Nate Crisman
10+ Year Contributor
- 749
- 6
- Nov 26, 2008
-
Blairstown,
New_Jersey
Went over to Island today for sunday T&T. Got there at about 12:30, sat in tech line till 1:15, then in line till after 2:20 for my first run. The place was PACKED with cars.
Run 1:
1.640 60'
4.939 330'
7.609 @ 93.97 1/8
9.870 1000'
11.800 @ 117.14 1/4
~23psi steady boost, no knock, mid 11's a/f, 13 to 15* timing.
Launch rpm was 6200, but I didn't get on the 2step until the last light so I left with pretty much no boost/free rev. it still came out smooth and fairly quick.
YouTube - GVR4 #139 11.8@117
My wife & kids left after the first run, my boys are only 4 and 2 years old, the big loud racecars were a little too much for them. Island also seems to have a nasty yellow jacket bee problem in the stands. So I only have video of my first run. They waited over 2 hours to see me make one pass, which musta sucked.
Second run:
1.656 60'
4.837 330'
7.418 @ 96.82 1/8
9.626 1000'
11.509 @ 120.21
Boost hit 28psi and start a steady decline to 24psi by 7500rpm.
raised timing 1*, but saw some knock (less than 8counts) in 3rd and 4th.
NLTS all gear shifts, but I let out in first gear right after the launch. I let the clutch slip just a bit too much and it kept slipping after the pedal came up, so I blipped the throttle in first to let it grab.
Third run:
1.621 60'
4.776 330'
7.344 @ 97.40
9.541 1000'
11.410 @ 120.96
same tune/boost setting, still dropping from 28 to 24psi. I did the same damn thing in first gear again...letting clutch out too slow, it doesn't feel like it grabs 100% and I lift throttle out of instinct for just a bit. Either way, a decent pass I think.
Saw knock counts of 13-14 in 4th gear, which pulled the timing down to 9*.
air temps were about 93* on the line and hit 121*F in 4th gear:noes:
A/F was still mid to high 11's, but I think I should try a little richer and less timing in the map so it stays off knock all together (or a little squirt of meth).
So I'm pretty happy with an 11.4 @ 121 on pumpgas, park the car and load up my tools, reinstall the headlight. Go to leave and the car wont start. after some investigating: no fuel pressure on gauge.
Check the pump, I have power at the plug. Pull out the sending unit and jumper the pump to the battery: it only turns on after getting whacked with a ratchet and was intermittent.
So supra pump died and left me stranded in the pits waiting for a tow truck. :eek3jerkit:
(Mark's post about friday night just got me too itchy to wait till next weekend!)
Run 1:
1.640 60'
4.939 330'
7.609 @ 93.97 1/8
9.870 1000'
11.800 @ 117.14 1/4
~23psi steady boost, no knock, mid 11's a/f, 13 to 15* timing.
Launch rpm was 6200, but I didn't get on the 2step until the last light so I left with pretty much no boost/free rev. it still came out smooth and fairly quick.
YouTube - GVR4 #139 11.8@117
My wife & kids left after the first run, my boys are only 4 and 2 years old, the big loud racecars were a little too much for them. Island also seems to have a nasty yellow jacket bee problem in the stands. So I only have video of my first run. They waited over 2 hours to see me make one pass, which musta sucked.
Second run:
1.656 60'
4.837 330'
7.418 @ 96.82 1/8
9.626 1000'
11.509 @ 120.21
Boost hit 28psi and start a steady decline to 24psi by 7500rpm.
raised timing 1*, but saw some knock (less than 8counts) in 3rd and 4th.
NLTS all gear shifts, but I let out in first gear right after the launch. I let the clutch slip just a bit too much and it kept slipping after the pedal came up, so I blipped the throttle in first to let it grab.
Third run:
1.621 60'
4.776 330'
7.344 @ 97.40
9.541 1000'
11.410 @ 120.96
same tune/boost setting, still dropping from 28 to 24psi. I did the same damn thing in first gear again...letting clutch out too slow, it doesn't feel like it grabs 100% and I lift throttle out of instinct for just a bit. Either way, a decent pass I think.
Saw knock counts of 13-14 in 4th gear, which pulled the timing down to 9*.
air temps were about 93* on the line and hit 121*F in 4th gear:noes:
A/F was still mid to high 11's, but I think I should try a little richer and less timing in the map so it stays off knock all together (or a little squirt of meth).
So I'm pretty happy with an 11.4 @ 121 on pumpgas, park the car and load up my tools, reinstall the headlight. Go to leave and the car wont start. after some investigating: no fuel pressure on gauge.
Check the pump, I have power at the plug. Pull out the sending unit and jumper the pump to the battery: it only turns on after getting whacked with a ratchet and was intermittent.
So supra pump died and left me stranded in the pits waiting for a tow truck. :eek3jerkit:
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(Mark's post about friday night just got me too itchy to wait till next weekend!)
Those hoosiers will likely end up being the difference between an 11.7 or so that it would be capable of on street tires on a really clean run vs what I hope will end up being a 10.9 assuming a difference of high 1.7 short times on street tires vs low 1.5's on hoosiers. That's more performance than any other single mod you can possibly do to a DSM other than nitrous.
