Installing ATS Brembos on the Cobra.

Blkkbgt

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I wonder if any of these will work?
Master Cylinders & Proportioning Valves

Possibly as long as the ports line up and are of the correct size. I believe the reservoir would also need to by swapped over as the mustang's is angled down towards the nose of the car.

I am trying to figure out what vehicle that master cylinder comes from as well. figuring that out should also help us to determine if it would work or not.
 

Mustang5L5

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The Dodge hydroboost one looks like it would be close enough to at least possibly bolt up. Of course would need to adapt to the fittings. need to try it also

I think one needs to try it with the stock MC and give some feeback. On paper, increasing the caliper piston size without adjusting the MC bore size would translate to a longer stroke, and more sensitivity and a softer feel. The danger is actually running out of pedal stroke before achieving max braking performance (ie hitting the floorboard in a panic stop).

If that is true, then one needs to weigh the risks. Unbalanced F/R brake bias, or better balance with a pedal stroke that might be too long. If I had to choose, i'd go with the first one.
 

omj

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I think one needs to try it with the stock MC and give some feeback. On paper, increasing the caliper piston size without adjusting the MC bore size would translate to a longer stroke, and more sensitivity and a softer feel. The danger is actually running out of pedal stroke before achieving max braking performance (ie hitting the floorboard in a panic stop).

I reviewed the stock MC. Check post #321
 

Blkkbgt

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The Dodge hydroboost one looks like it would be close enough to at least possibly bolt up. Of course would need to adapt to the fittings. need to try it also

I think one needs to try it with the stock MC and give some feeback. On paper, increasing the caliper piston size without adjusting the MC bore size would translate to a longer stroke, and more sensitivity and a softer feel. The danger is actually running out of pedal stroke before achieving max braking performance (ie hitting the floorboard in a panic stop).

If that is true, then one needs to weigh the risks. Unbalanced F/R brake bias, or better balance with a pedal stroke that might be too long. If I had to choose, i'd go with the first one.

Even with the larger rear pistons coupled with the ATS calipers up front I don't see anyone running out of pedal before locking the brakes up. I could also see people with ABS over powering the system and locking the fronts up as well. Now the amount the pedal travels before that happens may be a little unnerving.

I am still waiting for someone to actually run this entire setup and report back. I actually backed out of buying an insert kit mainly due to the bias issue so if there is a way to actually fix it I may grab a kit despite my other concerns with the caliper modifications.
 

cj428mach

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I am still waiting for someone to actually run this entire setup and report back. I actually backed out of buying an insert kit mainly due to the bias issue so if there is a way to actually fix it I may grab a kit despite my other concerns with the caliper modifications.

Why? Everyone is calculating cobra R like bias which is a ford build race car.
 

01yellercobra

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I moved my spacers to the front so I could get this thing off jackstands and take it for a spin. The amount the pedal moves before significant braking occurs seems to have increased. It reminds me of going from a manual system to a boosted system. The amount isn't huge (maybe 1/4-1/2" of travel) but it is noticeable if I'm not just being hyper sensitive. Braking performance seems increased and panic braking is still excellent. I was able to find room to do two panic stops from ~60mph and got the initial chirp followed by modulation that I'd expect. All in all, this is a great swap and the extra pedal travel will probably be no big deal once I get accustomed to it. I have the ATS Brembos in the front and the 43mm Taurus calipers in the rear. I think I'm going to need new front wheels though. The poke is a bit too much for me. Click the thumbnail for a larger image.

View attachment 1621769 View attachment 1621770 View attachment 1621771 View attachment 1621772
The Dodge hydroboost one looks like it would be close enough to at least possibly bolt up. Of course would need to adapt to the fittings. need to try it also

I think one needs to try it with the stock MC and give some feeback. On paper, increasing the caliper piston size without adjusting the MC bore size would translate to a longer stroke, and more sensitivity and a softer feel. The danger is actually running out of pedal stroke before achieving max braking performance (ie hitting the floorboard in a panic stop).

If that is true, then one needs to weigh the risks. Unbalanced F/R brake bias, or better balance with a pedal stroke that might be too long. If I had to choose, i'd go with the first one.
Like what omj posted?
 

Blkkbgt

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Why? Everyone is calculating cobra R like bias which is a ford build race car.

Because the bias without the larger calipers in the rear is NOT the same as the 00r kit and at that time mustang5l5 hadn't found a larger caliper for the rear.

Everyone running around with just ATS calipers up front has a bias of about 80/20 which is not acceptable. According to jack hidley of MM adding just the front calipers will actually increase the stopping distance of the car compared to the standard cobra setup.
 

wckdvnm

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Does he have the larger rear calipers? I didn't see where he stated that. Mustang5l5 is wondering about the ATS calipers with the larger 43mm rear.

He does, I think he was the first to do it and post #321 he talks about how the pedal feel changed.
 

KBR

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Everyone running around with just ATS calipers up front has a bias of about 80/20 which is not acceptable. According to jack hidley of MM adding just the front calipers will actually increase the stopping distance of the car compared to the standard cobra setup.

This is very discouraging news. I am about to install ATS calipers w/Lowranger kit, stainless steel lines front and rear, slotted rotors, and new pads. From what I had read between here and Facebook groups, I thought this was a nice upgrade. I have almost $800 invested in parts including caliper paint and decals. I really hope it's not a downgrade.
 
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omj

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I drove my 06 F350 that has a similar system yesterday. My cobra pedal has just a little bit more travel than my truck. It's hard to quantify but I'd put it around 10-15%. I also drove my 2012 Impala and the braking feel was pretty much the same but not as firm throughout the pedal range. I feel the braking has increased based on my limited and unscientific testing. I still have all the oem parts so I can revert to my stock setup if someone proves the big brakes are a hindrance.
 
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KBR

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Thanks for all the info everyone.
I'm sure eventually we'll know the best combo of mods for improved braking.

I plan on doing the install in a couple weeks(school vacation).

Should I leave the rear calipers alone or swap them?
 

Mustang5L5

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I moved my spacers to the front so I could get this thing off jackstands and take it for a spin. The amount the pedal moves before significant braking occurs seems to have increased. It reminds me of going from a manual system to a boosted system. The amount isn't huge (maybe 1/4-1/2" of travel) but it is noticeable if I'm not just being hyper sensitive. Braking performance seems increased and panic braking is still excellent. I was able to find room to do two panic stops from ~60mph and got the initial chirp followed by modulation that I'd expect. All in all, this is a great swap and the extra pedal travel will probably be no big deal once I get accustomed to it. I have the ATS Brembos in the front and the 43mm Taurus calipers in the rear. I think I'm going to need new front wheels though. The poke is a bit too much for me. Click the thumbnail for a larger image.

Thanks for the feedback. Seems you may be the first person to try the ATS/Taurus combo and report back. I had a feeling one drawback would be increased pedal travel.
 

Mustang5L5

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Why? Everyone is calculating cobra R like bias which is a ford build race car.


It's not though. The Cobra R brembos are 36mm/40mm calipers.

The ATS brembos are 44mm/44mm calipers. That's a significant increase in braking power to the front, which is why many are interested in a rear upgrade to balance that.
 

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