40mm intake question

crassius

Well-Known Member
Sep 30, 2012
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lots of them have it, probably any 40mm stroke motor will have it - should soon be hard to find the old intakes
 

Jroge1523

New Member
Aug 28, 2017
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I think you meant 38mm stroke engine. I just rebuilt a engine and put a 40mm intake cylinder on a half-breed engine
 

crassius

Well-Known Member
Sep 30, 2012
4,032
156
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USA
not sure I'm understanding - over the years, any good change seems to become the new standard pretty quickly - I'd guess that 40mm stroke and 40mm intakes will be all one can find very soon - any cylinder with 40mm intake that has close enough port mapping in terms of timing height should work on 38mm stroke motors (since most 40mm strokers use an extra 1mm gasket at bottom).
 

Jroge1523

New Member
Aug 28, 2017
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Yea i havent had any problems on my half-breed 100 miles later i check the cylinder and piston for scratching none smooth as butter. i actually think my engine has more power im glad i went with the 40intake cylinder