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Oil pan bolts stripped

F

fmguzzi

Just got it firing!
Joined
Apr 6, 2010
Messages
7
I need some advise please. During my annual oil/filter change on my 1999 1100 Bassa I got a little careless and over tightened some of my oil sump (outer edge) retaining bolts to the point where I fear they have started to strip. You know how you get that sinking feeling when they go beyond the point of tightening? I haven't taken them back out to verify but it is now time to change the oil/filter again and I expect to have to correct this problem. Any fixes for this? I have to believe that its the block that stripped and not the bolt since the bolt is harder than the alloy block.

Thanks, FM
 
FM, you'll likely need to use a helicoil drill & tap kit as shown below. Every good Auto Parts store typically stocks them in all sizes.

Helicoil_kit.jpg
 
Yes Todd is right on the helicoil. I think it is 5mmX1,0 thread, but take a screw with you to be sure. When I have repaired the bottom of the block, I find it easiest to put some padding down and lay the bike on it's side. You can get better access to drill in straight (very important). I usually use loctite 271 (red) to set the helicoil and wait a few hours for it to set before putting the pan back on.
 
john zibell said:
Brian UK said:
M6x1mm
Click to expand...

Thanks Brian, my memory does slip from time to time.
Click to expand...


Yours too? Strange. Must be some kind of pandemic ... :mrgreen:

I've been strongly recommended Würths answer to the Helicoils, as they apparently are better seated.
 
You might have a problem getting enough support around a time-sert in that location Anders. Not 100% sure mind. Time-serts are a LOT more expensive too and for a low load application like a sump bolts are really a bit of an overkill.

Pete
 
Thanks folks. Helicoil it is then. Either that or never change the filter again.............
 
pete roper said:
You might have a problem getting enough support around a time-sert in that location Anders. Not 100% sure mind. Time-serts are a LOT more expensive too and for a low load application like a sump bolts are really a bit of an overkill.

Pete
Click to expand...


I can see your point. Thanks.
 
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