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Sealing of Cylinder Sleeve

D

DaveP

Forum Mentor
General question on practice within the GS group. I have my cylinders off as I tear down the engine to replace the broken rear cam chain guide. My uncle is a mechanical engineer who has done full restoration of Honda CB's.

He is recommending that I heat the cylinders and then use green loctite between the cylinder sleeve and aluminum casting rather than just rely on the o-ring to prevent oil being drawn between sleeve and casting. This solves problems on the CB's with oil pumping and leaking at the head gasket.

Any history on this being done with the GS engines?

Thanks for the info/feedback.

Dave
 
A lot of guys don't even bother with the O-rings. At worst you could get a little oil weepage, not a leak, from the cylinder block.
 
I have the 650 apart right now, next step is changing those o-rings.

The ones in there now are probably good, but new ones came in the gasket kit, so they get changed. :-\\\

.
 
DaveP said:
General question on practice within the GS group. I have my cylinders off as I tear down the engine to replace the broken rear cam chain guide. My uncle is a mechanical engineer who has done full restoration of Honda CB's.

He is recommending that I heat the cylinders and then use green loctite between the cylinder sleeve and aluminum casting rather than just rely on the o-ring to prevent oil being drawn between sleeve and casting. This solves problems on the CB's with oil pumping and leaking at the head gasket.

Any history on this being done with the GS engines?

Thanks for the info/feedback.

Dave
Click to expand...

I've never seen any problem in this area on the roller bearing Suzukis. Point out to your uncle that they are an engine with very low oil pressure unlike the plain bearing Hondas. Barrel casting quality is better than the Hondas too - I've never seen a loose sleeve on a Suzuki but I have on a Honda...

Basically, it's not a problem so don't try to fix it.
 
Suzuki color coded their cylinder blocks and cylinders so they can be matched together with the proper liners to get a proper amount of press fit. If you flip over the block you will see dabs of different colored paint indicating the fitment.
 
I'd say if you have them use them and if you don't it doesn't really matter. When I did my top end I was short shipped the orings and didn't realize it until I assembling it. I asked Ray and he said no sweat just leave them out.
 
That seems like a strong consensus. I received the o-rings with the new gasket set and will go with that.

Thanks,
Dave
 
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