VictorK Posted March 22, 2012 Report Share Posted March 22, 2012 I was helping my buddy tune his cub today and while it's going pretty good it seems the bottom end is still flat. I understand it's a 421 shee and it's power isn't low but it still seems off. 421with race fuel domes, 35 pwks, k&n's no Air box, +4 timing, t5s, 162 main, 52 pilot and middle clip with air screws 1.5 out. Were about 700ft asl and it was 80 degrees today. Quote Link to comment Share on other sites More sharing options...
Surfrjag Posted March 22, 2012 Report Share Posted March 22, 2012 check over the electrical system and a new set of plugs. might even add a little timing? whats the question? Quote Link to comment Share on other sites More sharing options...
VictorK Posted March 22, 2012 Author Report Share Posted March 22, 2012 check over the electrical system and a new set of plugs. might even add a little timing? whats the question? I just threw the mods out there as it has to do with jetting but I know there's more than a couple cub guys on here who could comment on the jetting. Quote Link to comment Share on other sites More sharing options...
vulvafan537240 Posted March 22, 2012 Report Share Posted March 22, 2012 I have the same setup except pump domes and shearer inflames and hope to get it running this weekend. I was told 55 on the pilot. Quote Link to comment Share on other sites More sharing options...
Surfrjag Posted March 22, 2012 Report Share Posted March 22, 2012 sorry i should have read the title... just curious what needles your running though Quote Link to comment Share on other sites More sharing options...
SandmanPNW Posted March 22, 2012 Report Share Posted March 22, 2012 I have the same setup except pump domes and shearer inflames Quote Link to comment Share on other sites More sharing options...
vulvafan537240 Posted March 22, 2012 Report Share Posted March 22, 2012 Hey man. It happens when I forget to use my creme okay? Gotta love autocorrect. Quote Link to comment Share on other sites More sharing options...
VictorK Posted March 22, 2012 Author Report Share Posted March 22, 2012 Hey man. It happens when I forget to use my creme okay? Gotta love autocorrect. Haha Quote Link to comment Share on other sites More sharing options...
mike0chek Posted March 23, 2012 Report Share Posted March 23, 2012 i run 165 mains and 52 pilots on my 421, mods are below Quote Link to comment Share on other sites More sharing options...
vulvafan537240 Posted March 23, 2012 Report Share Posted March 23, 2012 i run 165 mains and 52 pilots on my 421, mods are below What's your elevation? Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted March 24, 2012 Report Share Posted March 24, 2012 48 pilot ,cel needle fourth clip main should be real close,the dgh that comes in the 35s are in somecases too rich Quote Link to comment Share on other sites More sharing options...
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