Quote:
Originally Posted by Payton King
Since you brought up the brakes...are you using the C5/C6 abs unit with calipers sized to match the OEM stuff? Did you have to reprogram the module or can you run it as is?
|
I'm using a C-6 Corvette Z06 ABS module pre-2008. The trick is the factory ABS wheel speed sensors on all four corners and tricking the ABS module to think it is still in a 2007 Corvette and it still connected to all it correct sensors. If you don't get all the sensor correct it will still work but works in a default cal that has lower ABS efficiency. If you don't get the wheel speed sensors and wiring correct the ABS will fault out at very inopportune times. The wheel speed signal error is a hard fault - the system stops working. This is the problem I had 2 years ago. Not all ABS systems and control strategies are created equal. Like the old debate on EFI on if Speed Density, Alpha-N or MAF systems were better. There are different ABS control strategies. So with all that said I mean if you get a 2002 Camaro 3 channel ABS system to work it will not be as good as a C-6 Corvette system. If you just want to keep from locking a tire that is easy. If you want to optimize stopping distance on split Mu (Dry concrete and Ice) that is harder.
Note the new gun drilled (weight savings) Strange axles, revised axle end and new spacers. The steel and aluminum spacers were machined by my buddy Ken Tibor.
Because the production ZR-1 SKF bearings are active wheel sensor I had SKF make me the SKF bearing with passive wheel speed sensors to work with the 2007 Delphi ABS module.
After a lot of debate with Brembo I chose to use the GTR Calipers over the GT Calipers. We had a lot of discussions like "How much HP? We’ll need to call back to Italy and get back to you"
So I went with Brembo's recommendation. Those brakes are not for the weak of heart or wallet. Due to my short development time line I don't have time to do a lot of experimentation with the brakes.
I have worked with the Brembo guys a bunch on other projects and I think this may be a bit over kill but they will work. I did size the system to work with the Delphi ABS system. The brakes on Red Devil worked very well and I just wanted to tweak the system a little to make it better.
With a lot of due care you can get ABS to work on an old hot rod. You just need to keep it happy with the correct sensors to make it work. I want to keep my ABS set up my competitive advantage for a while. Bosch does sell an aftermarket ABS system that is laptop programmable. So it is accessible technology to anyone with the budget or time to sort it out. I look at ABS, Stability Control and Performance Traction Management as the next thing for the aftermarket to crack into. Like EFI was 25 years ago only a few people could do it and few aftermarket company’s make systems and they were expensive. Now EFI is main stream and very easy to do. So I see chassis controls going that way in a few years.
Hey if it was easy everyone would be doing it....
If I can get the car out of paint jail I can start putting it together. (Paul and Joe are doing a great job) You can’t rush this quality of a paint job.
Mark
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
Hybrid Mode
