Nissan 370Z Forum - View Single Post

phunk · 07-25-2013, 02:09 AM

Today I hit 50,000 miles and thought I would do a little testing. I have some planned maintenance and things to change around with the car to get track ready... But I spontaneously decided to see where I'm at as it sits. This was my first time with the car at the track, unless you count when it was bone stock a few years ago.

Best ET pass was 11.62 @ 116 with my one 1.9 60' (missing shift and coasting across finish line)
Average MPHs were 123 with my 2.0-2.1 60' passes that ET'd 11.7s

Mods:
Greddy TT kit at 8psi boost
ID 1000cc injectors
CJM fuel pump install kit w/ Aeromotive 340
UpRev Osiris
Custom oil cooler, can't remember what size but pretty small.
OS Giken clutch
Greddy exhaust

That's it really. Has basic normal stuff like gauges and boost controller and wheels/tires. Suspension is all stock with H&R springs.

Problems I had:
Traction. I was getting 2.0-2.1 60' times either bogging or blowing the tires off.
Knock: with no proper cool down, I was getting lots of knock in 3rd and 4th, causing my ecu to pull out tons of timing really hurting the power on the top end.
Gearing: with stock final drive, I am having to shift into 5th at the very end, which sucks because I cross the line just after shifting.

Solutions: I will put the car on alignment rack and adjust in attempt for better traction. Less tire pressure... I was running 26psi in my drag radials and should have been more like 15-18. Practice: with these changes and a good day at the track instead of a last second 90 minutes before close, I expect to get my 60' time way down. Raise rev limiter: I will raise it just a tad to see if I can keep from having to bother with 5th gear... This might be an easy .1-.2 off the ET if it gets me across the line in 4th. To address the knock I am researching water injection but with lots of research into e85 tuning since I got home, I think there's some big changes I need to make to my map first.

I feel fair to expect good improvement when I go back. I should be 60' .2-.3 better. Combined with hopefully eliminating her heat soak knocking, I am pretty confident. The car felt like a dog tonight on the top end with all the timing retard, so I can't wait to see what it does when I get it to pull like I can on the street.

Ill post up when I go back.. Hoping to get there within 2 weeks.

07-25-2013, 02:09 AM	#1 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,668 Drives: 370 Rep Power: 974723	50,000 mile drag strip test Today I hit 50,000 miles and thought I would do a little testing. I have some planned maintenance and things to change around with the car to get track ready... But I spontaneously decided to see where I'm at as it sits. This was my first time with the car at the track, unless you count when it was bone stock a few years ago. Best ET pass was 11.62 @ 116 with my one 1.9 60' (missing shift and coasting across finish line) Average MPHs were 123 with my 2.0-2.1 60' passes that ET'd 11.7s Mods: Greddy TT kit at 8psi boost ID 1000cc injectors CJM fuel pump install kit w/ Aeromotive 340 UpRev Osiris Custom oil cooler, can't remember what size but pretty small. OS Giken clutch Greddy exhaust That's it really. Has basic normal stuff like gauges and boost controller and wheels/tires. Suspension is all stock with H&R springs. Problems I had: Traction. I was getting 2.0-2.1 60' times either bogging or blowing the tires off. Knock: with no proper cool down, I was getting lots of knock in 3rd and 4th, causing my ecu to pull out tons of timing really hurting the power on the top end. Gearing: with stock final drive, I am having to shift into 5th at the very end, which sucks because I cross the line just after shifting. Solutions: I will put the car on alignment rack and adjust in attempt for better traction. Less tire pressure... I was running 26psi in my drag radials and should have been more like 15-18. Practice: with these changes and a good day at the track instead of a last second 90 minutes before close, I expect to get my 60' time way down. Raise rev limiter: I will raise it just a tad to see if I can keep from having to bother with 5th gear... This might be an easy .1-.2 off the ET if it gets me across the line in 4th. To address the knock I am researching water injection but with lots of research into e85 tuning since I got home, I think there's some big changes I need to make to my map first. I feel fair to expect good improvement when I go back. I should be 60' .2-.3 better. Combined with hopefully eliminating her heat soak knocking, I am pretty confident. The car felt like a dog tonight on the top end with all the timing retard, so I can't wait to see what it does when I get it to pull like I can on the street. Ill post up when I go back.. Hoping to get there within 2 weeks. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph Last edited by phunk; 07-25-2013 at 06:36 AM.