travisg77 Posted August 12, 2016 Report Share Posted August 12, 2016 Finally got around to doing a plug chop last weekend after a few modifications that I got from Jeff at FAST. Trying to get the jetting dialed in. What do you all think so far? Engine warmed up on old plugs. New plugs installed and ran WFO for one pass. 2006 SE Temp: 90 degrees Elevation: 1000' St Joe MO Stock carbs Pilot jet: 30 I might bump these down to a 27.5 to crisp up the bottom end a little Main: 310 Needle: stock middle positon A/S: 1.5 turns Carbs synched with carb tool from Jeff Klotz 32:1 50/50 race fuel/91 octane Toomey 2-1 air fliter with outerwear FAST billet adjustable timing +5 Noss/FAST head 21cc domes Fatty pipes for now Vforce4 reeds Compression: 149/147 Stock jugs/bore with no porting In-line temp gauge installed after the head: Runs betwwen 160-170 degrees Serval 421 upcoming this winter Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted August 12, 2016 Report Share Posted August 12, 2016 I would run straight fuel and see how it responds Quote Link to comment Share on other sites More sharing options...
travisg77 Posted August 12, 2016 Author Report Share Posted August 12, 2016 I missed the fact your running race fuel... at 150ish PSI and no porting and +4 timing you should be more then fine on pump. If you have access to only shity gas stations id maybe run a little race fuel but def not 50/50 I have a 250R that I mix 50/50 with. That's why I have been using it. Probably a little over kill for the Banshee with the current mods. Quote Link to comment Share on other sites More sharing options...
travisg77 Posted August 12, 2016 Author Report Share Posted August 12, 2016 Would I be safe going down to 27.5 on the pilot with my current setup. When I adjust my air screws my idle keeps going up a little when I back them out. It idles higher at 2.5-3 turns out then it does at 2.-1 turn out. I thought I read on here that if it does that then the pilot needs to go down one size until you get it around 1.5 on the air screw... Thanks Quote Link to comment Share on other sites More sharing options...
travisg77 Posted August 12, 2016 Author Report Share Posted August 12, 2016 odds are your loosing power running race fuel on the banshee and race fuel does tend to throw off plug color Really? OK I'll try some straight old 91 octane then. Quote Link to comment Share on other sites More sharing options...
Dunatic619 Posted August 12, 2016 Report Share Posted August 12, 2016 Keep the race and increase compression and timing. Id go 180 psi and +6 on the timing. Quote Link to comment Share on other sites More sharing options...
travisg77 Posted August 12, 2016 Author Report Share Posted August 12, 2016 Even without the crank being welded? Quote Link to comment Share on other sites More sharing options...
Dunatic619 Posted August 13, 2016 Report Share Posted August 13, 2016 Weld that bitch!! Quote Link to comment Share on other sites More sharing options...
travisg77 Posted August 13, 2016 Author Report Share Posted August 13, 2016 Yeah I need to. Next thing on the list. Quote Link to comment Share on other sites More sharing options...
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