Yes, at least for a starting point when stepping up your tune up it should get you close. You'll also need to take more timing out with the bigger jets don't forget..572 BBC wrote:this is your above paragraph.when u say 6.38 and 6.22 n/f i didnt know what it meant.but i think i know what your saying about trying to shoot for same air fuel ratio weather if its 175 shot or a 375 shot.
If you get it lean enough it will start losing MPH, but when the fuel ring disappears from down inside the plug I start getting a bit nervous and stop there. Some people like to run a plug pure white with no fuel ring - that makes me nervous. A light gray ring at the bottom of the plug is what I like to see. At that point you would want to start paying attention to what your AFR is showing also. Remember as you add timing to a plug with a light gray ring, it's going to heat up and get leaner - you'll want to add fuel when you add timing if you're at that point.572 BBC wrote:so what your saying is when spraying lean it out till your car slows down,but be cautious of timing(ground strap radius is where i want heat line i know that).so if i do that i wont be in danger of aluminum specs of piston being burnt onto porcelin or any other damage then?
Thanks - I don't believe I'm the "man", there are quite a few out there a lot sharper than I am at nitrous. I just like to try and help folks out when I can.572 BBC wrote:i highly recommend this site for people to check out your da man john!
I've never really studied how accurate nitrous / fuel jets brands are. I've always flowed my own stuff to learn how much fuel/nitrous they move and go from there. There is, from what I've heard, quite a variance in quality with jets. I don't think stainless jets are worth the extra cost... I think that's just a gimmick - there is no way you'll ever have any wear that would be measurable in a brass jet. Again Dave Koehler is a great source for some nice jets at a reasonable price. He makes his own and has perfected the machining needed to make them very accurate, they are also laser etched (not stamped which can distort the hole).572 BBC wrote:also are nitrous jets created equal? like i said i have a big shot kit. my friend said he has every size jet for $5 a piece but not nos brand.if i could get nos brand ones at a comparable price id rather get brand named ones...what are thoughts on it?thank you!!!