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View Full Version : Rebuilding Engine from scratch 250R Jetting Question...



jarednfischer
07-26-2006, 09:40 PM
I have the following setup being built right now.

1987 Honda TRX250R FourTrax
Bored and Ported
Pro Design Cool Head With Dome
37mm PJ Carborator
NGK Iridium Sparkplug BR9EIX
Boyesen Rad Valve with Pro Series Reeds
Wiseco Piston - More than likely an 86 piston to increase compression...
Pro Design Reed Spacer

My main question is that I need to have a good idea of what jetting to run, I will be putting this all back together myself and want to start it off right. Any other suggestions are welcome as this will be my first buildup.