9-bolt Wilwood FSL bracket
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Car: 87' IROC
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9-bolt Wilwood FSL bracket
We started this discussion in another thread. I decided to make a thread to keep things separated.
The idea is to create a bracket to mount Wilwood FSL calipers to the 9 bolt using a 12" 2pc rotor. The question is, do we need an e-brake?
If not, this should be pretty easy. If we do need an e-brake it gets a bit more challenging. What kind of e-brake?
Internal drum?
or
Seperate spot caliper?
John
The idea is to create a bracket to mount Wilwood FSL calipers to the 9 bolt using a 12" 2pc rotor. The question is, do we need an e-brake?
If not, this should be pretty easy. If we do need an e-brake it gets a bit more challenging. What kind of e-brake?
Internal drum?
or
Seperate spot caliper?
John
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Re: 9-bolt Wilwood FSL bracket
I am looking at how Wilwood did it for the 10 bolt. They used the existing 10 bolt caliper / brake bracket. Then they converted it to a radial mount for the FSL caliper. And their two piece (iron) hat has a friction surface inside of it for the e-brake. So we may be able to use that hat. Although the hat is expensive at $190 each.
Need to look at how the LS1 e-brake is put together. If anyone has a LS1 e-brake assembly / caliper bracket handy, I could really use some measurements. Detailed pictures would help too. Thanks.
http://www.wilwood.com/BrakeKits/Bra...0Brake%20Rear.
John
Need to look at how the LS1 e-brake is put together. If anyone has a LS1 e-brake assembly / caliper bracket handy, I could really use some measurements. Detailed pictures would help too. Thanks.
http://www.wilwood.com/BrakeKits/Bra...0Brake%20Rear.
John
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Re: 9-bolt Wilwood FSL bracket
Wow, just looked at the OEM LS1 parking brake assembly. It is very in-expensive, $65. I wonder if we would be better off buying these and modifying them.
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Re: 9-bolt Wilwood FSL bracket
After looking at it a little closer, it is obvious that the C5 e-brake will be easier to adapt than the LS1. Good news is that Wilwood makes a hat for that as well.
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Re: 9-bolt Wilwood FSL bracket
Ok found some part numbers that would be needed.
GM 12455801 includes the following for both sides: shoes, mounting springs, levers, adjusters, and grommets
GM 12455802 - backing plate, left
http://www.gmpartsdirect.com/results...umber=12455802
GM 12455803 - backing plate, right
http://www.gmpartsdirect.com/results...umber=12455803
GM 12455801 includes the following for both sides: shoes, mounting springs, levers, adjusters, and grommets
http://www.amazon.com/ACDelco-179-2106-Parking-Brake-Shoe/dp/B0010G4ECI/ref=sr_1_1?ie=UTF8&qid=1347323436&sr=8-1&keywords=12455801
GM 12455802 - backing plate, left
http://www.gmpartsdirect.com/results...umber=12455802
GM 12455803 - backing plate, right
http://www.gmpartsdirect.com/results...umber=12455803
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Re: 9-bolt Wilwood FSL bracket
So that should be just about everything needed on the axle, as far as I can tell. Would obviously need to figure out something for brake cables.
Then its just a matter of designing the bracket. Unfortunately that is really hard to do without the parts in my hand.
TEDS, you got your rotors from coleman with a Wilwood hat. So that is the plan here as well? Lets assume for now, we'll use the Wilwood hat in the Wilwood kit. What Coleman rotor do you want to use?
Then its just a matter of designing the bracket. Unfortunately that is really hard to do without the parts in my hand.
TEDS, you got your rotors from coleman with a Wilwood hat. So that is the plan here as well? Lets assume for now, we'll use the Wilwood hat in the Wilwood kit. What Coleman rotor do you want to use?
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Car: '89 Formula
Engine: LS2
Transmission: 4L65E
Axle/Gears: MW 3.42 12 Bolt
Re: 9-bolt Wilwood FSL bracket
I think Ed custom ordered: Box says: 13.00 X 1.10 Directional Vane
Website lists that as the max with min down to 11.75 X .900: so I guess the rears could fall anywhere within that range: http://www.colemanracing.com/Brake-R...ane-P3549.aspx
Wilwood hats are alum
What fits best? I was thinking 12.00 X 1.00, but unsure of other considerations back there.
Brian
Website lists that as the max with min down to 11.75 X .900: so I guess the rears could fall anywhere within that range: http://www.colemanracing.com/Brake-R...ane-P3549.aspx
Wilwood hats are alum
What fits best? I was thinking 12.00 X 1.00, but unsure of other considerations back there.
Brian
Last edited by TEDSgrad; 09-10-2012 at 08:21 PM.
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Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
Re: 9-bolt Wilwood FSL bracket
the rear ls1 backing plate and rotor setup would be a good choice. Everything but the caliper is a off the shelf part you cna get anywhere, so they are cheap and easy to fix. Proper parking brake cables are available too.
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Car: '89 Formula
Engine: LS2
Transmission: 4L65E
Axle/Gears: MW 3.42 12 Bolt
Re: 9-bolt Wilwood FSL bracket
Might need to run a spacer between the axle flange and caliper/e-brake backing plate - depends on which rotor being used. I think the LS1 backing plate is .4" thick.
Since my rotors are only slotted, cosmetically matching them should not be a prob.
I bet the iron hat is the only one with friction material - that's ok.
I'm still on factory 16X8!
Last edited by TEDSgrad; 09-10-2012 at 09:24 PM.
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Car: 87' IROC
Engine: L98
Transmission: T56
Re: 9-bolt Wilwood FSL bracket
I think Ed custom ordered: Box says: 13.00 X 1.10 Directional Vane
Website lists that as the max with min down to 11.75 X .900: so I guess the rears could fall anywhere within that range: http://www.colemanracing.com/Brake-R...ane-P3549.aspx
Wilwood hats are alum
What fits best? I was thinking 12.00 X 1.00, but unsure of other considerations back there.
Brian
Website lists that as the max with min down to 11.75 X .900: so I guess the rears could fall anywhere within that range: http://www.colemanracing.com/Brake-R...ane-P3549.aspx
Wilwood hats are alum
What fits best? I was thinking 12.00 X 1.00, but unsure of other considerations back there.
Brian
You are planning to retain the OEM rear wheels? Would you consider running front IROC's on the rear? They have a lot more caliper room.
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Re: 9-bolt Wilwood FSL bracket
TEDS, you are running lug mount FSL's in the front right? And want lug mount rear FSL's to match?
Yes, I do like the fact that there are cables ready for the LS swap. Although, I ordered two simple things (master cylinder outlet tubes) from ed probably 4 months ago and haven't heard a peep from him yet. So I'm not sure getting cables from him is realistic.
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Car: '89 Formula
Engine: LS2
Transmission: 4L65E
Axle/Gears: MW 3.42 12 Bolt
Re: 9-bolt Wilwood FSL bracket
Yes, want to keep oem wheels. Can put R compound rubber on those for track days, AND I'm still searching for a good resolution to drop spindle-tie rod problem before switching. IMO, 275 is a good street width - I can fit a 255. Watching with great interest at spindle/steering arm mods. As long as oem fits, I'm not forced into a decision. Coleman is only 80 miles from me when my bank acct recovers from body/paint. Someone will find a solution by then.
Radial Mount!
https://www.thirdgen.org/forums/brak...e-fitment.html
Also, here's the suspension build. I have some Dean text at the end of the thread that is always worth a re-read.
https://www.thirdgen.org/forums/susp...g-vetruck.html
Radial Mount!
https://www.thirdgen.org/forums/brak...e-fitment.html
Also, here's the suspension build. I have some Dean text at the end of the thread that is always worth a re-read.
https://www.thirdgen.org/forums/susp...g-vetruck.html
Last edited by TEDSgrad; 09-10-2012 at 11:33 PM.
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Re: 9-bolt Wilwood FSL bracket
Ok that thread really helps. So in review you are using radial mount 6 piston FSL calipers in the front.
What does your front bracketry look like. Obviously you have the radial bracket, but what does that mate to on the spindle? It kinda looks like the C5/C6 radial bracket that Wilwood supplies. So do you have Ed's C5 brackets on your spindle?
So in other words: Spindle -> Ed's C5 bracket -> Wilwood's radial adapter -> Caliper.
Can you provide the Wilwood part number of your fronts? I can't match them up exactly with anything on their website.
What does your front bracketry look like. Obviously you have the radial bracket, but what does that mate to on the spindle? It kinda looks like the C5/C6 radial bracket that Wilwood supplies. So do you have Ed's C5 brackets on your spindle?
So in other words: Spindle -> Ed's C5 bracket -> Wilwood's radial adapter -> Caliper.
Can you provide the Wilwood part number of your fronts? I can't match them up exactly with anything on their website.
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Re: 9-bolt Wilwood FSL bracket
Part # 120-8000-rsr
Label also has, 1.62/1.12,1.25
Yes, Ed's bracket to spindle
Label also has, 1.62/1.12,1.25
Yes, Ed's bracket to spindle
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Re: 9-bolt Wilwood FSL bracket
Smaller holes are bracket to spindle
Bigger holes are bracket to caliper
Bigger holes are bracket to caliper
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