DBRBansheeBoi20 Posted May 17, 2013 Report Posted May 17, 2013 Have a set of stock ported cylinders but i want to try a 4mm crank.... What all will i need to do?? Quote
sheerider11 Posted May 17, 2013 Report Posted May 17, 2013 Port for the stroke, domes/ cut stock head, pistons if its a 115/ long rod crank, and supporting mods. What do you want to do? Where do you ride? What's done so far to the bike? Quote
Finch Posted May 17, 2013 Report Posted May 17, 2013 depending on how they were ported you may need to find some new cyls. best would be to talk to a builder Quote
DBRBansheeBoi20 Posted May 17, 2013 Author Report Posted May 17, 2013 Right now its all tore down... Had wiseco crank but wanna go bigger an have dune ported cylinders 64.50 wanna be able to still trail ride an also race periodically Quote
Finch Posted May 17, 2013 Report Posted May 17, 2013 ya, ya may have to get a diff set of cyls as said may need to talk/send them to someone to see if they can be ported for a 4 mill. or just stick with a 350 Quote
DBRBansheeBoi20 Posted May 17, 2013 Author Report Posted May 17, 2013 Oh ok think i might just do the true an weld hot rod crank with maxload bearings then Quote
bansheegoon Posted May 17, 2013 Report Posted May 17, 2013 Tz bearings are supposed to be good too. My stock cyls were all ready ported so I got a touch up port work for 4mil it was 100 bucks and I got a polished exhaust port out the deal. Cut domes so additional 2mm up stroke won't smash the head. Get a oil seal kit, clutch cover gasket, clutch hub lock washer, base gasket the builder should provide with ported cyls, head gasket or o rings some 1211 case sealer and you should be good to go. Have fun! Quote
Finch Posted May 17, 2013 Report Posted May 17, 2013 i wouldnt run a tz bearing with out straight cuts but thats just me Quote
bansheegoon Posted May 17, 2013 Report Posted May 17, 2013 I have hinson basket with straight cuts Quote
Zillaguy Posted May 17, 2013 Report Posted May 17, 2013 i wouldnt run a tz bearing with out straight cuts but thats just me ^^^ What he said^^^ The helical gears can cause the inner race of a TZ bearing to "walk" out which will for sure damage the bearing, if not the crank or cases... Quote
DBRBansheeBoi20 Posted May 17, 2013 Author Report Posted May 17, 2013 Ok you just answered my other ? Then so would it be better just to run maxload bearings on the crank Quote
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