4 mill trail bike

[banshee mx 19]

if i get a 4 mill stroker how many cc will that make my engine right now it is bored 040 over to makr it a 358cc and is the power of a 4 mill worth the price ?

[SAVAGE420]

358cc + +4mil stroke = 384cc

[bbcmudtruck]

If you don't have a port job already, then have your cylinders ported with a mx/trail port and 4mil crank. Bump up your compression and timing. Don't forget to try a -1 or -2 swinger!!

[banshee mx 19]

ya its ported im thinkin of gettin a -1 swinger

[Wildcardracing]

ya its ported im thinkin of gettin a -1 swinger

Depending on what your transfer duration is right now, you may not be able to go to a 4mil. If the current porting is mild you might be ok.

[TwistedSheeRida]

the 4 mill is def worth the price doing mine right now. I also have a -1 swingarm im putting on. like already said if your porting is to extensive you might be fd. Im .060 over puts me at 391

[banshee mx 19]

im not shure how it is ported but i belive it is mild for trails

when i get the 4 mill i want to get some vitos 404 cylinders and pistons and get them ported for trails onilly problem with that is $$$$$

[jbooker82]

 

when i get the 4 mill i want to get some vitos 404 cylinders and pistons and get them ported for trails onilly problem with that is $$$$$

That and the vito's cylinders probably come with port timings out of the box that are at least a dune port if not close to a drag port.I would check into it before you buy them.

[zach45]

4mill defiantly worth the problems