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jambo · 10-07-13, 10:04 AM

I'll chip in, I'm quite sure dirtydog was clear on the conditions it was popping on but for some reason I'd obviously decided it was doing it with some throttle too, must learn to listen better.

With regards to the order to set jets up I'd start by saying I've never really had to re-jet so could be way off but I'd be going with YC's method from what I know. Yes the idle jets will have an affect on fuelling higher up the rev range but it'll make smaller and smaller differences. The pilots start at something like a 17.5 jet, if you changed that out to a 15 or a 19 that's quite a small change by the time you're comparing it to mains that might start at a 140, and quite easily go up to a 150+. I'd make the biggest changes first and then add the finesse.

Again, I've not got a whole lot of experience doing this in practice, but that'd be my thought and I'm happy to be disagreed with by those with experience.

Jambo

10-07-13, 10:04 AM	#19
jambo Member Mega Poster Join Date: Aug 2003 Location: Croydonia Posts: 5,376	Re: Bigger jets? I'll chip in, I'm quite sure dirtydog was clear on the conditions it was popping on but for some reason I'd obviously decided it was doing it with some throttle too, must learn to listen better. With regards to the order to set jets up I'd start by saying I've never really had to re-jet so could be way off but I'd be going with YC's method from what I know. Yes the idle jets will have an affect on fuelling higher up the rev range but it'll make smaller and smaller differences. The pilots start at something like a 17.5 jet, if you changed that out to a 15 or a 19 that's quite a small change by the time you're comparing it to mains that might start at a 140, and quite easily go up to a 150+. I'd make the biggest changes first and then add the finesse. Again, I've not got a whole lot of experience doing this in practice, but that'd be my thought and I'm happy to be disagreed with by those with experience. Jambo __________________ Modern motorcycles are bloody brilliant, enjoy it while we can Last edited by jambo; 10-07-13 at 10:06 AM.