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02WhiteandBlack 01-10-2010 08:38 PM

Boost Launches
 
Ok iv got two questions...

First when i boost launch I usually just run it up to 1400 rpm in first and dump the clutch, well the other day i was racein my buddy in a mostly stock common rail and knowin his truck if i could get him off the line i could beat him so i ran it up a lil higher maybe 1600-1700 rpm and when i dumped the clutch again in first it hoped twice and then the diff poped into nutreal is there sometin wrong or just to high of rpm because this is the second time its done it...

And this leads to my next question how are some guys boost launchin in third gear and 2000 rpm? aftermarket clutch? or is there a special way you have to do that?

94cummins12v 01-10-2010 08:40 PM

when i do boosted launches i do them in 3rd 1st you dont realy gain anythinf secound is better. i do 3rd gear boosted luanches with 10psi of boost by reving it up then dumping the clutch your onching it like an auto

02WhiteandBlack 01-10-2010 08:57 PM

Do you let the clutch out slower or do u dump it because anytime iv tryed to dump the clutch in anything high than 1st it wants to stall out and seems alot slower than dumpin in first

kazairl 01-10-2010 09:09 PM

I usually rev it to about 2400 or so and let the clutch out quickly. Don't dump it but try letting it slip a little before you let it all the way out.


This is in no way conducive to long clutch life. I would not recommend it on a stock clutch.

02WhiteandBlack 01-10-2010 09:12 PM

Ya im more worried about clutch life so i think ill stick to what iv been doin

Lil Red Express 01-10-2010 09:40 PM

I use run my old 97 up to around 2800 and let the clutch out in 3rd. Went through several clutchs even bigger aftermarket ones. Along with several 5spds.:ouch:

07redsled 02-13-2010 02:11 PM

pull out in 2nd and learn how to shift faster :choochoo:

bajabomber87 02-18-2010 12:28 AM

How big are your tires and what gears do you have if 2nd isn't working? :ouch:

94cummins12v 02-18-2010 01:29 AM

even with my 37" tires i have no issue doing boosted 3rd gear launches when i hit the strip i even do it id 4hi then release the hubs when im in 5th

mfolsomblueD 02-18-2010 06:11 AM

Bring them up to about 2800-3000 and just dump the clutch in 2nd and then hit 3rd quickly and if your shifts are good that will get you off the line


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