mikeymike1987 Posted June 10, 2013 Report Share Posted June 10, 2013 I have a 10mil cub 38mm keihin pwks on gas shearer bb oof pipes unsure on the domes I think they were cut for alky by tyson...and timing I was on alky so I was at 8 degrees Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted June 10, 2013 Report Share Posted June 10, 2013 162 main 48 pilot Needle in the middle Air screw .5-2.5 turns out 7 degrees timing That should be just about right. You may need to go one way or the other with the jets. Quote Link to comment Share on other sites More sharing options...
mikeymike1987 Posted June 10, 2013 Author Report Share Posted June 10, 2013 Thank you...what needles? Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted June 10, 2013 Report Share Posted June 10, 2013 I've got DGH in our 39PWK. I'm not sure how similar the 38PWK are. Quote Link to comment Share on other sites More sharing options...
special06shee Posted June 10, 2013 Report Share Posted June 10, 2013 Dgh is also what i run with pwk39's.. But my mains and pilots are way bigger. I currently have a 175m and a 55p. Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted June 10, 2013 Report Share Posted June 10, 2013 Dgh is also what i run with pwk39's.. But my mains and pilots are way bigger. I currently have a 175m and a 55p. Really? What motor, altitude and temp? Those are huge jets. Quote Link to comment Share on other sites More sharing options...
SlowerThanYou Posted June 10, 2013 Report Share Posted June 10, 2013 Really? What motor, altitude and temp? Those are huge jets. Our fastest times on non oxygenated race fuel for both 300' & asphalt. Using bored 39 pwks, with 47 pilots, DGH in middle position & 182 mains. That was a 443cc cub at 300' ASL and around 80 degrees. Roll the dice, they all need different carb tunes. It's what works best for you, without burning up motors. Quote Link to comment Share on other sites More sharing options...
special06shee Posted June 10, 2013 Report Share Posted June 10, 2013 Dgh is also what i run with pwk39's.. But my mains and pilots are way bigger. I currently have a 175m and a 55p. Really? What motor, altitude and temp? Those are huge jets. Its a 10cub cameron did. Im around 500-900ft elevation, and temps vary from 50s to 90+. For some reason i always run bigger jets then most. Im not trying to say i have the "perfect" tune, but the hills we climb are long, steep, and soft. It puts alot of load on the motors. Imo, i personally think more fuel is better when loading a motor very hard. Once again, im not saying im right, im just sharing my opinion. Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted June 10, 2013 Report Share Posted June 10, 2013 Damn. Might be. My old 10 Cub that Cam built took the same jetting as our 18DMs. Plugs look good I guess? You're really close to my elevation too. Does the bike get hot at all? Quote Link to comment Share on other sites More sharing options...
special06shee Posted June 10, 2013 Report Share Posted June 10, 2013 No, i beat the fuck out of it and hot lap it pretty hard. Never pucks coolant. It runs really well. I actually run 180mains in the colder months Quote Link to comment Share on other sites More sharing options...
special06shee Posted June 10, 2013 Report Share Posted June 10, 2013 I do know cam dynod the bike with 165s.. But it just seems the harder i load the motor, the more fuel it likes. Quote Link to comment Share on other sites More sharing options...
Sweet1 Posted June 10, 2013 Report Share Posted June 10, 2013 Ask cam then? id do what he says to. Quote Link to comment Share on other sites More sharing options...
special06shee Posted June 10, 2013 Report Share Posted June 10, 2013 Ask cam then? id do what he says to. Im not looking for jetting advice. Im sharing. Besides, someone can only get you in the ball park with jetting. All motors are different. And anyone that has spent time on the dyno usually finds that real world jetting is usually a richer tune then the dyno tune. You cant load a motor as hard on the dyno as you can actually riding the thing. Quote Link to comment Share on other sites More sharing options...
possum Posted June 10, 2013 Report Share Posted June 10, 2013 Im at 172 and 42 . runs pretty crisp but safely fat. Quote Link to comment Share on other sites More sharing options...
mikeymike1987 Posted June 11, 2013 Author Report Share Posted June 11, 2013 Thanks for the help guys I had a set of mikuni tm38s bored over to 40 on alky couldn't get the bike tuned right last weekend after I just bought billet bowls and adjustable power jets it seems like too much carb so now I'm going to try some keihin pumpers that came off another cub and see how that goes Quote Link to comment Share on other sites More sharing options...
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