BUILD THREAD 86 GP 2+2~Blown 6.0

If you're 11 seconds off of the fast guys shocks aren't going to save you. I think there may be some brakes, tires, alignment, and suspension you are severely lacking in. I suspect you don't know what you're missing, but if you felt it in someone else's car it'd click. That said, autox'ing one of these is an uphill battle. That said, you could still find half of that gap fairly simply I suspect.

90% it's user error. He just needs more dedicated seat time to get your confidence up.
 
I shouldn't have been so hard on myself.

People that have a car that's set up for autocross and a driver that knows what they are doing run 42-44. Even c5 z06 with a semi knowledgeable driver ran a best of 48. It seems like nobody ran 44-48. Lots of 49-57 second cars. The fastest muscle car era car that doesn't have a pro driver I saw ran 49 with a lot of seat time. Z51 c6 stock with a driver that had a lot of seat time ran a best of 51.

So mid 53's with a yacht with to much power and a moron behind the wheel is good with me.
 
I shouldn't have been so hard on myself.

People that have a car that's set up for autocross and a driver that knows what they are doing run 42-44. Even c5 z06 with a semi knowledgeable driver ran a best of 48. It seems like nobody ran 44-48. Lots of 49-57 second cars. The fastest muscle car era car that doesn't have a pro driver I saw ran 49 with a lot of seat time. Z51 c6 stock with a driver that had a lot of seat time ran a best of 51.

So mid 53's with a yacht with to much power and a moron behind the wheel is good with me.

As long as you are having fun the rest is gravy.
 
I'm no auto x'er, but dang, it looks like the launch and the initial turn you could've knocked a 1 second off.

Was the car pushing anywhere?

And damn, that looks like fun! The car sounds good too. Were you hitting the rev limiter on the last pull?
 
I'm no auto x'er, but dang, it looks like the launch and the initial turn you could've knocked a 1 second off.

Was the car pushing anywhere?

And damn, that looks like fun! The car sounds good too. Were you hitting the rev limiter on the last pull?

Yeah, looking back I should have hit the front 1/3 of the track harder. I kinda built up confidence after the half way mark. but was a bit lazy on the first bit.

The car does push on really sharp hairpins, which there was 3. Last year I don't remember any hairpins so going from 0 to 3 was an adjustment. Otherwise It wasn't that terrible, which means I need to give it more speed. I learned a lot reviewing my GoPro video from Saturday. I wish I could have run Sunday and implemented my improvements but it's tough to get spots.

I did have a good time, It's worth doing at least once a year. A TON of people build much more serious pro-touring style builds with the full big brake, control arm & coilover/shock catalog and never turn a corner. It's a goodtime actually using the suspension stuff I've done.

And yes, I hit the rev limiter on the last straightaway on all 4 runs. I ran in 1st gear through the 1st hair pin and shifted to 2nd about half way through the 1st loop. The car has the power to haze the tires in 3rd on street tires so in 2nd gear it's essentially at-will tire demolition from anything above 4000 rpm. I was advised to run in 2nd last year as it makes the car a bit more stable, especially with the power I have. The higher gear makes the car less 'lurchy' when you make quick on/off throttle movements.


Oh and a few other photos
Guy down the block from me has a beautiful 69 T/A. I had no idea 1st gen T/A's were as rare as they are (under 700)
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Oh. My.
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Someone in AU is pissed this is in the US lol
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1.5 Gen F body. 2nd gen back half, 1st gen front, tons of fab, billet & work.
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Opel GT with a 3500 GM
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Light blue formula. Yes please
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I'm guessing it's prone to understeer with a neutral throttle condition? You can fix that by being on either the throttle or the brakes if you can force that into being an option. And I don't mean all the throttle or brakes, just enough.

Yeah it understeered hard on my 2nd pass when I was coasting/light brake into the last hairpin when I slaughtered the couple cones. It didn't understeer the other 3 times in that last turn but did squeal hard on my last pass (the mid 53 second one) which was the fastest.

I know hard brake+turn at the same time is bad and you it's better to mid throttle+turn, but I'm not read up on pedal vs steering concepts.

Honestly the best path forward would be sticking a good driver in the drivers seat to know what the car can do, and then coach me on the best way to improve.
 
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Yeah it understeered hard on my 2nd pass when I was coasting/light brake into the last hairpin when I slaughtered the couple cones. It didn't understeer the other 3 times in that last turn but did squeal hard on my last pass (the mid 53 second one) which was the fastest.

I know hard brake+turn at the same time is bad and you it's better to mid throttle+turn, but I'm not read up on pedal vs steering concepts.

Honestly the best path forward would be sticking a good driver in the drivers seat to know what the car can do, and then coach me on the best way to improve.

Think of it this way: the steering wheel and gas/brake are connected by a string. If you're giving the car 100% of one thing and you want to add another thing, you'll have to give up some of that first thing. So when the wheel is turned and you want to give it gas, you need to unwind the wheel a corresponding amount. If you can do both without unwinding the wheel, you were going to slow to begin with and weren't at the limit of anything. Same with brakes and steering.
 
Yeah it understeered hard on my 2nd pass when I was coasting/light brake into the last hairpin when I slaughtered the couple cones. It didn't understeer the other 3 times in that last turn but did squeal hard on my last pass (the mid 53 second one) which was the fastest.

I know hard brake+turn at the same time is bad and you it's better to mid throttle+turn, but I'm not read up on pedal vs steering concepts.

Honestly the best path forward would be sticking a good driver in the drivers seat to know what the car can do, and then coach me on the best way to improve.

Do you have any experience with trail braking?

And have you read this?
 

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