I have also had the bottom front one (in the cam chain cover) stripped. I packed that with chemical/epoxy metal and re tapped the thread successfully.


__________________________________________________
K75RT 1990 - Engine Cover Stripped bolt and bad bolt casing Ir-log1188....May contain nuts!K75RT 1990 - Engine Cover Stripped bolt and bad bolt casing 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!

K1 - 1989 - AKA Titan (unique K1/K1100RS hybrid by Andreas Esterhammer)
K1100RS - 1995. AKA Rudolf Von Schmurf (in a million bits)
K100RS - 1991 AKA Ronnie. Cafe racer project bike
K75RTP - 1994
K75C - 1991 AKA Jim Beam. In boxes. 
K1100LT 1992 - AKA Big Red (gone)
K100LT - 1988 - AKA the Bullion brick. Should never have sold it.
    

Bernie_K100

Bernie_K100
Platinum member
Platinum member
Hi Alex,

K75RT 1990 - Engine Cover Stripped bolt and bad bolt casing 177912 to this forum!


Bernie

    

Jibe

Jibe
Silver member
Silver member

    

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