3 mm stroker porting help
- Thread starter Cr500/90
- Start date
you can run a 1.5mm total spacer/2 base gaskets to adjust the cylinder/ports to the added 1.5 mm each way stroke.
Vito's and Cometic offer the spacer plate needed, IIRC ?
or have the cylider ported for the added stroke and run a single OEM/Cometic base gasket
porting being the preferred, better option and will unleash the beast
most run the keihin 34mm pj or 35mm pwk carbs with 240 kits.
you'll also need a new 34/35mm intake, and adapt your airbox boot to the new larger size carb, or an aftermarket CFM airbox/silicon boot
Vito's and Cometic offer the spacer plate needed, IIRC ?
or have the cylider ported for the added stroke and run a single OEM/Cometic base gasket
porting being the preferred, better option and will unleash the beast
most run the keihin 34mm pj or 35mm pwk carbs with 240 kits.
you'll also need a new 34/35mm intake, and adapt your airbox boot to the new larger size carb, or an aftermarket CFM airbox/silicon boot
It came with a spacer for the jug but I'm looking for any specific porting that can be done to improve power with the kit and I'm doing it myself. I've ported my other bikes (cr500/cr250) but have not dealt with a stroker crank before . This blaster if for my friends to ride I enjoy my dbikes
A stock carb will not be a good choice with a bb kit. At least a 30mm is needed and a 34-35 is ideal with proper porting,pipe,carb,air box etc. Onto porting, if you are doing it then you should know all about how to port it properly. No one is going to just give numbers away. Like every builder you should already know the mathematics to produce a proper port that is a runner. Specific porting??? Fine,drag,trail,mx. You choose the style you want.
Properly jetted the stock carby will perform pretty well, but do not expect the tops to be so great.
