upgrading engine

[maddmike]

What's the most cost effective way to get more Rome and maybe more power front stock engine. I already have 7500 rpm spring on and rear mount dominator but want more rpms

 

[KrashKrieg]

Search around this forum, lots and lots of posts on pipes

Jet Pro seems the way to go for RPM's but I prefer the mid range and sound of the CPI

 

[GTS 666]

To gain cheap Rpms I out of a stock engine the easiest way is to pull the head of it and buy a die grinder. Lighten the piston Raise the exhaust port timing and match the case and head for better flow. Remove the flywheel and shave the fins down to lighting it as well. It's not difficult to do and will help gain some higher Rpms.

 

[Deluge1]

Here's more info on modding engines...

How to get more power from your Zenoah 230 Pum engine

Porting info and links

 

[maddmike]

Well besides porting. Can I pick up a new head kit or get a lightened flywheel or something like that. Want to upgrade to obr but gonna get all I can from this one

 

[Deluge1]

Yes, you can throw a head kit on it.

Here are a few options...

ESP Mod/ESP CHAMPIONSHIP PORTED GP290 36mm kit

Race Ported 2 Bolt 30.5cc Top End

The stock motor already has a +2mm crank. So, you don't need a new one.

 

[maddmike]

Saweet thanks for the links!!!