Big rear brakes...hmm

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Rick
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Big rear brakes...hmm

Postby Rick » Wed Dec 14, 2011 9:37 pm

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Stumbled upon this on the tech. Stock rotor/hat modded to fit $30 Wilwood vented rotor, a correct piston sized caliper and custom bracket= rear BB

Rotor: http://www.summitracing.com/parts/WIL-160-0471/

Thoughts?
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Re: Big rear brakes...hmm

Postby Yoshi » Wed Dec 14, 2011 9:53 pm

looks nice...
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Re: Big rear brakes...hmm

Postby ponycarman » Wed Dec 14, 2011 10:17 pm

Neat! Are there any specifics on the modifications?

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Re: Big rear brakes...hmm

Postby mvrk10256 » Wed Dec 14, 2011 10:20 pm

it looks like it fits perfectly, so you don have to worry about centering it. Just drill holes and bolt the larger rotor onto the stock one. Just need to find the right caliper, and make a braket. Also you have to make a spacer to accomidate the fact the rotor is closer to the wheel face now.
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Re: Big rear brakes...hmm

Postby ten2doyle102 » Fri Dec 16, 2011 4:05 am

So what are we doing here??? Modifying the rotor to bolt that on? I am slightly confused... lol!
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Re: Big rear brakes...hmm

Postby ponycarman » Fri Dec 16, 2011 4:48 am

Well from the summit link its a vented rotor. Probably a little bigger too but I dont know the stock measurements to compare.
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Re: Big rear brakes...hmm

Postby Rick » Fri Dec 16, 2011 5:28 pm

Using the stock rotor "hat" and modify to mount a bigger vented rotor. The hat is the expensive part of the rear BBK, thats a lot of aluminum to machine.
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Re: Big rear brakes...hmm

Postby M20_fever » Fri Dec 16, 2011 11:12 pm

true, though you only need to do it once. But between the machining on the rotor, and the machining for the brackets, and the cost of whatever caliper you find that will work you could probably get one of Lee's kits and have the R&D and customer support backing it up.
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Re: Big rear brakes...hmm

Postby Rick » Sat Dec 17, 2011 12:25 am

And thats true as well :)

If you enjoy tinkering and screwing around it could be an option though. I dont know how much a machine shop would charge to turn down the stock rotor just so it is big enough for a bolt flange for the new rotor.

Or just slap some hawk pads on the stock rear setup and forget it. I am going to buy Lee's front kit at some point when I have a spare grand to get rid of. I dont right now unfortunately :(
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Re: Big rear brakes...hmm

Postby M20_fever » Sat Dec 17, 2011 9:48 pm

Im running hawk hp+ in the rear now and they work well, but not optimal brake biased with the 280mm ex kit up front. Im going to try and install an adjustable biased valve when I drop the rear sub frame next year.
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Re: Big rear brakes...hmm

Postby Daniel1 » Thu Oct 25, 2012 3:57 pm

How do I change the rear brakes on my E30?
I have them in bits but I cant get the piston to go back to make space for the new "bigger" pads.
I have tried a g clamp and levering carefully, that works with the front side ones. I need it for the
next morning. So please reply fast with your ideas guys. thanks
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Re: Big rear brakes...hmm

Postby M20_fever » Thu Oct 25, 2012 4:43 pm

They should compress just like the front ones. If your won't then chances are the piston is seized and the calipees need to be rebuilt or replaced.
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Re: Big rear brakes...hmm

Postby blasphemy101 » Thu Oct 25, 2012 4:46 pm

Daniel1 wrote:How do I change the rear brakes on my E30?
I have them in bits but I cant get the piston to go back to make space for the new "bigger" pads.
I have tried a g clamp and levering carefully, that works with the front side ones. I need it for the
next morning. So please reply fast with your ideas guys. thanks


I've never had to do anything special to compress the pistons. Sometimes it does take some effort, though. You might have corrosion in the caliper cylinder. If you truly can't get the piston to move, you may need to rebuild the calipers.
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Re: Big rear brakes...hmm

Postby blasphemy101 » Thu Oct 25, 2012 4:47 pm

Tony/Yoshi - could this be moved to a new thread? Kind of off-topic lol
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Re: Big rear brakes...hmm

Postby M20_fever » Thu Oct 25, 2012 4:48 pm

Yeah, dont feel like moving posts. OP, please start a new thread if you have more questions.
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