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Thread: New-To-Me 2002 Corvette. HPDE Questions

  1. #81
    Not Certified Slow SDSUsnowboards's Avatar
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    Quote Originally Posted by bellwilliam View Post
    I think MT90 is a bit too thick. OEM calls for ATF, MTL is thicker than ATF, MT90 is thicker than MTL.

    Let me know how MT90 works.
    So far, on the street, the MT90 feels great. I doubt any problems would manifest on the street though. Get in touch with me on Sunday for track impressions. What are symptoms of it being too thick? Slow dog engagement?

    Quote Originally Posted by fe4 View Post
    What did you do for alignment?
    I asked for maximum negative camber on the fronts, -1 camber in the rear, the lowest castor possible, and 0 toe all around.

    What I got was -0.5 camber in the front, -1 in the rear; and
    zero toe all around; and
    7.6 degrees castor.

    The goal was to make the car lively, namely for street driving, compromising tire wear slightly. I think the factory limitations in front camber will prevent that from being realized. If I had known the front camber would be so limited, I probably would have got toe out in the front. We'll see how it goes this Sunday.
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    Chest hair required Olitho's Avatar
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    I a surprised you could not get -1.5 camber out of the front. It must have a lot of shims on the top a-arm mounts. I would recommend 3/16 total toe in on the rear and 0 or 1/16 toe out on the front for handling.
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    Quote Originally Posted by Olitho View Post
    I a surprised you could not get -1.5 camber out of the front. It must have a lot of shims on the top a-arm mounts. I would recommend 3/16 total toe in on the rear and 0 or 1/16 toe out on the front for handling.
    Sounds like I need to find another place to do my alignments.
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    Quote Originally Posted by SDSUsnowboards View Post
    Sounds like I need to find another place to do my alignments.
    As I recall OEM front camber is -0.7. That is already more than what he got you.
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    Senior Member bellwilliam's Avatar
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    did you lower the car ? I set mine to Spec Corvette specification (rule calls for 4.5"/4.75" jacking rail height).
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    Quote Originally Posted by Olitho View Post
    I a surprised you could not get -1.5 camber out of the front. It must have a lot of shims on the top a-arm mounts. I would recommend 3/16 total toe in on the rear and 0 or 1/16 toe out on the front for handling.
    can the shim be easily removed ?
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    Quote Originally Posted by bellwilliam View Post
    can the shim be easily removed ?
    Yes, that is pretty easy to do.
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    Quote Originally Posted by bellwilliam View Post
    did you lower the car ? I set mine to Spec Corvette specification (rule calls for 4.5"/4.75" jacking rail height).
    The front is lowered as far as it will go without removing the bolt or bushing. About 26 and 1/2 inches from ground to fender. The rear was lowered to about 27 and 3/4 inches from ground to fender. I haven't measured ground to jack points.
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    Gotta get rid of rubber bushings or what camber you almost does not matter.

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    Ughhh. If I go down this path the Corvette will become a race car.

    I'm keeping the rubber everything. I'm returning to the Hankook V12's once I kill the Federal tires. The federals sound like big knobby offroad tires. This is supposed to be a street car! Sure, I'm curious what lap times it will put down. I will drive for lap times on Sunday... just this once. Or twice. I don't even know if I can drive fast in a fast car. The thought of rotating the car off the berm in the last of the esses before Sunset at 120mph makes my palms sweat. I might find I value my life when I have more than 119 wheel horsepower to drive with.
    Last edited by SDSUsnowboards; 01-23-2018 at 02:56 PM.
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    They must've just given you what the computer said to give you. These cars have huge adjustment on factory hardware. I have heard of the old SSR autocross guys getting -3 degrees.

    That's probably the optimal case of:
    * Lowering
    * All shims out
    * subframe centered
    * Fresh bushings/non-bent UCAs

  12. #92
    Senior Member bellwilliam's Avatar
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    Quote Originally Posted by SDSUsnowboards View Post
    Ughhh. If I go down this path the Corvette will become a race car.

    I'm keeping the rubber everything. I'm returning to the Hankook V12's once I kill the Federal tires. The federals sound like big knobby offroad tires. This is supposed to be a street car! Sure, I'm curious what lap times it will put down. I will drive for lap times on Sunday... just this once. Or twice. I don't even know if I can drive fast in a fast car. The thought of rotating the car off the berm in the last of the esses before Sunset at 120mph makes my palms sweat. I might find I value my life when I have more than 119 wheel horsepower to drive with.
    just give in. resistance is futile....

    I've heard all those rubber bushing will get destroyed first time you brake at T3 at ACS... they cook !!
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    Quote Originally Posted by bellwilliam View Post
    just give in. resistance is futile....

    I've heard all those rubber bushing will get destroyed first time you brake at T3 at ACS... they cook !!
    Just avoid ACS entirely, it's not worth the trip unless you're racing.

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    Quote Originally Posted by robburgoon View Post
    Just avoid ACS entirely, it's not worth the trip unless you're racing.
    LA sucks. I kind of want to see what Turn 2 is like when I'm going fast enough to make it a turn. The MR2 was reaching about 126 mph, which felt leisurely, relatively speaking.

    I was watching fe4's Buttonwillow videos last night to get a feel for the Corvette on #13. Those videos got my adrenaline flowing. The LS motor makes sexy noises, and the Corvette is more loose than I was expecting. I haven't hit the track since 2014. I've got butterflies in my stomach. For me, an HPDE still has all of the magic it did the first time, 21 HPDE's ago. But, it's been a while, the Corvette is something new. I almost feel like I'm going out for the first time again. I will cherish this feeling because someday it will be replaced with a feeling of familiarity.
    Last edited by SDSUsnowboards; 01-24-2018 at 12:18 PM.
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    Quote Originally Posted by SDSUsnowboards View Post
    Post #10. $7,900. Were you not logged in?

    Haha, just giving you a hard time. William got a C% z06 around the same time for a good price as well (I wish I saw that!). I say go for it. The car is a performance bargain. I'm expecting under 2:00 at button willow next week, all stock.


    Reading this thread is entertaining watching you go back and forth on how crazy to go with the car. It's a perilous path!
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  16. #96
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    took it to Streets last Saturday. This is first ever track session in this car. still didn't get my line right. It drives just like a big Miata
    Falken 615k is pretty good. lap 1 to lap 8 delta was less than 1/2 second in 70F weather. less than 3/4 second in 80F weather. much better than I thought for a street tire compound
    had some concern over temp, I have Dewitt racing radiator with built in oil cooler. yet I still hit 232F on water temp and 285F on oil temp. surprisingly I didn't get a transmission temp warning light (may be I wasn't looking).
    This week, I've added hood vents and sealing around radiator thing, hopefully this will fix it.

    stock Vette seat sucks !!!!! I was holding on my dear life whole track. Like Oli said, I have a "BOSE" imprint on left side of my leg now...

    Last edited by bellwilliam; 02-08-2018 at 01:17 PM.
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  17. #97
    Not Certified Slow SDSUsnowboards's Avatar
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    Haha. G-force meter.

    I'm thinking of taking the Vette to Streets. I have 2 prepaid trackdays with xtreme speed from 2014.

    I'll probably just get another stock ls1 in it, with an oil pan insert for piece of mind, and an oil cooler.
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  18. #98
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    No temp sensor on the manual trans I think.

  19. #99
    fe4
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    Quote Originally Posted by robburgoon View Post
    No temp sensor on the manual trans I think.
    The Z06 has one. Although not sure if Streets is fast enough to overdo the trans.

    Store « Angelwings Tech for the knee. I wish I bought a set earlier, I really do think I beat my left knee up more than I should have over the years.

    I don't know what I would have done if my LS motor blew the oil pump on the first track day...crazy...

  20. #100
    Senior Member bellwilliam's Avatar
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    Quote Originally Posted by fe4 View Post
    The Z06 has one. Although not sure if Streets is fast enough to overdo the trans.

    Store « Angelwings Tech for the knee. I wish I bought a set earlier, I really do think I beat my left knee up more than I should have over the years.

    .
    I watched your video(fast!!) prior to learn shift point !! your passenger seat also flopped around and you look so uncomfortable in the seat
    I cut up some shipping foam yesterday to help with holding me in the seat.
    Last edited by bellwilliam; 02-08-2018 at 10:44 PM.
    S1 Supermiata - 220whp
    13 Tesla, ma: no engine !!
    17 GT350R
    03 Miata Club Sport
    96 NSX
    06 EVO MR
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    Beck 550 Spyder

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