brt and Zfat at Thunderhill

[Zfatuated]

Originally Posted by Norm Peterson

Do you think you might have lifted or even breathed off the throttle any? The car is probably too stiffly sprung to see anything like that in the video.

Norm

The opposite, it was matted.

1. Missed apex
2. Early apex
3. Matted throttle
4. 5 additional degress of steering input
5. Painted white line on track edge

Off-line + String Theory = Result

[CamaroTom]

A couple turns before the spin, you were hard on the brakes then turned the wheel abruptly into the corner. A more fluid line through the corners would have helped. A boss 302 on my bumper would sure get my adrenaline pumping though. Glad the car is ok. Didn't know it was you or I wouldn't have posted vid in other thread, looks like it got deleted.

[Zfatuated]

Originally Posted by 1LEMayhem

A couple turns before the spin, you were hard on the brakes then turned the wheel abruptly into the corner. A more fluid line through the corners would have helped. A boss 302 on my bumper would sure get my adrenaline pumping though. Glad the car is ok. Didn't know it was you or I wouldn't have posted vid in other thread, looks like it got deleted.

I was desperately trying to heel/toe which resulted in the jerkiness. You try and be smooth on corner set-up when moving your feet like a monkey. I'm normally very smooove. SRPracing pedals order a couple days ago, that'll fix that sh*t.

[backtotintops]

I ordered just the srp gas pedal. Do you know if the accelerator assembly can easily be removed to install the pedal on the bench?

[Zfatuated]

Originally Posted by backtotintops

I ordered just the srp gas pedal. Do you know if the accelerator assembly can easily be removed to install the pedal on the bench?

I don't know but that sure would be nice eh? Hope so. Sucks laying in the foot well to install pedals.

I just ordered a CG Lock for the lapbelt as well. Next track day is going to be a whole different ballgame

[Q'smuscle]

Wow! Crazy spin out! It look like you could have put some distance if you wanted too ! Nice run!

[Skylane765]

Originally Posted by Nor Cal ZL1

Z, Check out the pedals in this link.
http://www.srpracing.com/pd_camaro_2...ing_pedals.cfm

I will probably install just the accelerator pedal in the ZL. Curious to know if these would work for you also. Wish we had checked the pedal layout between cars while I was there. Sorry to hear about your off, but it does not sound like too much happened. For not feeling well you looked pretty good out there, and it was crazy hot.

There is another member who has a ZL1 and Z28 here on the forums. He should be able to tell you if these pedals would work on the Z28. I'll edit in his user name. Nice to meet you and Brt, Next time I won't miss sign up.

Edit user is Skylane765

Peddles are the same ZL1 and Z28

[All-American ZL1]

Originally Posted by brt3

Oil temps of 275 to 285 degrees. I spiked higher when I was trying to run the A/C and hold revs in a couple of places on track. Shifting up earlier made that go away.

Coolant temps of 240 to to 250 degrees, if memory serves.

Brakes? No problem whatsoever.

Tires? Controlling pressures was very difficult. I believe track temps were over 150 degrees. How hot was it? The new pavement started coming apart in several areas.

Essentially, the track broke before the Z/28 did...

What are you guys using as you temperature limit, I've heard a lot of people say that we should pit and cool down when we get to oil temps of 275?

[Zfatuated]

Originally Posted by All-American ZL1

What are you guys using as you temperature limit, I've heard a lot of people say that we should pit and cool down when we get to oil temps of 275?

I'm in the process of seeking some facts on this issue from people who know (engineers) and will relay those when I get them. I am not aware of a fact-based, engineering determined max oil temp number, and I'm not interested in anon posters or journaist's WAG's. Mobil1 is stable and fully protects up to 400f.

The engine's sensors and ECU will trigger coolant/oil overtemp warnings if harmful temps are encountered (personally haven't seen them). That's what I am currently using as my "temperture limit", whatever is programmed into the ECU. If someone has the capability to determine what numbers are programmed into the ECU that would be valuable and interesting factual information.

Warming up and cooling down the engine is just as important, if not more so, from an engine wear and damage standpoint as a max observed oil temp.

[Norm Peterson]

I'm looking into Aeroforce Technology's "Interceptor" gauges for a couple other track related reasons, and it looks like for many GM cars they can read the same oil temperatures that GM's PCM uses.

http://aeroforcetech.com/index.html


Norm

[brt3]

Originally Posted by Norm Peterson

I'm looking into Aeroforce Technology's "Interceptor" gauges for a couple other track related reasons, and it looks like for many GM cars they can read the same oil temperatures that GM's PCM uses.

http://aeroforcetech.com/index.html

Norm

These look interesting; do you have any more thoughts about which gauges and where you'd mount them?

[brt3]

Originally Posted by All-American ZL1

What are you guys using as you temperature limit, I've heard a lot of people say that we should pit and cool down when we get to oil temps of 275?

I'd like to hear some expert input on this from anyone on the Z/28 team. Based on my experience you don't need to pit and cool down the Z/28. You may want to change your driving style if you hit 285, but based on my experience at T'hill in 106-degree temps, even then you're probably fine.

That doesn't mean pull into the pits and shut her down. After the afternoon sessions, I always did some cool down driving on the access roads and skidpad, just to be sure. I may enjoy my cars on track, but I also treat them right.

Which begs the question -- there has to be something in the software that will dial down the fun if the ECU believes that temps have risen too high? This seems to be standard for every manufacturer these days. I've driven plenty of cars advertised as being track ready. Many of these cars have issues with turning tail and going into limp-home mode once the going gets tough. The Z/28 never once, in two days of running in daytime highs from 104 to 106 degrees, cried Uncle...

[90503]

...I'm no expert, for sure, but I'm going with the coolant temp theory....That is, if your coolant is within range, no overheating, your oil temp will likely be ok....

...Most cars don't have an oil temp gauge, anyhow....No gauge, No worries!....lol.....

[Zfatuated]

Originally Posted by brt3

Which begs the question -- there has to be something in the software that will dial down the fun if the ECU believes that temps have risen too high?

A fine gentleman advised me that 316f triggers the oil temp overheat warning on the DIC asking you to idle the engine to cool it.

I've been reminded and will remind other readers- Install Mobil1 or other high-quality synthetic 15w-50 weight engine oil if you are going to be tracking in the summer.

The heavier oil provides critical additional protection at the higher temps.

You must remove the rain guard from under the hood and dilute the coolant. All per owners manual spec.

Originally Posted by 90503

...I'm no expert, for sure, but I'm going with the coolant temp theory....That is, if your coolant is within range, no overheating, your oil temp will likely be ok....

...Most cars don't have an oil temp gauge, anyhow....No gauge, No worries!....lol.....

I am agreeing with you on this.