rscosworth Posted July 11, 2009 Report Share Posted July 11, 2009 I was just wondering if anyone has built a 4K with a 3K crank? We have a 4K motor with a cracked crank and we were thinking of rebuilding it with the 3K crank to create a destroked motor that would thus rev to the sky. I know it would drop the compression, but we have a 3K head that has been decked 4mm, with oversize valves and HDuty valve springs, with a port matched manifold and 45mm webber. What are your thoughts and experiences? Quote Link to comment Share on other sites More sharing options...
irokin Posted July 11, 2009 Report Share Posted July 11, 2009 The stroke of a 4K is bugger all as it is, just find another 4K crank. Quote Link to comment Share on other sites More sharing options...
tojo2 Posted July 11, 2009 Report Share Posted July 11, 2009 :wink: do the maths Quote Link to comment Share on other sites More sharing options...
rscosworth Posted July 13, 2009 Author Report Share Posted July 13, 2009 Thanks for the PMs. I should really search first. 3K crank turns it to a 3K again Oh well, the search is on for a 4K crank now Quote Link to comment Share on other sites More sharing options...
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