15-07-2019, 08:43 AM
I agree with the above comments.
I would not rely on a compressible joint to give me the required block height - use whatever aluminium shims it takes to give you the clearances Alan suggests (n.b. some say this is only needed for 2-brg shafts but I say what happens if your C/M bearing fails?) then use a goo sealant and tighten the nuts while it is soft. This effectively gives you a sealed metal-to-metal joint. Just take care goo doesn't squish out into the interior of the engine where bits may migrate into your oil pump pick-up.
By all means check measurements Roger but I think this is one of those things which is better done empirically - do a dry assembly run and see where the piston crowns end up, shim accordingly. Even then I found the finished result was a few thou out. Too high is better than too low!
I would not rely on a compressible joint to give me the required block height - use whatever aluminium shims it takes to give you the clearances Alan suggests (n.b. some say this is only needed for 2-brg shafts but I say what happens if your C/M bearing fails?) then use a goo sealant and tighten the nuts while it is soft. This effectively gives you a sealed metal-to-metal joint. Just take care goo doesn't squish out into the interior of the engine where bits may migrate into your oil pump pick-up.
By all means check measurements Roger but I think this is one of those things which is better done empirically - do a dry assembly run and see where the piston crowns end up, shim accordingly. Even then I found the finished result was a few thou out. Too high is better than too low!