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Went to track the other day need advise

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Old 03-11-2010, 11:31 AM
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209Z33
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Default Went to track the other day need advise

Went to sacramento raceway the other day and this is my second time there with my z. Before i had just cai n exhaust. My newer mod now on my car are flywheel, 4.087 gear, test pipe, and 5/16 spacer. My Z is 2003 Touring 6spd. Track condition: temp threw out the day was 54/45 and it rain little bit night before.

Advise i basically need what can i do stop/reduced some wheel hop on my car b/c it was just wheel hopping like it was going out of fashion

Here my four best times: (ran 6 times)





Here some video:
13.6 http://www.youtube.com/watch?v=0SXW6...eature=channel

13.7 http://www.youtube.com/watch?v=_89ng...eature=channel

13.9 http://www.youtube.com/watch?v=mxqWn...eature=channel

Last edited by 209Z33; 03-11-2010 at 11:32 AM.
Old 03-11-2010, 01:00 PM
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scotts300
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13.5@106 is impressive, and that backs up your runs from your first time out at Sac (and your pick-up of 24mph in the back 1/2): https://my350z.com/forum/drag/468142...g-strip-3.html

And that's with your new gears requiring a shift into 5th gear! You really should come down for the dyno day at ZCG. We can do our friendly run that day as well.

Any interest in joining us at Sears Point / Infineon Raceway on 4/7? I posted up the event in the NorCal section here: https://my350z.com/forum/northern-ca...g-radials.html

It would be an interesting comparison to your runs at Sac. Plus you could be a good bracket racer if you leave the line about a quarter second earlier. My best (1 visit, 4 runs) at Sears in my 350 is 13.7@100, though my 300 typically runs faster at Sac as well.
Old 03-11-2010, 01:30 PM
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Originally Posted by scotts300
And that's with your new gears requiring a shift into 5th gear!
NOTE: Looks like you are crossing finish line in 5th gear. This is a disadvantage of increasing final driver ratio. You added another shift. Instead of crossing the finish line at the top of 4th gear, you are crossing at the bottom of 5th. Not good for ET.

Racers will often increase tire diameter with increase final drive ratio. This may avoid an unnecessary shift.
Old 03-11-2010, 01:31 PM
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209Z33
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Originally Posted by scotts300
13.5@106 is impressive, and that backs up your runs from your first time out at Sac (and your pick-up of 24mph in the back 1/2): https://my350z.com/forum/drag/468142...g-strip-3.html

And that's with your new gears requiring a shift into 5th gear! You really should come down for the dyno day at ZCG. We can do our friendly run that day as well.

.
I like come out their on the dyno day zcg but have drill that weekend so yah

Hope goto sac again this summer when it warm up little more so hopefully asphalt would bit warmer hook up little better then this time. Shooting for 13.3 think that would be possible?
Old 03-11-2010, 01:33 PM
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209Z33
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Originally Posted by davidv
NOTE: Looks like you are crossing finish line in 5th gear. This is a disadvantage of increasing final driver ratio. You added another shift. Instead of crossing the finish line at the top of 4th gear, you are crossing at the bottom of 5th. Not good for ET.

Racers will often increase tire diameter with increase final drive ratio. This may avoid an unnecessary shift.
Hoping to raise my rev limit so finish top of 4th
Old 03-11-2010, 01:48 PM
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tire pressure and suspension setup?
Old 03-11-2010, 01:56 PM
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209Z33
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18psi in the rear and 40psi in front Stock suspension except for tein s spring
Old 03-11-2010, 02:00 PM
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Originally Posted by 209Z33
Hoping to raise my rev limit so finish top of 4th
Opps I forgot that idea. May work. Good luck.
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