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Dual rear caliper write-up????

Old 07-29-2009, 11:28 PM
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Default Dual rear caliper write-up????

Does anyone have a link to info on how to set up dual calipers in the rear? Any links to a parts list, pics, or step-by-step would help. I'd like to do that this off-season but can not find a write-up on how to accomplish this task.
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Old 07-29-2009, 11:30 PM
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This has nothing to do with FI... lol
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Old 07-29-2009, 11:30 PM
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hahah ^^
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Old 07-30-2009, 12:13 AM
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Originally Posted by 'Trust' View Post
This has nothing to do with FI... lol
it kind of does actually.
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Old 07-30-2009, 12:27 AM
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Originally Posted by elias_799 View Post
it kind of does actually.
I think it may be a little more relevant here: https://ls1tech.com/forums/suspension-brakes-16/, don't you?
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Old 07-30-2009, 02:34 AM
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Originally Posted by 'Trust' View Post
I think it may be a little more relevant here: https://ls1tech.com/forums/suspension-brakes-16/, don't you?

No not really cause the only people that have them is turbo cars. It's very FI relevant.
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Old 07-30-2009, 04:04 AM
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FI relevant!! You know any All motor cars or big nitrous hits that need dual rear brake calipers to hold there car from coming off the hinges at the tree?
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Old 07-30-2009, 06:07 AM
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Not terribly difficult...though kinda pricey

buy a dual caliper kit...strange, aerospace, and wilwood all make kits. Though only some of them work with 9" rears with Big Ford axle ends...

Need a larger diameter manual master cylinder. The kits on sale on this board are 1 1/6" masters, but strange makes a 1 1/8" master thats a direct swap for the masters for ~$100 (or you may be able to convince the sponsor selling them to build with a 1 1/8" strange master at time of purchase)

Need a proportioning valve on the rear brakes (without one the rears tend to lock up first)

Other than that its just tee-ing the lines and running to the brake calipers...

they look cool too


Last edited by Fireball; 07-30-2009 at 06:13 AM.
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Old 07-30-2009, 10:42 AM
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Originally Posted by 'Trust' View Post
This has nothing to do with FI... lol
Very FI relevent. You lose.

Thanks for the help fireball. Anyone else have input? (although anyone who has done this will be in the FI section and probably never look in the brake section)
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Old 07-30-2009, 10:43 AM
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Originally Posted by Fireball View Post

Need a proportioning valve on the rear brakes (without one the rears tend to lock up first)
Do you mean an additional P. valve? Aside from the one that comes on an ABS delete kit?
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Old 08-29-2011, 08:46 AM
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Anyone do this on their car with a DIY kit or anything?
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Old 10-19-2011, 12:24 PM
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This thread is a bit dated but I'll add to it anyway.

I am looking into running a dual rear caliper set-up but with the second caliper being more for a parking/emergency brake on separate lines with a hydraulic pull lever that replaces the standard parking brake lever. This appears to be more common on drift cars. I am installing 2010 Camaro rear Brembos on my car with an LS3 engine swap, and these brembos do not have parking brake capability. I can't find a good cable driven caliper for the parking brake that will fit 14" or 14.3" rotors, 1.1 to 1.25" wide. Thus I am interested in adding a second set of hydraulic calipers. (They would also be good for stealth mode deceleration to slow down when the radar detector goes off.)

I've been searching the web and haven't found much out there other than a few drift cars.
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Old 10-19-2011, 01:38 PM
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Don't do it. It is a fixed caliper not a floating one. Look up "pad knockback". You would have to run a non c clip rear end.
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Old 10-19-2011, 10:15 PM
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I do not believe that pad knockback would be an issue with my application.
I am looking to do this on a car with IRS. No axle to move back and forth.
Pad knockback could happen with only one caliper. It wouldn't matter if the second parking/drift caliper pistons are pushed out because the parking brake lever would pull them back in place.
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Old 10-19-2011, 10:50 PM
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Being Fi has nothing to do with what you're asking! It's called a "Line Lock" snd/or "Trans Break". If you can't hold your car at the line with what you have, you need to upgrade and your car is not a Space Shuttle. Fireball is trying to help you. What he has may help on the line, but would be very dangerous is used as such to try and stop. Purely launching and stopping has nothing to do with IRS vs. Solid Axle. It is a matter of Physics and Dynamics.

ninetres: Why is this so FI relevent? A 1K whp NA car vs a 1K whp FI car....What is the diff? You make it sound like FI is so spooky. Power and stopping force is all it is!

NA, supercharged, turbo'd or peddle powered....stopping is stopping.

Buy a kit for your purpose and budget.
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Old 10-20-2011, 07:30 AM
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Originally Posted by Shadow1999 View Post
Being Fi has nothing to do with what you're asking! It's called a "Line Lock" snd/or "Trans Break". If you can't hold your car at the line with what you have, you need to upgrade and your car is not a Space Shuttle. Fireball is trying to help you. What he has may help on the line, but would be very dangerous is used as such to try and stop. Purely launching and stopping has nothing to do with IRS vs. Solid Axle. It is a matter of Physics and Dynamics.

ninetres: Why is this so FI relevent? A 1K whp NA car vs a 1K whp FI car....What is the diff? You make it sound like FI is so spooky. Power and stopping force is all it is!

NA, supercharged, turbo'd or peddle powered....stopping is stopping.

Buy a kit for your purpose and budget.
majority of the cars that go with dual rear calipers are to hold the car while trying to build boost on the brakes prior to staging...thats why its usually a FI issue. reason is due to autostart. most don't use it in drag racing to help with stopping....thats why parachutes are required at 150+
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