theshee Posted October 31, 2007 Report Share Posted October 31, 2007 I have a 370 long rod crank for my wifes bike I was going to put on stock cylinders... I may be getting a 68mm bore stock stroke cub cylinder, will the 370 long rod crank work or will I need a stock crank? Quote Link to comment Share on other sites More sharing options...
2strokespirit Posted October 31, 2007 Report Share Posted October 31, 2007 As far as I know a 370 is still stock stroke, only a longer rod on a oem crank, that was the first long rod setup they used with the blaster pistons and RD400 rods. For best results the port timings needs to be change and you will have to use 795 series pistons, but yes it will work. Let someone confirm this as well. Quote Link to comment Share on other sites More sharing options...
trex banshee Posted October 31, 2007 Report Share Posted October 31, 2007 From my knowledge i think that your 370 long rod crank is just a stock stroke like 2strokespirit said. But i don't think your port timing will have to be changed. Cause all it is doing is putting a 5mm longer rod on the crank...so you run 795 series pistons which i believe has the wristpin 5mm higher.(not 100% sure ive never ran them or seen them) so that brings your port timing back to where it is supposed to be, so all you get from the longer rod is less of an angle on the rod and piston i could be wrong but this is how i think it works. :biggrin: Quote Link to comment Share on other sites More sharing options...
dajogejr Posted October 31, 2007 Report Share Posted October 31, 2007 All you're doing is lessening the rod angle, you're not changing the stroke.. Get blaster pistons (since they don't make 795 series in 68mm, 66 is the largest I've seen...(.080)... Some guys on here use WSM forged pistons, Nate McCoy likes them... I've never used them, so I can't tell you. Port timing won't change... Quote Link to comment Share on other sites More sharing options...
theshee Posted October 31, 2007 Author Report Share Posted October 31, 2007 Got everything on its way. Cub, head, carbs, domes... everything for my wifes new motor. Jeff, thanks for getting all that stuff sorted out, I was kinda lost at what pistons and stuff I needed. Quote Link to comment Share on other sites More sharing options...
FASTOYS Posted November 1, 2007 Report Share Posted November 1, 2007 Got everything on its way. Cub, head, carbs, domes... everything for my wifes new motor. Jeff, thanks for getting all that stuff sorted out, I was kinda lost at what pistons and stuff I needed. Thank You Keil , glad we keep all that on hand and ready to go! Holler if you need any help.... Quote Link to comment Share on other sites More sharing options...
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