jetting for 4-1

[manden]

hey guys

what jetting will you recommend for a good flowing 4-1 system. eagle bla bla system-

thanks in advance

[86FJNJ]

What is your intake filter setup? Stock, foam pods, other? What part of the globe do you live in and at what elevation level? Are your carbs currently stock?

[Pat Conlon]

Excellent questions Eric

[andyoutandabout]

I heard that it's all about intake set up.
Once upon a time I had a Supertrapp four into one with Uni Pods and for that RPM fattened up the jetting.
It ran great.
Then the welds split on the Supertrapp and it was back to the standard 4 into 2.
I didn't do anything with the jetting and it runs great.

[manden]

What is your intake filter setup? Stock, foam pods, other? What part of the globe do you live in and at what elevation level? Are your carbs currently stock?

modded airbox hiflo filter. insanely lean in the bottom. live in sweden 0-1200 ft elevation

[Pat Conlon]

Ok, thanks for your info....

New #42.5 pilot jets (from #37.5) new #117.5 main jets (from #110) stock 155 air jets, if you have adjustable needles, raise up 1 clip....or if you have non adjustable needles, shim needles up 1/2 step.

Yes, FJ's were set very lean from the factory.

Cheers

Pat