people with the SY3500
My normal launches are hold at 1100 and hammer flash it on the second yellow.
Worked for 1.7x on hot nittos and now 1.48s on slicks and a 100 shot.If we hit the street this evening or tomorrow night, I run a quick test for you and let you know how it looks.
Rick
I am brake stalling at about 2700 right now on the SY-3500. That's with fresh pads in the last 3000 miles and normally using the line lock to avoid rear pad wear.
Rick
What 60 foot do you average when footstalling to 1800? How much of a difference do you get if you footstall from say 1500?
Lid, filter, MAF, catback, headers, tuning????
What tires are you running that you are dead hooking??
Rick
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i would actually increase your tire pressure, see if they are moving on the rim during your launch (dab spot of polish on rim, old school style), and see where you go from there. what tire are you on makes a difference, but if you are overhooking the car, that is a problem as much as spinning. also what are your times off idle just punching it? good luck and ask any more Qs, we are here for ya!
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The track I go to is really sticky.
24 psi. launching at 1500...1.927
20 psi. launching at 2000...2.012*
20 psi. launching at 1500...1.923
20 psi. launching at 1800...1.926
20 psi. launching at 2200...1.927
17 psi. launching at 2200...1.911
The above runs were all on the same day, with the last run having much cooler weather. The run with the astericks had spin.
22 psi. launching at 1100...1.888
22 psi. launching at idle...1.881
These runs were on the same day, with the last run, again, having much cooler weather. (if weather affects the 60 foot)
From what I can tell it is a dead hook. I can't feel any noticeable spin. My brothers watching the run didn't see any tire rotation...but I'll try the polish thing next time I go. I really appreciate the help...since I'm a rookie at all of this and these runs were just my 2nd and 3rd time at the track.
With the advice you guys have given, I'll try 24 psi at idle and work my way up and see how that goes, unless you guys have a different suggestion. Thanks.
Brian
also just listen to good advice and more importantly practice practice practice. you will be easily 1.7, esp on a good track.
Spinning can often result in wheelhop which is one of the biggest killers of drivetrain parts I can think of. The only times I've ever busted drivetrain parts, it's been when I've spun. (Busted the spider gears once. Stripped an axle once.)
and i agree with you colonel, wheelhop spining that much will def shock that driveline and break parts. One thing you want to do when you are checking for the right launch is change one variable at a time. You don't want to play with pressure and play with launch RPMs at the same time.
I would recommend trying the 1100 hammer it flash approach first. Start the tires at 21 lbs. and drop a .5lbs each run until you get your best 60'. That will give you the best pressure. Then once you find that, try upping the RPMs 200 at a time to see where your best 60' is.
Rick

