locogato11283 Posted June 28, 2016 Report Posted June 28, 2016 keep in my the stronger the pulse in the motor the smaller the main... you been running high end oriented motors which could make the difference. On a side note... take note on what needles you are running.... my 10cub was showing lean with 200 mains.. after talking with FAST and Tedder on here the needle was overly lean and masking the rich main. You're on a roll today. Wrong again. I've ran 39PWK on everything from a 4mm Cub to 10mm Cub to 18DM and now 24DM. I've never had anything higher than a 162 main on any of them at 900' elevation. Quote
special06shee Posted June 28, 2016 Report Posted June 28, 2016 I have to agree with tyler. I never ran a main bigger then a 172(was pig rich) on any motor. All my motors fell in the mid 50s to mid 160s Edit: the only motor i had that used stupid jetting was a over ported cylinder with a bad dome setup Quote
mailman Posted June 28, 2016 Report Posted June 28, 2016 My 7 cub on gas runs 190's. It is the only way to keep the motor alive on long pulls up the hill. On short dyno pulls or just on and off trail riding or duning, the mid 160's to mid 170's felt and worked fine but as soon as you really load the motor for more than a few seconds, the bigger jets are needed with the 39 PWK's. I never played with the 35 PWK's but it seems like people are able to run those with much smaller jets. I talked with Slowerthanyou via PM and he confirmed that the bigger jets was the way to go. The best advise I was ever given is, "Give the motor what it wants". Good luck. Quote
J-Madd Posted June 28, 2016 Report Posted June 28, 2016 All of these numbers give me a headache. Alky ftw. Even better, Alky Lectrons FTW. Quote
guns4children Posted June 28, 2016 Report Posted June 28, 2016 what do your plugs look like post a pic. Where did you go? 1 Quote
Power_Man Posted June 28, 2016 Author Report Posted June 28, 2016 It's still holding 6.5psi for 15+ minutes. DGH needle. Middle clip. I'm basically at sea-level. Quote
Joejr915 Posted June 28, 2016 Report Posted June 28, 2016 Mine a 521 I run 28:1 also and these are my last plugs I checked 2weeks ago at the races Sent from my XT1585 using Tapatalk Quote
Power_Man Posted June 29, 2016 Author Report Posted June 29, 2016 what do your plugs look like post a pic. ill try to do a fresh plug chop this weekend. I'd do a leak down. I bet you're compensating with extra fuel. it passed leak down. it held 6.5PSI for over 15 minutes. Quote
sleeper06 Posted June 29, 2016 Report Posted June 29, 2016 I'll have to agree with mailman, most of my customers run 1/8-1/4 but regardless of bike I give it what it wants . Don't get stuck on what everyone else has , do you. . Quote
sleeper06 Posted June 29, 2016 Report Posted June 29, 2016 I'll have to agree with mailman, most of my customers run 1/8-1/4 but regardless of bike I give it what it wants . Don't get stuck on what everyone else has , do you. . Quote
lms1977 Posted June 29, 2016 Report Posted June 29, 2016 Where did you go?What do you mean Sent from my SAMSUNG-SM-N900A using Tapatalk Quote
guns4children Posted June 29, 2016 Report Posted June 29, 2016 What do you mean Sent from my SAMSUNG-SM-N900A using Tapatalk Havnt seen you around here latley 1 Quote
Power_Man Posted June 29, 2016 Author Report Posted June 29, 2016 I'll have to agree with mailman, most of my customers run 1/8-1/4 but regardless of bike I give it what it wants . Don't get stuck on what everyone else has , do you. . I'm going to reassemble and make sure everything is snug, and carbs are right. Do another chop and see how plugs look and report back in a few days. Quote
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