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View Full Version : what rpm to launch at?

Shift_Nissan
05-31-2005, 10:33 PM
im going to the track this saturday i need to know what rpm i should launch my car at? I got a redtop sr20det w/ upgraded T28 turbo, GP Sports Spec R exahust w/3"piping no cat,Blitz dp greddy hot pipe, Greddy Type-S bov, and Greddy FMIC and i got 17" Nismo LMGT4's wrapped in yokohama parada spec 2 tires. I will be boosting at 10psi. How fast do you guys will think my car will do?

Thanks
Jimmy
infinitexsound
05-31-2005, 10:37 PM
eh.... drag racing.... hmm i predict a low 13 maybe.. prove me wrong, but i think u need to bump up the psi... any lsd? some people like to launch hard like around 4500, me myself i like the rolling start method.. u get about a foot after the last yellow so...
TheSnail
05-31-2005, 10:42 PM
13.3 -13.7 As for the rpm launch, see what launches best. We are not computers.
Shift_Nissan
05-31-2005, 10:43 PM
no lsd yet need to save up. how much more psi do u reccomend?
sr420det
05-31-2005, 10:45 PM
raise to 1.1 -1.4 bars
TheSnail
05-31-2005, 10:45 PM
13.5-14.2sec , 14psi if you want to see what you can do.
TheSnail
05-31-2005, 10:46 PM
raise to 1.1 -1.4 bars

20.6psi??????
Shift_Nissan
05-31-2005, 10:47 PM
lol 20psi i'll blow my motor up im on stock internals crazy mofo
Shift_Nissan
05-31-2005, 10:53 PM
do you guys know any company that makes a bottom mount manifold that fits the turbonetics 60-1 turbo?
infinitexsound
05-31-2005, 10:59 PM
buy a bottom mount mani, and buy a flange.. have a shop cut and reweld.. somethings might be a little off but.. might need some re-adjusting..to make it work... or better yet search.............
S14DB
05-31-2005, 11:14 PM
7,500k and then dump it.
TheSnail
05-31-2005, 11:17 PM
7,500k and then dump it.

Thats only if you have HKS rocker arm stoppers
420sx
05-31-2005, 11:25 PM
7,500k and then dump it.

and u just gonna spin out and look like a moron. especially with no lsd and street tires.
420sx
05-31-2005, 11:29 PM
btw, i havent ran my Sr on the strip yet, but launching a ka right at about 3500 is about right. with proper burn out of corse. i ran 15.7-8 consistantly after like 5-6 bad runs. just takes practise. u should launch at about 3200-3500k. but thats my opinion. anything higher u gonna spin out
TheSnail
05-31-2005, 11:31 PM
and u just gonna spin out and look like a moron. especially with no lsd and street tires.


We were just joking.
infinitexsound
05-31-2005, 11:48 PM
looking like a moron is doing a smokey burn out to show off.. or not even lining up right... highly doubt the dude would spin out of control.. 3500 is ok, but if your gonna dump it... kinda wanna go higher... iono car condtion, driver skill, pavement all plays a factor.. but blah.. just do a rolling start.. works well and u wont break shit..
Pank
06-01-2005, 12:33 AM
put it in 5th gear and sidestep the clutch
infinitexsound
06-01-2005, 02:46 AM
^ :bowrofl: :bowrofl: :bowrofl: classic