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Discussion Starter #1
I need some suggestions...

I'm working with stock rear, Spec stg III clutch, and street tires. These tires are nice though in that they get really tacky with a good burn-out (I tested the theory Saturday. They didn't get all slick like my old street tires did when they got too hot, instead they got all squealy and sticky :D.). I ran them at 22lbs pressure...

Saturday's best 60' was a 2.128. That was bogging at a ~3500 slip/dump. I have been slipping until the front starts to rise and then dumping the rest of the clutch. I tried a ~4k launch with a little bit faster slip/dump (but not a side-step) and that caught me some wheelspin and a 2.203 60'

I've heard of folks getting 1.9's and even 1.8's on street tires (not Nittos)...

Any tips?
 
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Reinflate your tires.

Dropping the pressure in a street radial doesn't really help, as there's no sidewall wrinkle to speak of. If you get the pressure too low the tire will cup and you will lose contact patch area.
 

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Discussion Starter #3
ok, I'll try that. I didn't notice much of an improvement after I did it anyway.

Here's my 60's for the day:
1) 2.241 (regular tire pressure @ 32lbs for run 1 and 2. Run 1 had some wheelspin. I accounted this to not heating my tires up enough.)
2) 2.160 (exact same launch as run 1, just with a good burnout. I could hear the tires chirping and squealing when I put the clutch back in to roll to the staging lights :D)
3) 2.128 (this was the first 22lb pressure run, all remaining runs @ 22lbs also)
4) 2.139
5) 2.203 (the first wheelspin on launch with a proper burnout I had all day)
 

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ya i would reinflate the tires to about the 30-32 psi mark since radials arent soft enough and dont have the wrinkle walls to get the most benefit out of deflating your tires to ~20psi
 

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If you haven't already get some Nitto's. Air them down to 18psi and give them a nice 8 second burnout. Depending on your mods you'll have to figure out what RPM to launch at. A Try sidestepping the clutch at 3k.
 

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Chris89gta
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Buy an auto and get sticky tires!!! LOL that will get your 60's down!!!
 

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I was cutting pretty consistent 1.92x-1.93x short times with my bolt on LT1 car and Firehawk SZ50 tires @ Atco a couple years back.

I'd do a good burnout for maybe 10 seconds or so until I felt the tires start to grab. Then once staged, do a quick slip of the clutch from about 3000 RPM. Worked like a charm. You just have to get a really good feel for it.

Funny thing though, when I moved to nitto DR's, I couldn't best a 1.96. :thumbdown
 

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I think something has to click inside your head before you can start pulling good 60's When I started out racing many moons ago I had a problem with it and then all of a sudden it was like.. wow, I can leave this hard and it will go!!!!

I've pulled a few 1.88's on Cooper Cobras and even a few 1.87's in a stock 6 speed LS1 with furtara's (sp?). Of course i've gone 1.7's with drag radials. The car wouldn't do any better with the stock gear.

In a Auto car, I leave just about off idle.. Stalling always hurt mine.. IN a Manual car i like to leave around 4-4.5. No slipping, a quick get out. If your slipping your not going to pull a good 60'.
 
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