MaxPR0908

iTrader: (4)

well, on january 31, 2015 i visit a track on ponce P.R., (el tuque) to make some test pass to know where i am. Currently I'm all motor with full weight. The track is like a hour and a half from my house so i let the car cool down for my first pass. I little info:
95 with 05 max engine
At this point i have 274hp / 256 TQ N/A
300zx saw blades 15" rims (front)
17" 350z rims (back)
MT ET Street Drag radials P235/60R15 set to 15psi
Open diff trans -( searching for a lsd)

So on my first pass i didn't heat the tires, launched at 2,000rpm going easy on the clutch. It finish being my best pass all night

First, i think the tires are to big for me now, i pass on 3rd gear but it feels like it struggleling to make it there.. loss traction on first, second and shirped 3rd gear. Before this tires i used a 205/50r15 nitto nt01 and the car make a burnout until 2nd gear lol and i put 4th gear before finish line..
The car have power but i need to improve my 60ft times to make the real numbers.
I will be posting my progress so gurus your help is welcome.
i can make more horsepower out of it but know i just want to improve those 60'

t6378tp

iTrader: (69)

mph is there just need more seat time

MaxPR0908

iTrader: (4)

I think that he can make more mph, i will be testing again with less psi to try and make better 60' time.. i am learning how to launch because it has a lot of torque on first..

schmellyfart

iTrader: (46)

I would expect a higher trap speed out of a ~270whp 4th gen. I trapped 101.5 all night long with a generously estimated 250whp. Last dyno was 237whp.

I agree though, definitely more seat time to get the launch down.

MaxPR0908

iTrader: (4)

that's right, I will try also a lower tire.. when i get out of the track a friend in a mustang gt 4.6 with bolt ons and tune he managed to do a 13.1@105 mph and we race on the street and i win for a car and a half..not bad..

MaxPR0908

iTrader: (4)

so, what tire size do you guys recommend to put on my car? also if i bought slicks i think 24.5x8x15 is a good size.. the one that i hace right now is equivalent to 26x8.5x15..

t6378tp

iTrader: (69)

23 or 24.5inch tire is great depending on your rev limit and future plans but 26inch tire is too big for a all motor setup. also like stated doubt your making 270hp + with that trap maybe your ks went bad recently. I remember with my 3.5 swapped 4gen my ks would pull timing with launching and between shifts and I had to ground it to the battery to fix they problem

MaxPR0908

iTrader: (4)

well.. he did the 274hp but when temp raise he loss like 6hp,that something that i have to work with,i dont have nwp phenolic spacers, the rev limiter is at 7,200 rpm but i shifted at 7,000 rpm, second i think this tire setup doesn't help me with the mph but i will be testing this next week.. also this was with full 2.5 exhaust.. so there's a restrictive for this setup and another bunch of things that i have to change...as for the KS i will check on that, i have a resistor on it, but i will try your baterry suggestion.. i let you know.

t6378tp

iTrader: (69)

Also depending on your hp and tq curve 7k shift point might be to high for 2nd and 3rd

schmellyfart

iTrader: (46)

I've found that revving a 5mt out to 7k-7.2k would improve my et by .2 sec on average over the stock 6.5k rev limit in the 1/4 mile. This was tested with a gutted 00vi which makes power all the way to fuel cut and a NON ssim'd 3.5 swap in which power peaks just before 6k rpm. Both setups showed improvement with the extended rev limit.

cardana24

iTrader: (81)

Yeah, something is not adding up according to your horsepower and trap speed unless you are racing in the mountains. Are you saying that you are or you are not running a knock sensor? I had issues running a knock sensor because the launch could turn pretty violent and the car would pull timing, thinking it was knocking. I have not had this problem since running a resistor in it's place. Also, I don't remember what manifold you said you are running but with my set up (very similar to yours if I remember correctly) the standard SSIM really hurt my performance. Just to give you a point of reference my car (3.5 swapped 4th gen) traps almost 107 and I gain almost 23 mph in the final 8th.

MaxPR0908

iTrader: (4)

hi cardana.. i dont have a knock sensor.. i have a resistor 470kh if i remember correct.. my manifold is the stock 3.5 one with ported lower manifold.. you are my point of reference on this, like you said we have similar setup.. anyways i send you a pm...

I<3 A32's

iTrader: (1)

Try pre loading the clutch i got mine down by .2 Ran a 14.0 then did that got down to a 13.8. You are tuned right?