I'll be doing a 1km topend fun run this Sunday and probably be pushing 550whp....tuning tonight.
What kind of speed you guys recon could be achieved over a 1km sprint? The cars weight probably close to 3300lbs.
Guys that have done this before your input would be appreciated.

 

.62 miles from a stop I assume?

Unless running radials your traction and in turn your speed will suffer.

If I had to guess 160mph easy. There is a 1/2 mile stretch of road by my old house I can start at very slow speeds hit 160mph and hit the brakes easily in time to make the turn. That was with my old weaksauce 580whp and my car weighs 3280lbs.

 

Single Turbo. Hm. I'm going to say like 166 mph. The GTR does the 1 mile in 165ish in stock form. I'm sure in .62 miles you could get to that mark. It would be tough though. I'd run radials.

 

thanx guys, but tuning didn't go that well.

i am running low boost 7.5 psi for a while now @ 429whp but last night going higher boost drops......probably boost leak.
I triple check all piping but nothing, so no time to fix.
I might just do a low boost run.

 

i personally wouldnt run the car if you have unknown power problems

 

ya, you right not going to. turned out i have boost/vacuum leak somewhere around the manifold.
sprayed carb cleaner deep down and idling was affected....probably gasket.