So with the invaluable help of Fierohutch, I installed my 12" corvette rotors with the kit from WCF. I got it to work with 87GT rims (88 GT rims will NOT FIT, offset in front will contact rotor). I had to ask hutch to grind these 4 little tabs on the inside of the wheel to clear the caliper, but it eventually barely fit.

The brakes work great, except they fade faster than the stockers...The 15" wheel is way too close to the outside of the rotos, and not much air is getting in. They are good for 2 hard stops from 70, then they begin to fade. I have new wheels coming, they will be here on wednesday, a 16"/17" combo. The brakes do look incredible under the rims...you can barely see the caliper through the wheel...it is all rotor!

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Thanks Aus!
More info at: https://www.fiero.nl/forum/Forum1/HTML/043357.html

So may I ask what the problem is!? Did you contact WCF to see if they could help you with whatever it is!?

--- Goobz!

thats crazy. what do you mean by fade? like they stop working??

Fade is when the brakes get too hot and the coeffecient of friction drops. You have to push harder to stop.

The problem is the 15" wheels. They are too close to the rotor, about 3/4" of clearance between the rotor and the inside of the wheel. They cannot get any air to go through them, because the air needs to go from the outside edge of the rotor to the inside. There is no room on the outside, so they fade really fast and take a while to cool down.

The design of the stock lace wheels doesn't help either. The diamond part has a lip the comes down and restricts the airflow...along with all those spokes.

Like I said, the "fix" is the new wheels I have coming. I recommend following what WCF says and using 16"+ wheels with this swap.

I hope the rims are "breathers" with 5-spokes? Why not a 17/18 combo? More air for the fronts, right?

Nice open 5 spoke design.

Staying with 16/17 for weight and money. These rims are 11.5 lbs front and 16 lbs rear....I will say no more. You guys need to wait! lol

[This message has been edited by Bigfieroman (edited 06-05-2005).]

I'm pretty sure WCF says they won't work with stock rims (or at least they aren't recommended).

They say that the stock rims won't fit. That is true, for 88 rims...specifically the front. I am using 87 rims, which fit with a little grinding.

No Pics (!?) .... is this a tease or what ..,

I'll get some before I swap to the new wheels...seriously, you can barely see the caliper, there is about 2mm of clearance from the top of the caliper to the inside of the wheel

WCF Brakes are not recommended for 15-inch wheels for the same reason that you are having with no air for cooling.
I have them on 17-inch wheels and those brakes "Stop" the car each and every time. Make sure that you paint the rotor since they will "Rust" on the edges real fast. I had to do that yesterday. Now they are great looking.

Very nice product for not that much money that comes with everything that you need for better stopping power.

I would recommend this product to anyone who needs better stopping power now!

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Thank you,
Robert Ver Halen
Winston-Salem, NC
(IZA-TOY)

Rver,

Read the website, they say the 15" won't fit over the brakes...like I said, it took a lot of fitting. I don't think they have ever used the 15s and the corvette rotors.

I had my rotors zinc plated. Rust free, baby!

[This message has been edited by Bigfieroman (edited 06-05-2005).]

quote Originally posted by Bigfieroman: Fade is when the brakes get too hot and the coeffecient of friction drops. You have to push harder to stop. The problem is the 15" wheels. They are too close to the rotor, about 3/4" of clearance between the rotor and the inside of the wheel. They cannot get any air to go through them, because the air needs to go from the outside edge of the rotor to the inside. There is no room on the outside, so they fade really fast and take a while to cool down.

You've got this backwards. The rotor is a centrifugal air pump like the compressor in a turbocharger. Air goes from inside the rotor to outside, not vice versa.

Really? Every animation or illustration I have seen has it going outside in. Huh.

Whatever you've seen is wrong in that regard, then. Air can't go from outside in unless the rotor is being driven by airflow and not the other way around.

[This message has been edited by Will (edited 06-05-2005).]

Ohh well. Either way, I believe bigger wheels will quickly alleaviate the problem.

I'd really like to get a set of these but I thought they were like almost $2000 ? Did someone have a sale ?

This kit only fits on 88 cars. You can get rotors from www.rockauto.com for like $12 each, you have them drilled for the 5X100 pattern (I used 13mm wide holes), and buy centering rings and caliper brackets for $200 some from WCF. I recommend new pads all around as well. You retain the stock spindle, caliper, pad, and brake line. This is nothing more than a glorified rotor swap. Total cost for me was like $300.

Thanks, I thought you were talking about the whole swap including the calipers ....

Can you post a pic of how you setup your brake cables ?

K...pics in the next few days.

I would expect getting the rotors cross drilled would open up passages for the air to escpae, and to let them cool again. you really dont want them things warping from over heating. and, the x-drilling looks cool

quote Originally posted by Bigfieroman: This kit only fits on 88 cars. You can get rotors from www.rockauto.com for like $12 each, you have them drilled for the 5X100 pattern (I used 13mm wide holes), and buy centering rings and caliper brackets for $200 some from WCF. I recommend new pads all around as well. You retain the stock spindle, caliper, pad, and brake line. This is nothing more than a glorified rotor swap. Total cost for me was like $300.

What is the rotor part # you are using from rockauto ?

The rotors are 1988 Corvette front rotors, I got Allsafe brand p/n 55997RGS from www.rockauto.com. Current price is $13.77 each.

[This message has been edited by Bigfieroman (edited 06-08-2005).]