Mark Stielow's 69 Camaro, Red Devil

[Stielow]

Originally Posted by preston

What was wrong with the rack ?

I never did read any real details on how you implemented ABS. Is it a straight vette setup ? Did you have to "reprogram" it ? if so, how did you interface it ? What is the path for more people adopting ABS into these cars ?

The rack was a remanufactured part that had a defect in it. It looked liked it had been clamped in a vise at some point due to the marks on it. It developed a 2 inch long crack right in the middle of the vise marks. I installed a new rack that looks like it was deburred and have had no issues.

The ABS unit is a 2006 Corvette Z06 unit. I used the Z06 unit because it has the right calibration to match the Brembo calipers I'm runninG. Same piston volume as the PBR calibers.

The hardest things I had to were:

Getting passive rear wheel speed sensors in the Ford 9" with the correct number of teeth to get the pulses per rev correct. I ended up using 2004 Mustang wheel speed sensor and 2006 Mustang tone rings. I have a ton of time in making the backing plates to get the wheel speed sensor, park brake and the caliper to all fit up robustly. The front wheel speed sensors are production C-6 Corvette on the DSE front clip.

Building all the brake hardlines. I have about 40 feet of S/S brake line in my car. I purchased a hydraulic flaring tool to get all the flares right. For the inverted flares and the metric flares.

Building the wiring harness so it is not susceptible to EMF or noise. Routing it in the car to keep it away from heat and is durable.

Of the things that I did on the car ABS brakes was the hardest because it was the first time I tried it. I still have a prop valve in the system so if it faults out I will not have too much rear bias.

I got the system to work by tricking it to think it was installed in 2006 Corvette. Due to the fact I have a stock C-6 ECM in the car I hooked the CAN data stream up between the two. The other sensors were faked or installed.

Mark

[camcojb]

Originally Posted by Stielow

The rack was a remanufactured part that had a defect in it. It looked liked it had been clamped in a vise at some point due to the marks on it. It developed a 2 inch long crack right in the middle of the vise marks. I installed a new rack that looks like it was deburred and have had no issues.

The ABS unit is a 2006 Corvette Z06 unit. I used the Z06 unit because it has the right calibration to match the Brembo calipers I'm runninG. Same piston volume as the PBR calibers.

The hardest things I had to were:

Getting passive rear wheel speed sensors in the Ford 9" with the correct number of teeth to get the pulses per rev correct. I ended up using 2004 Mustang wheel speed sensor and 2006 Mustang tone rings. I have a ton of time in making the backing plates to get the wheel speed sensor, park brake and the caliper to all fit up robustly. The front wheel speed sensors are production C-6 Corvette on the DSE front clip.

Building all the brake hardlines. I have about 40 feet of S/S brake line in my car. I purchased a hydraulic flaring tool to get all the flares right. For the inverted flares and the metric flares.

Building the wiring harness so it is not susceptible to EMF or noise. Routing it in the car to keep it away from heat and is durable.

Of the things that I did on the car ABS brakes was the hardest because it was the first time I tried it. I still have a prop valve in the system so if it faults out I will not have too much rear bias.

I got the system to work by tricking it to think it was installed in 2006 Corvette. Due to the fact I have a stock C-6 ECM in the car I hooked the CAN data stream up between the two. The other sensors were faked or installed.

Mark

in other words, being a GM suspension engineer helps a ton....................

Jody

[Stielow]

Originally Posted by camcojb

in other words, being a GM suspension engineer helps a ton....................

Jody

And being and to read a wiring diagrams.....We also built the engine harness from scratch. Lots or wires. My buddied Ryan Kuhlenbeck wired the whole car and built all of the harness. He had about 200 hours in just wiring the car and making the harnesses.

[coolwelder62]

WOW!! Mark

[JohnC]

Originally Posted by Stielow

And being and to read a wiring diagrams.....We also built the engine harness from scratch. Lots or wires. My buddied Ryan Kuhlenbeck wired the whole car and built all of the harness. He had about 200 hours in just wiring the car and making the harnesses.

Ryan is a great (and smart) guy. Glad to meet him.

[fleetus macmullitz]

Congrats Mark on all the progress so far on the ABS.

Maybe a mini build book devoted just to making ABS work on these old cars?

[tones2SS]

Nice work Mark!

[57hemicuda]

Good seeing you at VIR, sounds like your pretty sure the rack was given the squeeze in the vise causing its failure. Did you end up changing the mounts at all? Cheeses you off that your weekend got cut short by no fault of your own.

I never realized how much flex these cars go through, until VIR. The apexes on the S turns at 120mph, tires left the ground on more then one occasion. Fun weekend. Ron

[parsonsj]

That response about the ABS was helpful. Thanks!

jp

[Stuart Adams]

Originally Posted by Stielow

Well, I have a dilemma. This weekend I can take my car to Gingerman Raceway to a Ferrari Club track event and kick sand in the face of some uber Euro cars and eat brie and drink wine. Or I can go to Detroit and do an AutoX in a parking lot on Belle Isle (they find a few dead bodies on Belle Isle every year). Hmmm.

Ferraris, wine & cheese OR gunfire, grumpy SCCA people while standing in the sun shagging cones…..such a tough decision.

Well, due to the fact that the AutoX counts as the same amount of points at Optima as the road race portion, I need to go sort out my car for AutoX. “Honey where did I put my Glock and my AutoX tires”?

Since the Wal-Mart went to 24 hours I can’t practice there anymore.

Oh well, could be fun. I moved my speed limiter up to 60 mph because they said it would be a “fast” one.

I have been beating on my car a bit. After the VIR deal I got the rack fixed and the ABS working. The car hauls now.

We did Woodward Dream Cruise. Fun doing 3rd gear burnouts on Woodward.

Looking forward to the LS Fest in Bowling Green, KY and then SEMA and the Optima Shoot out.

My only problem with the car is I have to wash and polish it all the time because the paint and body work is so nice…. I blame Paul and Joe… Thanks guys everyone loves the paint.

Stielow

Looking forward to Pahrump. Joe does awesome work.