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Tires spinnin or clutch slipping question

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Old 10-17-2009, 01:19 PM
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rich65
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Default Tires spinnin or clutch slipping question

Put 4.10 gears in and just hit the drag strip and it feels like when i shifted through the gears the tires were spinning alittle each time I shifted. Is this possible or is my clutch slipping?

My tires are Toyo R888 305/35/18... tire pressure was 18 pounds

Car has 30,000 miles; stock clutch; tick clutch master cylinder

60 ft time was 1.8

I do not power shift only shift as fast as I can, lifting my foot off the gas and slamming it back down....

have never been able to spin 3rd and 4th off the street with tire pressure at 36 pounds...........

Is it possible to be spinningthe tires or is my clutch slipping? The guys I went with say there was no way it was spinning in 4th gear.

Any thoughts would be greatly appreciated...

My best time was a 12.37 at 116

01 Z06 mods are american racing headers, Vortex intake, exhaust, tune, and 4.10 gears...
Old 10-17-2009, 02:12 PM
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zeevette
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I'd think the new gears would easily lead to more tire spin, but really, it's pretty easy to tell if your tires have broken loose. The car gets squirrely, and feels different. When the clutch is slipping, the car feels completely normal, but the revs are rising without the acceleration push.
Old 10-17-2009, 02:34 PM
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Oldvetter
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To see if your clutch is slipping, put it in 5th or sixth gear and floor it, if rpms rise without corresponding speed, your clutch is slipping.

My bet, your spinning tires. If your clutch was slipping, you would smell it.

BTW, 36 psi is too much for street, 30 psi cold.
Old 10-17-2009, 02:42 PM
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rich65
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Thanks for the replys guys. I'll lower my tire pressure and already tired the 5th gear thing for slipping and the rmps don't go up fast only how they should. It felt like spinning at the track,was hoping for better times but with the spinning i'm sure that took away my et.The buddies i went with just couldn't believe that i was able to spin that far down the track.
Old 10-17-2009, 02:47 PM
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Phiber Optik
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you should be able to spin 3rd on the street, at least a bark
Old 10-17-2009, 03:14 PM
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Bill Curlee
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With just 390 RWHP & 375 ft/lbs Tq in my 02 ZO6, I was spinning the rear tires in 4th gear on the track at Epping NH. Of course, I was running crappy Perellie P Zeros (horrible tires) and it was fun power shifting but, it not the way to make the quickest time. Yes, you can spin tires in forth gear.

Its pretty nerve racking wiggling the rearend at 117 mph...

Bill
Old 10-17-2009, 03:24 PM
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rich65
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I was really hoping for an 11 second pass.Guess i'll just keep tryin.I'm also not too good at doing the burnout.Glad to hear nobody thinks that it was my clutch just my tires.
Old 10-17-2009, 04:01 PM
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Bill Curlee
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Yea,,,,I really have a problem doing burn outs also:



That's 80 feet of Toyo 315's

Unless you have everything working for you, breaking into the 11s is tough.

Traction
Learn the lights
Reaction time
Traction
HP/TQ
Shift technique and accuracy
Control your Adrenalin
Traction

Been there!

Old 10-17-2009, 04:22 PM
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intoc6s
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My clutch was slipping when i dynoed my car. You could tell by the graph(and my tuner told me immediately after the run). That being said, i drove the car for a couple of months b4 it got to where it was really noticeable. Then it got to where i would hit a hill on the highway in high gear and lose speed while the rpms raised like it was in neutral. Even then, it didn t slip in 1st gear.(that i could notice)

It was my fault for not properly breaking in my clutch.(a $910 mistake) (not counting the time it took to re-install the new clutch)
Old 10-17-2009, 04:25 PM
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07blkvette
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Unless you have everything working for you, breaking into the 11s is tough.

Yea, but when you do it, it feels great!!!!!!!!!!!!!!
Old 10-18-2009, 09:26 AM
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Rob's 73
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18 pounds in R888s seems low to me. I doubt you are getting a good contact patch.
Old 10-18-2009, 09:59 AM
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rich65
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How many lbs should i put them at for the track? Someone said 30lbs for the street.
Old 10-18-2009, 11:04 AM
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i run my street tires nitto 555' s at about 20 psi at the strip...

see if you ever smell the clutch burning at the track, i have clutch issues at the track that i never have on the street....most of them seem to be related to my burnout technique though..
Old 10-18-2009, 03:41 PM
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I worry about getting the sticky clutch syndrome when i do my burnout,so i think thats why i never do a good burnout.I never smelled clutch at the track,i really think my tires were spinning or at least i hope that's what was happening.
Old 10-18-2009, 05:10 PM
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Originally Posted by Bill Curlee
Yea,,,,I really have a problem doing burn outs also:


I saw that live I followed suit after you

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