Brake upgrades, retain 4 bolt wheels? |
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Brake upgrades, retain 4 bolt wheels? |
jpnovak |
Nov 2 2012, 03:13 PM
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#1
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They call me "Nanoman" Group: Members Posts: 231 Joined: 26-August 09 From: Austin TX Member No.: 10,736 Region Association: Southwest Region |
So the Subaru conversion is up and running and I am planning for next season's track events. A concern of mine is the stock solid rotors ability to dissipate heat. I went digging in the archives but the information is scattered to say the least. Most was why Boxster calipers are not an upgrade. No kidding.
Now I am very familiar with the "upgrades" and real upgrades related to early 911s. I only want more heat capacity over a run session. I tracked my warmed over early 911 for years with stock M front calipers and had no issues. Proper brake technique, cooling ducts and decent pads can really provide excellent braking. I am not as familiar with the 914 system upgrades. The system has been brought up to stock quality with rebuilt calipers and for the street functions just fine. I have no issues with the braking force just the ability to stay cool. What are the options? Will cooling ducts (AJ or other) work on these cars in the same way they do on a vented 911 rotor? What pads work well? Can I stay with 4 bolt wheels? I do not really want the added expense of a 5 bolt conversion right now. Are there any "hats" that will fit over a stock 914 brake "hub"? |
jpnovak |
Nov 4 2012, 08:14 PM
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#2
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They call me "Nanoman" Group: Members Posts: 231 Joined: 26-August 09 From: Austin TX Member No.: 10,736 Region Association: Southwest Region |
@rohar - what rotor will you use with the undrilled wilwood hat?
Thanks for all the great ideas. It looks like I am going to have to fab something. I thought about using the old rotor as a hat to mount an aftermarket rotor. |
rohar |
Nov 7 2012, 12:58 PM
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#3
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Senior Member Group: Members Posts: 924 Joined: 25-October 08 From: spokane Member No.: 9,685 Region Association: None |
@rohar - what rotor will you use with the undrilled wilwood hat? Thanks for all the great ideas. It looks like I am going to have to fab something. I thought about using the old rotor as a hat to mount an aftermarket rotor. Truth be told, it's on the "to do list" so it's gonna be a bit before I get there. I'll be running M's up front and probably BMWs in the rear next spring. Shortest path to running and all. That said, the Audi engine I'm dropping in the car has the possibility of generating well over 350hp. It won't at first, but you know how tuning goes. Eventually I'm gonna have to step up to big boy brakes. There's virtually nothing available for vented rears on 4 lug so 7" hats are the only easy way out. Since they make blanks, I can just toss them on the mill with a rotary table and drill them to fit. Once you go there, there's a LOT of disks available. It also moves the disk out, toward the rim a bit so there's automatically room for caliper adapters. Maybe 'Vette calipers? (IMG:style_emoticons/default/smile.gif) |
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