patsbansh Posted June 25, 2011 Report Share Posted June 25, 2011 My buddy has a 350 with stock carbs converted to alky with a turbo on it. This bike is running way to rich it won't spool up the turbo. The needle is all the way down to the last clip in the slide, the power jets are closed to 1 turn out and the air screws are out at 2 1/2. the plugs read only on the metal strip above the electrode. my understanding is that the plugs will read 180 degrees when properly tuned . I really don't want to put a hole in the piston but the leaner i get the closer i get to it being right. The turbo has been starting to produce more boost the leaner i go but i am about out of adjustment without drilling another set of mains smaller. Any and all help is greatly appreciated. Thanks Quote Link to comment Share on other sites More sharing options...
BigRed350x Posted June 25, 2011 Report Share Posted June 25, 2011 If it is on a turbo setup, I would run gas. You will spend a lifetime trying to tune in the turbo AND the methanol. Gas and a turbo will give you more than enough power... Quote Link to comment Share on other sites More sharing options...
shanYE west Posted June 25, 2011 Report Share Posted June 25, 2011 i'd send a pm to n20toofastforu or something like that.. see what he says. Quote Link to comment Share on other sites More sharing options...
bluedevshee85 Posted June 25, 2011 Report Share Posted June 25, 2011 i'd send a pm to n20toofastforu or something like that.. see what he says. the motor i have is his and i've been in contact with him. we r jus tryin to get some pics of some plugs to judge were im at with my jetting but thanks. Quote Link to comment Share on other sites More sharing options...
camatv Posted June 26, 2011 Report Share Posted June 26, 2011 (edited) what are the mains at adn dump tubes.? why not like a 115 dump and 115 mains with a pj.? spooling the turbo off the line is going to be the challenge. yoru gonna need a stutter or slip the hell out of the clutch.. plus your gonna need to be spot on with the low/ mid of the tuning. not stupid fat rich like most set them up ( alky) Edited June 26, 2011 by camatv Quote Link to comment Share on other sites More sharing options...
bluedevshee85 Posted June 26, 2011 Report Share Posted June 26, 2011 what are the mains at adn dump tubes.? why not like a 115 dump and 115 mains with a pj.? spooling the turbo off the line is going to be the challenge. yoru gonna need a stutter or slip the hell out of the clutch.. plus your gonna need to be spot on with the low/ mid of the tuning. not stupid fat rich like most set them up ( alky) yes it is im workin on tryin to get this thing to spool. im not sure what the mains are at. i need to get to a dam machine shop to figure it out. i measured the main at 3/32, what ever that is not sure. Quote Link to comment Share on other sites More sharing options...
camatv Posted June 26, 2011 Report Share Posted June 26, 2011 here is a chart? http://www.seoconsultants.com/charts/inches-decimal/ from what i understand the turbo is going to be difficult to spool unless you are building a lot of heat in the pipe. to get alky to do that its going to be as fine tuned as it can be idle, off idle and mid is going to be nearly spot on its going to need to sound like a gas bike.. and then you are going ot need to be carefull about burning it down.. get the tune right should run bad ass. i would really think if your not really really really good at tuning a turbo adn alky would be a big challenge.. i personally wouldnt try it without billet bowl'd alky lectrons. with as easy as they are to change jetting. wouldnt be as hard to do. Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted June 26, 2011 Report Share Posted June 26, 2011 (edited) measure the mains and dumps. Cam, there is WAY too much velocity through the carbs to burn it down without serious effort. You guys have to realize that the velocity will pick up HUGE amounts of fuel through both the PJ and the main. If its all closed and still rich put a set of mains and dumps in it. You are WAY over thinking it. Tune it just like any other alky bike. Edited June 26, 2011 by n2otoofast4u Quote Link to comment Share on other sites More sharing options...
camatv Posted June 26, 2011 Report Share Posted June 26, 2011 yea now from what i understand about blow through carbs set ups. as the pressure increases the fule pressure has to increase also. ifiit dosent blamo no fuel in engine exhaust heat goes sky high turbo spools super hard and deto rears its ugly head and the top of the motor blows off.. OOPS! no again i dont know what all your doing with a turbo set up but the one i seen of his ran great so not sure why your having issues with it since you bought it? unless the set up has cnaged significantly Quote Link to comment Share on other sites More sharing options...
bluedevshee85 Posted June 27, 2011 Report Share Posted June 27, 2011 yea now from what i understand about blow through carbs set ups. as the pressure increases the fule pressure has to increase also. ifiit dosent blamo no fuel in engine exhaust heat goes sky high turbo spools super hard and deto rears its ugly head and the top of the motor blows off.. OOPS! no again i dont know what all your doing with a turbo set up but the one i seen of his ran great so not sure why your having issues with it since you bought it? unless the set up has cnaged significantly i haven't changed anything since i got it. i plan on doing full pulls(1/4) with it so i want to get this this right. the only difference is that he lives on the west coast and im on da east in nj. im workin on gettin it jetted properly for my area. thanks for the chart. Quote Link to comment Share on other sites More sharing options...
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