SICK BOY Posted July 9, 2004 Report Share Posted July 9, 2004 (edited) I traded my Pro Circuits to Fro for his Dyno Port 2 into 1 pipe.I did a plug chop and the mains look good,but I have a little hesitation on the low end.I'm going to try a larger pilot,and was wondering if it was common for 2 into 1 to use a larger pilot jet then duels do? Edited July 9, 2004 by SICK BOY Quote Link to comment Share on other sites More sharing options...
DirtRider Posted July 9, 2004 Report Share Posted July 9, 2004 yes i beleive you wans like 35's or something. running 25's your asking for trouble. jet down not up. Quote Link to comment Share on other sites More sharing options...
SICK BOY Posted July 9, 2004 Author Report Share Posted July 9, 2004 Quote Link to comment Share on other sites More sharing options...
frocashmoney24 Posted July 9, 2004 Report Share Posted July 9, 2004 i was thinkin the same thing when i read that , but for refernece i was runnin a 55 pilot and a 200 main Quote Link to comment Share on other sites More sharing options...
SICK BOY Posted July 9, 2004 Author Report Share Posted July 9, 2004 I'm running 28mm Mikuni flat slides with 25 pilots,300 mains and needle clip in the stock postion(that's what I was running with the Pro Circuits).I did a plug chop,and it looks like the mains are good,I just have a little hesition on the bottom,and it idles a little low.Also after riding the track for awhile it got a little hot.I played with the air screws,and it runs best at 1 1/2 turns out.You guys think if I go to a 30 pilot it will fix my problem? Quote Link to comment Share on other sites More sharing options...
DirtRider Posted July 9, 2004 Report Share Posted July 9, 2004 maybe some one who has/had that pipe will answer. definatly dont run stock pilot though. maybe get a 35 and a 55. start with the 55 then drop down there only a few buks anyways. Quote Link to comment Share on other sites More sharing options...
J..J. Posted July 9, 2004 Report Share Posted July 9, 2004 Wasn't there a problem with the DynoPort pipe sealing Fro, or am I getting my wires crossed? Quote Link to comment Share on other sites More sharing options...
SICK BOY Posted July 9, 2004 Author Report Share Posted July 9, 2004 Alot of people have had problems sealing these pipes.I made a set of seals that should work great,and if so I'll sell them to anyone that has this problem for cost. maybe some one who has/had that pipe will answer. definatly dont run stock pilot though. maybe get a 35 and a 55. start with the 55 then drop down there only a few buks anyways. DirtRider I think I'm going to go to a 30 pilot and adjust the air screw.If I were to go to a 55 pilot it would be so rich it would foul plugs like crasy if I could even keep it running. Quote Link to comment Share on other sites More sharing options...
frocashmoney24 Posted July 9, 2004 Report Share Posted July 9, 2004 yea dynoports have the shittiest sealing systems ever, so u made a seal, wish i was smart enough to, hows it run, and how do u like that dynoport scream Quote Link to comment Share on other sites More sharing options...
sredish Posted July 9, 2004 Report Share Posted July 9, 2004 I'm going to try a larger pilot,and was wondering if it was common for 2 into 1 to use a larger pilot jet then duels do? First thing, keep in mind that (or at least it sounds like it to me) that we're comparing stock Mikunis to a single Keihen carb. The Keihens will jet TOTALLY different than mikunis even if you used the same size and number of carbs that you took off, then you remove one and cut the number of carbs in half, the jetting will be totally different. I'm running a 55 pilot, as was fro, so yes, that is totally normal. Some use a 52, some use a 48, but you use what works. Now, I don't know enough about the differences in the pilots between a Mikuni and a Keihen, so the number is bigger, but the actual hole diameter may not be too much different, dunno. Later. Quote Link to comment Share on other sites More sharing options...
SICK BOY Posted July 10, 2004 Author Report Share Posted July 10, 2004 Alright, today I put 30 pilots in and raised my needle clip from the 3rd to 4th notch and adjusted the air screws to 2 1/2 turns out.The idle is great and has lots of low end power.I now have a bog at full throttle. You guys think I should lower my mains a size or try putting the needle clip back to the 3rd notch and see how it runs?Any help would be great. Quote Link to comment Share on other sites More sharing options...
sredish Posted July 10, 2004 Report Share Posted July 10, 2004 I now have a bog at full throttle. You guys think I should lower my mains a size or try putting the needle clip back to the 3rd notch and see how it runs? Full throttle = main jet. I'd take a WOT/Full Throttle run and kill it while the throttle is still pegged in 5th or 6th, then see how the plugs look. Don't back out if it bogs, just kill it with the throttle pegged. See if the plugs look oily and wet or dry. I say this because it could be a lean bog, that's why I'd say check the plugs before you back the main off? Does it bog or sputter out? I have a feeling you might be lean. Later. Quote Link to comment Share on other sites More sharing options...
SICK BOY Posted July 10, 2004 Author Report Share Posted July 10, 2004 (edited) It is a bog.I did a plug chop before I changed the pilots and the needle clip,and the mains looked good.I had a dry plug,with white porocelin with a 2mm greyish brown ring at the base.Before I did any changes today it ran good,but it had a low idle,and a little less low end response,and it also got hot after running around the track abit (never went out of 4th gear on the track). Edited July 10, 2004 by SICK BOY Quote Link to comment Share on other sites More sharing options...
sredish Posted July 10, 2004 Report Share Posted July 10, 2004 You might try going up one more size on the main. What color was the base ring and ground strap, you'll be wanting those two to be a dark chocolate color. Quote Link to comment Share on other sites More sharing options...
SICK BOY Posted July 10, 2004 Author Report Share Posted July 10, 2004 Just did a plug chop the base ring is a greyish color and is half way up th porocelin.This should me rich right?If so that would make sense because these mains are the same ones I used for my Pro Circuits,and 2 into 1 pipes use smaller mains.I also noticed it smoked a bit after it was warmed up,and I thought it was just the lead additivein the rase gas.(I'm running Motul factory line 800 50:1 with Sunoco 110 leaded race gas) BTW Sredish thanks for all the help so far. Quote Link to comment Share on other sites More sharing options...
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