I am currently doing some research on 4 strokes to see if they will be right for me, I have ridden a few apexes, and RX-1's. I cant afford an Apex right now so it would probably be an RX-1, one of my concerns is about jetting, how finiky are the 4 strokes?? I know 2 strokes can be pretty finiky with altitude, but in general they arent hard to rejet, but a 4 cylinder is a bit more work. I ride from 2500-6000 ft, and basically want to start and go. Any input would be greatly appreciated, thanks.
4 stroke Jetting
- Thread starter doober
- Start date
It's not that bad once you get it right. Takes about an 45 mins to an hour if you know what you are doing. Now that I have it jetted right I can ride from 3500 to 6500 w/o any issues. Jet it for your elevation and forget it. Only time I had to jet up was when I put on K&N's and gutted exhaust. Went from 135's to 165's. Now with Turbo I am back to 135's.
J.
J.
Turbo rx1's are super easy to jet. I run 130's at 8-10000K and hit 12:5's. This is consistent from 10-15 psi. More boost you run, more pressure you send to the float bowls, more fuel so it's a linear addition of fuel to boost. This is the set up for most Trx1's. Pretty slick. The cool thing about jetting 4 strokes is you just get a wideband and it will tell you exactly where you are. I imagine at your elevation and a 2860rs you would be 135 or so with your mains.
T
Turbo Monster
Member
I ride my Turbo RX-1 from 2000-7000 plus 9 and the way down to -15 degrees celcius and never jet it.
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