Road Racing: Nasa Rules And Preparation Specs

[Slow old poop]

I have the n/a 3000gt brakes on the front of my car, I can't say for sure about the VR-4 brakes. Mine were a direct bolt-up.

Holy mackeral! That makes the conversion ultra simple, then.

With 3000GTs, the conversion path for 1st gens (91-93) are to the bolt-on 2nd gen (94-99) brakes, which have almost the same 4-piston caliper but bigger rotors, requiring the bigger-offset 2nd gen wheels. The upgrade path from there (for me, anyway) was Porsche Big Red calipers (which reguire a simple conversion bracket) and stock rotors, then to the same calipers with 13.5 in. Coleman two-piece rotors (which required a slightly taller conversion bracket). It was all bolt-on stuff.

This means that DSM racers have an upgrade path that does not require Stoptechs or any other ultra-expensive conversion. This can be especially beneficial to budget racers, because 1st gen 3000GT brakes would probably do the job just fine, should be available at junkyards, and don't require the bigger offset wheel. From there, the same upgrade path exists to a truly monster braking system.

How do they work for you? Do they stop your car without fade?

Rich

 

[Zero Bar]

Holy mackeral! That makes the conversion ultra simple, then.

With 3000GTs, the conversion path for 1st gens (91-93) are to the bolt-on 2nd gen (94-99) brakes, which have almost the same 4-piston caliper but bigger rotors, requiring the bigger-offset 2nd gen wheels. The upgrade path from there (for me, anyway) was Porsche Big Red calipers (which reguire a simple conversion bracket) and stock rotors, then to the same calipers with 13.5 in. Coleman two-piece rotors (which required a slightly taller conversion bracket). It was all bolt-on stuff.

This means that DSM racers have an upgrade path that does not require Stoptechs or any other ultra-expensive conversion. This can be especially beneficial to budget racers, because 1st gen 3000GT brakes would probably do the job just fine, should be available at junkyards, and don't require the bigger offset wheel. From there, the same upgrade path exists to a truly monster braking system.

How do they work for you? Do they stop your car without fade?

Rich

I havn't had the car on the track yet with them, but just coming from my previous Laser with stock calipers it's a good deal stronger then the single piston. I've done a little spirited driving and had no problem even from freeway speeds, and this is with cheap rotors and pads! I can't wait to get Porterfield's and Power Slots on! They fit perfectly under the stock wheels so no need to upgrade wheels. Pedal feels good too even with the stock master cylinder. The true test will be on the track, but the previous owner had no problem raod racing it with the current setup. From what I'm told you need a bracket to make the VR-4 brakes fit??

 

[mavisky]

FYI, the na 3kgt brakes are identical to the 93-94 awd brakes. I've got the stock dual piston awd brakes on mine too. The issue that I know of revolves around the required offset to fit the rotors and calipers from the 3kgt vr4. I know a member on here has bolted them on but it wasn't a cakewalk procedure.

Another cheap upgrade I've seen was the 4 piston calipers and 13" rotors from a 97-ish ford cobra. It only needed a custom spacer for the rotor and caliper relocation bracket.

 

[Slow old poop]

I havn't had the car on the track yet with them, but just coming from my previous Laser with stock calipers it's a good deal stronger then the single piston. I've done a little spirited driving and had no problem even from freeway speeds, and this is with cheap rotors and pads! I can't wait to get Porterfield's and Power Slots on! They fit perfectly under the stock wheels so no need to upgrade wheels. Pedal feels good too even with the stock master cylinder. The true test will be on the track, but the previous owner had no problem raod racing it with the current setup. From what I'm told you need a bracket to make the VR-4 brakes fit??

Eeek! No, no, no!!! on the PowerSlops. They are perfect for cruising the boulevard and impressing the rubes, but never, never, never put PowerSlops on a race car!

I broke two of them at the hat. Sumbitches broke in half under braking, and I was dang lucky to survive the subsequent loss of braking. A couple of years ago, Stillens and PowerSlots were apparently buying from the same company, because there were a rash of broken rotors out there (see photo of a broken Stillen in my (ROAD RACING: Strange ideas for this winter's rebuild ) thread (I don't know how to use the same photo twice); mine broke the same way.

Porterfields are fine. Ran 'em for years.

Rich

 

[Zero Bar]

Eeek! No, no, no!!! on the PowerSlops. They are perfect for cruising the boulevard and impressing the rubes, but never, never, never put PowerSlops on a race car!

I broke two of them at the hat. Sumbitches broke in half under braking, and I was dang lucky to survive the subsequent loss of braking. A couple of years ago, Stillens and PowerSlots were apparently buying from the same company, because there were a rash of broken rotors out there (see photo of a broken Stillen in my (ROAD RACING: Strange ideas for this winter's rebuild ) thread (I don't know how to use the same photo twice); mine broke the same way.

Porterfields are fine. Ran 'em for years.

Rich

I've had no previous problems with the Power Slots, but I've never road raced before. I planned on the VR-4 conversion by the time I start actually racing on the road courses, for autox and the street the slots will do fine.

 

[Zero Bar]

FYI, the na 3kgt brakes are identical to the 93-94 awd brakes. I've got the stock dual piston awd brakes on mine too. The issue that I know of revolves around the required offset to fit the rotors and calipers from the 3kgt vr4. I know a member on here has bolted them on but it wasn't a cakewalk procedure.

Another cheap upgrade I've seen was the 4 piston calipers and 13" rotors from a 97-ish ford cobra. It only needed a custom spacer for the rotor and caliper relocation bracket.

I thought so, but I didn't want to say until I was sure. Kyle, I would NEVER put ford parts on my car, just a personal preference.

 

[Greg Collier]

Porterfields are fine. Ran 'em for years.
Rich

Then he started running "nuclear fall-out radium # 1 titanium firestorm reds", and his rotors started disintegrating

 

[Slow old poop]

Then he started running "nuclear fall-out radium # 1 titanium firestorm reds", and his rotors started disintegrating

I beg your pardon. Titanium, my foot. Those were made from UNOBTANIUM.

(When Roger Penske and Mark Donahue were running the Porsche 962 (or whatever that 1500 hp Porsche was), Penske was asked: "What is the space frame made out of?," and Penske replied, "Unobtanium.").