OzVMX Forum

Clubroom => Tech Talk => Topic started by: KX250A3 on July 21, 2016, 10:10:40 pm

Title: 1974 KX250 carb jetting for a new PFR pipe with alloy can
Post by: KX250A3 on July 21, 2016, 10:10:40 pm

Hi all,
just new tonight, cheers for extra quick response Graeme, and wondering if anyone knows the correct jetting for a 1974 KX250 carb jetting for a new PFR pipe with alloy can.
The motor is stock standard, maybe first oversize, and ridden rarely by the past owner occasionally. Just to tick it over as he worked away from home a lot.
I have started VMX racing and live in metro Melb so can't really test it easily.
Any pointers would be much appreciated.
Cheers KX250A3 

Title: Re: 1974 KX250 carb jetting for a new PFR pipe with alloy can
Post by: 80-85 husky on July 21, 2016, 10:20:39 pm

no experience but I would think 1 or 2  sizes up on the main jet and drop the needle clip 1 or two slots to add more fuel. test carefully from there

Title: Re: 1974 KX250 carb jetting for a new PFR pipe with alloy can
Post by: KX250A3 on July 21, 2016, 10:39:37 pm

Cheers 80-85 Husky I was thinking the same myself.
Better to be rich than a hole in the piston or worse!!
Guess I'll order and test it in when I can.