C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

C6 Z06 brakes

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Old Oct 29, 2005 | 12:06 PM
  #21  
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The rotor size doesn't affect it... the bolt holes are still in the same place as for a C5, relative to the axis of rotation.

I'll try and draft up an adapter right now that'd bolt on to the early C4s, as soon as I check the bias effect it'll have and have a solution for that too. After I get done with this zf6 install...
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Old Oct 29, 2005 | 05:11 PM
  #22  
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Haven't heard from Ed yet.

Coaster, keep us posted. What I meant by rotor size was in terms of diameter. If it's bigger then you'd have to move the caliper out from the center of rotation 0.5" per 1" increase in rotor size. Should be cake if you don't have to move the caliper in or out (in reference to the middle of the car), even then, just a matter of finding the right measurements. Need a few new bolts per side for the bracket. I assume the C4 spindles are more than strong enough to hold the extra stopping torque?

Just some ideas that I was thinkin : We'll figure it out!
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Old Oct 29, 2005 | 10:55 PM
  #23  
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Originally Posted by Crazy Cowboy
Haven't heard from Ed yet.

Coaster, keep us posted. What I meant by rotor size was in terms of diameter. If it's bigger then you'd have to move the caliper out from the center of rotation 0.5" per 1" increase in rotor size. Should be cake if you don't have to move the caliper in or out (in reference to the middle of the car), even then, just a matter of finding the right measurements. Need a few new bolts per side for the bracket. I assume the C4 spindles are more than strong enough to hold the extra stopping torque?

Just some ideas that I was thinkin : We'll figure it out!

I already know what the measurements are. Trust me, the rotor diameter has no effect. Ed's adapters won't fit because of interference, but the bolt holes are in the right place. The thickness is also correct.
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Old Oct 30, 2005 | 03:04 AM
  #24  
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Originally Posted by CentralCoaster
I compared these against the salinas and electrodynamics adapters.. they won't fit. You'll need to modify the adapters or make your own. The npt connection looks sorta in the way too. Your adapters would have to resemble the c6 knuckle to some extent. I can see an adapter for the early c4 being an easy task.. but getting it on a 88up will take a little more creativity, maybe even cutting the stock knuckle.

Where are you seeing the conflict with the 06 z06 caliper on the c4 with ed's brackets? In looking at the movit setup which also includes a rather large caliper it looks like there is plenty of room to have the caliper on theback side of the spindle. I realize that ed's and others brackets to clock the caliper a bit more, but I am really curious about this. I working on the same idea here of adding these to a 91 c4.
Where did you see it hitting? Thanks!


http://forums.corvetteforum.com/show...3&page=8&pp=20



Above is a photo of the back side of a late model spindle with the electrodynamics adapters with a 2001-2005 z06 caliper. Are we going to hit at the caliper to adapter location or at the top where the upper ball joint connects do you think?
http://www.electro-dynamics.com/brakes/BF004%20rear.jpg

If I am correct then what we need here is a bracket close to the BF-008/9 series from them. This is the one they use to clock the large porsche calipers back around to about 3 or 9 oclock on the spindle. See photo below for reference. What did you come up with central coaster?

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Old Oct 30, 2005 | 01:28 PM
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That Porsche brake setup looks AWESOME! Bet the new 06 Z brakes work just as good or better and probably cheaper new than used Porsche brakes (?)
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Old Oct 30, 2005 | 04:11 PM
  #26  
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Look at the 06 caliper. Draw an imaginary plane that lines up with the shiny surfaces where it bolts to the knuckle. Now every part of the caliper that crosses that plane has to be worked around with the adapter.
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Old Oct 30, 2005 | 05:18 PM
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Originally Posted by CentralCoaster
Look at the 06 caliper. Draw an imaginary plane that lines up with the shiny surfaces where it bolts to the knuckle. Now every part of the caliper that crosses that plane has to be worked around with the adapter.

So.... can ya do it?
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Old Oct 30, 2005 | 06:13 PM
  #28  
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Not without a Z06 caliper, and not without a machine shop.
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Old Oct 30, 2005 | 10:49 PM
  #29  
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Originally Posted by CentralCoaster
Not without a Z06 caliper, and not without a machine shop.

Once we receive the caliper we will have a look. I thought maybe you already had both.
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Old Oct 31, 2005 | 08:37 AM
  #30  
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is there some reason this caliper will
not fit a 13 inch diameter rotor?

also what rotor thickness, I assume it is 1.25 inch?
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Old Oct 31, 2005 | 03:54 PM
  #31  
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I emailed the electrodyne guys and they don't have a caliper yet. I will mock this up once I pick up the brackets from a buddy this week. Worse case we will need to reclock the bracket. It doesn't look like a huge problem.
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Old Nov 1, 2005 | 10:50 AM
  #32  
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so has anyone fitted a set of these calipers on a C4 yet...I have all the parts for a C5 upgrade including red powder coated calipers, but I might sell it if I can get these.

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Old Nov 1, 2005 | 12:25 PM
  #33  
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Originally Posted by Red_Vette_93
so has anyone fitted a set of these calipers on a C4 yet...I have all the parts for a C5 upgrade including red powder coated calipers, but I might sell it if I can get these.

Not that i know of, but I get the brackets this weekend and will be mocking this up over the weekend if everything arrives. I will photgraph the mock up as we go along. It will be done on a 91MY C4 with a current J55 package on it for reference.

If anyone has already done this work, please let us know and post some photos here. Centralcoast vette? Did you get a chance to mock this up yet?
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Old Nov 1, 2005 | 12:34 PM
  #34  
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Does everyone understand that the C6 Z06 calipers (front) don't even use a bracket as previous generations of brakes did? Ie the caliper is bolted directly to the spindle...

I don't see how a C5 to C4 caliper bracket will assist in finding out if the C6 Z06 calipers will fit a C4.

Nonetheless...I'm interested to see how it turns out...a 6 piston factory backed caliper is worthy of researching.

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Old Nov 1, 2005 | 01:06 PM
  #35  
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How much for the Porsche brakes? Is it a big red caliper and 13" rotor?
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Old Nov 1, 2005 | 02:03 PM
  #36  
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Originally Posted by No Go
Does everyone understand that the C6 Z06 calipers (front) don't even use a bracket as previous generations of brakes did? Ie the caliper is bolted directly to the spindle...
The C6 Z06 caliper bolts directly onto a C5. If it were not for the clearance issues, it would work with the existing C5->C4 adapter brackets.
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Old Nov 1, 2005 | 02:15 PM
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Originally Posted by 93Polo
How much for the Porsche brakes? Is it a big red caliper and 13" rotor?
I'm selling Brembo 4 piston setup (used) F40 calipers for $1750.00. some dealers are selling a smaller 4 piston brembo caliper i think it's the F30 caliper, but not sure. The Kit NEW with the F40s is over $3k. you can get a movit 4 piston setup like the porsche system for $2300.00 no cutting and you can use your stock wheels.

rob

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Old Nov 1, 2005 | 02:28 PM
  #38  
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Wasp, I know you set is up for sale

I'm looking for the future. In about a year I'll be looking for a C4/C5 track car and I like the idea of keeping it under 17s. I have a 17" set of Fikse FM5s and an 18" set of Forgelines for the next car.
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Old Nov 1, 2005 | 03:55 PM
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Originally Posted by No Go
Does everyone understand that the C6 Z06 calipers (front) don't even use a bracket as previous generations of brakes did? Ie the caliper is bolted directly to the spindle...

I don't see how a C5 to C4 caliper bracket will assist in finding out if the C6 Z06 calipers will fit a C4.

Nonetheless...I'm interested to see how it turns out...a 6 piston factory backed caliper is worthy of researching.

it works like this. The c6 calipers will bolt onto the spindle of a c5 no problem. The bolt hole locations are the same size and location and seem to work just fine. When it comes to the C4, the bolt holes are in a different location and spacing on the spindle. When you want to take 97-04 c5 calipers and brakes, you need to add an adapter like the one shown here to the spindle. This allows you to put to bolts in the spindle where the original c4 caliper went, and then it will now hold the new caliper (97-04) in place. The C6 caliper will work the same, but there is a reported interference issue with how far up the adapter bracket c4->c5 clocks the new 06 z06 caliper on the existing c4 spindle. Also centralcoastvette reported to me that there may be some interference issues with the c4->c5 caliper adapter bracket and the new 06 z06 caliper due to its size and shape.


The thing with the 4 bolts in it is the adapter bracket that allows c5 calipers to bolt to the c4 spindle. This is what the 06 z06 caliper will need to bolt to as well. If this moves it up too high then we will need to make a new version of this to get the 06 caliper on the car.
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Old Nov 1, 2005 | 04:06 PM
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Got it.

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