SiBag Posted January 12, 2018 Share Posted January 12, 2018 (edited) Quick question. When using a 40 though (2mm) copper base gasket / spacer plate, would you need to use standard base gasket as well ? Or would the copper seal ok? This will be used on a 750 / 815 long stroke short stroke hybrid. Cheers.. Why the heck have I put this in air cooled it should be in Oil cooled. Admin can you please move it.. Thanks.. Edited January 12, 2018 by SiBag Wrong location Quote Link to comment
dupersunc Posted January 12, 2018 Share Posted January 12, 2018 Do you mean 40thou. 0.040" ? That's 1mm. Quote Link to comment
Gixer1460 Posted January 12, 2018 Share Posted January 12, 2018 (edited) ^^^ beat me to it! Why use copper instead of a std gasket? If you need to adjust piston projection or compression - do it with base gaskets - for example, as I had 12:1 forged pistons, I added a 2mm alloy base gasket to drop CR for turbo use. It's not ideal as you lose the squish band so combustion suffers but either that or deck the pistons and carve out the chamber to lower comp. Forget to add - copper gaskets tend to seal better if the block is wire 'o' ringed but with a NA application i'd stick with a decent Cometic MLS Edited January 13, 2018 by Gixer1460 Quote Link to comment
SiBag Posted January 12, 2018 Author Share Posted January 12, 2018 (edited) 4 hours ago, dupersunc said: Do you mean 40thou. 0.040" ? That's 1mm. Ahhhh, good point.. Brain not working, it would be 80 thou, and I don't think they do a copper one that thick only aluminium. Edited January 12, 2018 by SiBag Quote Link to comment
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