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

[formula88]

Originally Posted by clill

They are fine without abs for street driving but on the track under hard braking the grip will really ramp up during a hard decel. At Motorstates challenge I locked them up and slid thru the grass. Same turn they started to lock up on Stielow but he was smart enough to take his foot off the pedal. For track use without abs I was going to swap in steel rotors so I wouldn't have the lockup issue.

Kinda like this???

[formula88]

Originally Posted by GregWeld

Did Charlie mention anything about the sharks at the beach to you and Gordon?? Just sayin'......

Sharks?? Nobody said anything about sharks!!

[GregWeld]

Originally Posted by formula88

Sharks?? Nobody said anything about sharks!!

Great pic of the Jackass driving Jackass, Gordon!! I remember him telling us this story at a track event one weekend....

You guys will have a great time drinking Charley's beer. Post up pics of Liz on the beach... LOL

[Swain]

Originally Posted by GregWeld

Did Charlie mention anything about the sharks at the beach to you and Gordon?? Just sayin'......

You need a Camaro imagine how complete you would be. I think your missing that edge Greg. Prolly 2nd gen more your overal size

[Stielow]

I have been working with Paul at C&R and they have helped me design the new radiator and heat. They are the new Denso high efficient cores with a new Spal 850 W fan. I learned a lot from Z/28 program and Hellfire.

C&R nested the coolers for the best performance. The new cores and thinner and the oil coolers are a lighter.

The oil cooler and the power steering cooler is on the drivers side and the trans / diff cooler is on the pass side.

We should have the parts next week. I love working with the C&R guys.

A cool engine is a happy engine....

[Vince@Meanstreets]

It's nice to have a company like C&R that willing to embrace innovation and not just tell you "sorry, just what's on the menu pal".

[andrewb70]

Originally Posted by Stielow

I have been working with Paul at C&R and they have helped me design the new radiator and heat. They are the new Denso high efficient cores with a new Spal 850 W fan. I learned a lot from Z/28 program and Hellfire.

C&R nested the coolers for the best performance. The new cores and thinner and the oil coolers are a lighter.

The oil cooler and the power steering cooler is on the drivers side and the trans / diff cooler is on the pass side.

We should have the parts next week. I love working with the C&R guys.

A cool engine is a happy engine....

Mark,

Do you have more information on this new Spal 850 W fan?

Andrew

[RussMurco]

Originally Posted by clill

They are fine without abs for street driving but on the track under hard braking the grip will really ramp up during a hard decel. At Motorstates challenge I locked them up and slid thru the grass. Same turn they started to lock up on Stielow but he was smart enough to take his foot off the pedal. For track use without abs I was going to swap in steel rotors so I wouldn't have the lockup issue.

Originally Posted by formula88

Kinda like this???

Thanks for the info, Charlie, and thanks for the visual, Gordon!
Is it still on the original set of rotors and pads?

[Stielow]

Originally Posted by RussMurco

Thanks for the info, Charlie, and thanks for the visual, Gordon!
Is it still on the original set of rotors and pads?

Yes it still has the pads and rotors it was built with in 2008. The Carbon Brakes wear great when you’re not always beating the crap out of them. So far I have used up half the pads on Hellfire. But that car has had around 3 hours of very hard track miles. On the Z/28 we can go 5 tank fulls of fuel on track before we need pads. (We test tank of fuel at work fill the tank and go flat out until it is empty - about 42 minutes in a Z/28) The rotors will last for about 30 pads changes.

On Hellfire I used the Corvette ZR-1 brake booster and master. There is a Bosch booster is tuned for the ZR-1 (Look it up in Service Parts). I like the brake feel of the OE booster and master. I have also failed many aftermarket booster.

The Carbon Brakes will work fine without ABS. They work a lot better with ABS. I have the Bosch ABS system and I know of a Conti and Dephi system that will work also. The Bosch system is their motorsports system and is very expensive, but gives you a laptop interface and works flawlessly with the Brembo CCM brakes. The Conti race system is available but still not adjustable (One guy had it at the OUSCI this year). The Dephi system is very limited and not commercially available.

Because the Bosch system is designed for racing I never had a drop out on Hellfire. Once it was working it worked. I'm so confident in the Bosch sytem that on JA2.0 I plan on running it and not installing a prop valve as a fail safe. On my other cars I set the base brakes with a prop valve then turned on the ABS. I don't feel I need to do that.

Mark

[RussMurco]

Originally Posted by Stielow

Yes it still has the pads and rotors it was built with in 2008. The Carbon Brakes wear great when you’re not always beating the crap out of them. So far I have used up half the pads on Hellfire. But that car has had around 3 hours of very hard track miles. On the Z/28 we can go 5 tank fulls of fuel on track before we need pads. (We test tank of fuel at work fill the tank and go flat out until it is empty - about 42 minutes in a Z/28) The rotors will last for about 30 pads changes.

On Hellfire I used the Corvette ZR-1 brake booster and master. There is a Bosch booster is tuned for the ZR-1 (Look it up in Service Parts). I like the brake feel of the OE booster and master. I have also failed many aftermarket booster.

The Carbon Brakes will work fine without ABS. They work a lot better with ABS. I have the Bosch ABS system and I know of a Conti and Dephi system that will work also. The Bosch system is their motorsports system and is very expensive, but gives you a laptop interface and works flawlessly with the Brembo CCM brakes. The Conti race system is available but still not adjustable (One guy had it at the OUSCI this year). The Dephi system is very limited and not commercially available.

Because the Bosch system is designed for racing I never had a drop out on Hellfire. Once it was working it worked. I'm so confident in the Bosch sytem that on JA2.0 I plan on running it and not installing a prop valve as a fail safe. On my other cars I set the base brakes with a prop valve then turned on the ABS. I don't feel I need to do that.

Mark

Thanks for the input, Mark. The only really trick stuff that will be on my car will be the ZR1 brake system so I was a little worried when I read about the grabbing at speed. Mine will be a 99.999% street car so I think I'll skip the Bosch ABS (the cost of the ZR1 brakes was already sobering), at least for now.
Thanks for the input on the master cylinder/booster too, I have the standard J56 booster but will be ordering the J57 piece today.
You've been an enormous source of proven information and it is much appreciated!!!