I haven't really made any posts lately on what I have been doing with the turbo camaro so here is an update.

I went to the track a few weeks ago with the intention of seeing how slow I could make the Camaro run. I know that sounds odd but keep reading. I needed to get a bearing for the az fastest street cars shootout as I plan on running true street which is a 10.0 index @ 135 mph. The part that concerns me is the 135 trap limit as the car just feels like a monster with the auto in it and limiting the ET is pretty easy. I will not put a full cage in the car with a chute for now so it's time to slow it down and go have some fun with it in a class that it qualifies for.

I turned the boost down as low as it will go (10 psi with some creep up top), running on 91 octane with a whopping 11-12 deg of timing, running my street Fikse wheel/tire setup, passenger seat still in the car, etc. I went out and made a quick pass and got on the brakes at the end just as a shakedown to see how the auto responded. First thing I learned is that to make this thing 60' I really need to use the transbrake. The converter is setup for a brake launch with high boost so this was no suprise that it was a slouch just wacking the throttle out of the hole. Second pass I decided to just run it out full and see what happened. Launched the same with a killer 2.1 60' and ran it out to a 10.9 @ 135.

sh*t.

I know it's funny saying that and running a 10 second pass @ 135 but I have to slow it down. Launching on the brake and even cutting a mild (for a brake launch) 1.7 60' is going to put it in the low 10s and the mph will go up for sure as well. I needed to put on a bigger wastegate and try to limit the boost more. The little Turbonetics 45mm racegate that comes with the TTI race kit is giving it's all trying to hold it down... so I really needed to put a bigger one on there. Enter the 60mm Tial wastegate. I went the quick and dirty route of expanding the existing pipe that comes from the Y of the TTi kit since I was thinking that it wasn't the size of the pipe going to it that was causing the problem, it was the wastegate just not flowing enough. Sure enough the car can hold it down to 8 psi and not creep one bit so mission accomplished. I need to wire up the transbrake next and take it back out and see what happens. Hopefully I can get out there in a week or two and see what happens. Time just isn't on my side lately.

 

dang thats a big valve

when i had my roll bar i was often kicked based on ET but never for MPH. is that written out somewhere for the class you are looking at specifically?

also you dont have to get a chute till 150, i still dont have one and havent been harassed about that yet either.

 

Dang, must be tough forcing yourself to 'slow it down'!

I may be in the same boat as you using this tial 38mm this kit came with and a .5 bar spring and it wanting to creep. 60mm is a big monster though man jeez

Is it an IHRA or NHRA track? I think the rules are different for each as far as what you can get away with to a 10.0 and a limit on MPH

 

AZ tracks are completely different than some of the other tracks I have been to out of state. Here they are VERY strict with rules and I get checked for all of the safety equipment everytime you go to the track to race. But yes, it's specifically written for the class I am racing in that you can go no faster than 10.0 @ 135. That doesn't mean that at the end of the night I won't be making a bonzai pass.


It's an NHRA track and they are just strict. Plus it's rules for the class, not just track rules.

 

Good luck with the car, true the tracks are strict out here. After you tuned my car I was going to run it but I knew they would kick me out for the rollbar rule. Didnt want to deal with the drama.

 

Trying to go slower, LOL, only if I had your problems, LOL

 

damn that gate is huge!!!

 

NHRA new 2008 rule is 10.99 or 135 needs a full cage.... alot of tracks just let some guys slide with a bar...

 

Actually read that section again. Full bodied cars with unmodified firewalls don't need a cage till 9.99.

Ryan K.

 

Phew! I read that previous 10.99 post and was about to get pissed! Our tracks here aren't that strict until you're running single digits.

 

Many of the NHRA rules are in place for $afety reasons. Because there is a HUGE difference between running a 10.1 and a 9.9. For the 9.9 you need to fill the coffers.

 

It is 9.99 on some classes or 135mph a cage is needed... there is also talk about 2009 a t-top rule.....

 

Where's the link to the rules? I'm in CA, have a C5 convertible and tuning isn't done yet but so far we're seeing 735rwTQ. I'd like to make a run on the Sacramento track and would like to know how easy of a launch to make, and what MPH to keep it under.

 

Need a 6pt bar for 11.99 and faster, and 10 pt for 9.99 and faster.

If you are TH400 Nic, maybe you can try short shifting and dropping your mph. But you'll need to experiment. You can add weight too. Should be hard to slow the car down.

 

Verts are 13.49 need a bar and 12.0/11.49 need a cage

 

Thanks, I've avoided a bar since I don't want my skull split open in a rear-end collision on the street. Maybe verts aren't meant to be on a track.

 

taking a risk either way

 

Yup, but on the street the chances are much higher that you'll get smacked on the rear bumper.

I do admit I saw two rolls on one day, a truck that drove up a telephone guy wire and rolled over, and a rolled car that had hit a freeway divide. That's when I started checking out rollbars and crash test dummy videos.

 

I've tried to explain to track officials how a roll bar/cage makes a street car more dangerous, they thought I was crazy. After all, you can't drive a 9 sec or 10 sec car on the street.

 

A cage is very bad for a street car.. i will be driving my starquest on the street and with the funnycar cage i say i might just have to wear a skully!! sounds stupid but just a pot hole could knock ya out!!! ouch safety first!!! and i dont care how stupid i look LOL