Jackass w/ LS9: original build and new Jackass 2.0 updates!

[Stielow]

Originally Posted by RussMurco

I think I have my new computer wallpaper!


I guess my boss has never pushed his Ferrari 599 anywhere near the limits when he goes to the Elkhart Lake Ferrari every summer. That car is roughly 3700lbs with 600+ horsepower so I'm wondering if it would chunk the tires at 9 or 10/10ths too.


Do you think the Rival S tires would improve those numbers, Mark?


Indeed!!!


This makes me wonder, what kind of numbers did Hellfire generate once it was dialed-in?

Tires and tire wear is a tricky subject. First off not all Michelin Super Sports are the same. All of the OE tires are tuned to the car. The 345 I chunked on Hellfire was due to tire over temps due to 100 MPH tire spin. I'm sure Ferrari works with Michelin to tune a specific tire. The Michelin tires on the C7 Corvette are very unique from the off the shelf tires.

On your bosses car, there is big difference batween 9/10 and 10/10 on tire wear and car temps.

Right now on Rival S tires I would say JA 2.0 is faster than Hellfire on the old Rivals. Actually I have data from Waterford that it is. I will know when I get to Gingerman. Most of my data is from Gingerman so it will be a better comparison. On a high lever JA 2.0is 125 lbs heavier than HF. JA 2.0 is up 20 HP over Hellfire so that is a wash. The Rival S is much better than the Rivals so it should be fun to see the lap times.


The graph below show the Rivals (in Red) from OUSCI last year on a 85 degree day on Hellfire. The Blue data is the Rival S on JA 2.0 on Gingerman on a 60 degree day.

The X axis is Lateral Acceleration and the Y axis is Long Acceleration (Friction Circle)



The data is kind of interesting that you can clearly see the max Lat numbers on the Rival S are up about 0.08 to 0.10 G in LH and RH turns. Because it was cold and Waterford is small the acceleration and Decel delta does not show up.

I know once I get the Rival S on a bigger track where I can get some heat in them they will really work well.

Mark

[dontlifttoshift]

What will be on the front for Gingerman?

[Stielow]

Originally Posted by dontlifttoshift

What will be on the front for Gingerman?

I Rival S on all 4 corners.

Mark

[RussMurco]

Originally Posted by Stielow

The data is kind of interesting that you can clearly see the max Lat numbers on the Rival S are up about 0.08 to 0.10 G in LH and RH turns. Because it was cold and Waterford is small the acceleration and Decel delta does not show up.

I know once I get the Rival S on a bigger track where I can get some heat in them they will really work well.
Mark

Informative as always, Mark! Thanks for sharing and I always learn something interesting "looking over your shoulder" with your projects!

[Stielow]

Originally Posted by RussMurco

Informative as always, Mark! Thanks for sharing and I always learn something interesting "looking over your shoulder" with your projects!

In full disclosure right now I have Bridgestone RE-71s 275 on the front and Rivel S 335 on the rear. The car feels very balanced. I finally got the 275 Rival S yesterday so I'll run those this weekend.

Mark

[raustinss]

any chance of you telling us what your "next" project is .... another f body or are you going to jump to something else again ,possibly another chevelle ?

[randy]

Any chance you can tell me what oil to break in my crate ls3 480hp?

Also what fluid are you using on your t56 magnums?

On the ford 9" what fluids are you using? weight, synthetic, non syn, brand etc? Any break in diff fluid either?

[Build-It-Break-it]

Any chance you can tell me what temp to set my barbecue grill at to cook my turkey burgers?

Also what vitamins do you take before each race?

In your cereal what milk do you use? 2 percent? Whole milk? Almond milk? Any chopped up banana with it?

Thanks in advance,
Love Ahmad

[andrewb70]

Originally Posted by Build-It-Break-it

Any chance you can tell me what temp to set my barbecue grill at to cook my turkey burgers?

Also what vitamins do you take before each race?

In your cereal what milk do you use? 2 percent? Whole milk? Almond milk? Any chopped up banana with it?

Thanks in advance,
Love Ahmad

Andrew

[Stielow]

Originally Posted by Build-It-Break-it

Any chance you can tell me what temp to set my barbecue grill at to cook my turkey burgers?

Also what vitamins do you take before each race?

In your cereal what milk do you use? 2 percent? Whole milk? Almond milk? Any chopped up banana with it?

Thanks in advance,
Love Ahmad

I grill stuff at medium heat or until crispy on the outside.

Flinstone chewables vitamans.

2 percent with blue berries.