man27 Posted December 22, 2005 Report Share Posted December 22, 2005 I have a stock engine and I SHAVED THE HEAD 40 .The motor ran fine for 2 weeks and then blew the crank .I bought a set of jugs bored 80 over and I thought about buying a 4mm stroker crank and making a 370 stroker.Do you guys think I'm doing it right by using my same head or do I need to buy a cool head.Oh by the way I'm buying hinson clutch parts. Do you think I need to do something else let me know thanks guys. Quote Link to comment Share on other sites More sharing options...
odaen Posted December 22, 2005 Report Share Posted December 22, 2005 just depends what your budget is really. if you're gonna buy a new crank, myself, I'd go with the 4mm. the hotrods H129 crank comes welded. I've heard lately of a couple of people having problems with them in cub motors, but that's what I run in my cub. with all of the people going to 4mm cubs, there are some ported 4mm stock cylinders around that would be cheaper than sending stock jugs off to be ported. in my setup, i ran a cool head with cut domes instead of using the space plate. your budget and riding style will lead you in the right direction. Quote Link to comment Share on other sites More sharing options...
RNBRAD Posted December 22, 2005 Report Share Posted December 22, 2005 I would say absolutely get the 4mil. If you have to replace the crank anyway, why not? Like Odaen said you can probably find some good used cylinders already ported for the 4mil for fairly cheap. Quote Link to comment Share on other sites More sharing options...
badassbanshee479 Posted December 22, 2005 Report Share Posted December 22, 2005 pull it out and get it stroked!!!!!! Quote Link to comment Share on other sites More sharing options...
cudabeen Posted December 23, 2005 Report Share Posted December 23, 2005 get the 4mm crank! I bought mine on ebay,from VIP racing it's the longrod one and i picked it up for $439 (new). I looked around for a bit and didn't find one cheaper. Quote Link to comment Share on other sites More sharing options...
fastbanshee8 Posted December 23, 2005 Report Share Posted December 23, 2005 Contact Fast Racing, Jeff has really good prices, and he ships fast too. Quote Link to comment Share on other sites More sharing options...
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