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Fitting issues with Wilwood brakes and Magnums
#1
HELP!!!Huh
I have a problem. I bought and installed a Wilwood 6 piston caliper disc brake system replacing the manual drums in the front. Wilwood part # 140-12945-DR. I knew from the statement on CJ Pony that I needed to go to 15" rims so I bought a set of 4 - 15" Magnum 500's and put a set of TA radials on them. Now after installing the new brakes I find the wheels won't fit.
Does anybody know what wheels will fit? I'm looking to stay period correct and go with something like the 5 spoke Cragar or American Racing style rims.
Mike

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#2
Mike, relax - someone will be along to answer your questions. If you post out to too many threads, your answers and discussion will be spread out everywhere and hard to keep straight.

I don't have any experience with Wilwoods, but I'm pretty sure any disc brake set-up with rotors much bigger than 10" isn't going to work with 14" rims.

One of the guys with Magnums and Wilwoods should be able to answer your questions shortly.

Eric

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#3
Mike1972Mustang;223015 Wrote:HELP!!!Huh
I have a problem. I bought and installed a Wilwood 6 piston caliper disc brake system replacing the manual drums in the front. Wilwood part # 140-12945-DR. I knew from the statement on CJ Pony that I needed to go to 15" rims so I bought a set of 4 - 15" Magnum 500's and put a set of TA radials on them. Now after installing the new brakes I find the wheels won't fit.
Does anybody know what wheels will fit? I'm looking to stay period correct and go with something like the 5 spoke Cragar or American Racing style rims.
Mike

I don't have any experience with Wilwoods, but I'm pretty sure any disc brake set-up with rotors much bigger than 10" isn't going to work with 14" rims.

Where is the rim contacting the caliper? On the outer-most edge, one of the front edges catching on one of the 'ribs' in the middle of the rim?

One of the guys with Magnums and Wilwoods should be able to answer your questions shortly.

Eric

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#4
No worries - it's cool. We had a guy awhile back that flooded about a dozen threads with the same question, and got mad when he hadn't received the answer he wanted within a few minutes. Wink Big Grin

I hope you get your answer soon - Thanks for understanding. thumb

Eric

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#5
I did get 15" Mag 500's but there his a hump inside the rim that hit the caliper. If the rim portion didn't have that hump before getting to the inner part of the wheel all would be fine. So to answer your question that hump hits the outside surface of the caliper.
I'll obviously have to get another set of rims. I'll take the 15" 500's and put them on my 79 Ranchero so they won't go to waste. So what if the Ranchero has a pony centerpiece in the rim. It can run with the big dogs (ponies) too!
Mike

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#6
Could a small spacer (think 5 mm) put your rims out far enough so that they would clear the calipers?
Friend of mine had a Curry rear axle with discs and he had exactly the same issue. A 5 mm spacer solved it for good.
How wide are your rims and what size are your tires?
If they are too wide, a spacer will make them rub the fenders.
Or is the diameter of the calipers so that the rims will just not go over them at all?

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Mike

"If I were you...... I´d rather be me."  Tongue

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#7
luxstang;223274 Wrote:Could a small spacer (think 5 mm) put your rims out far enough so that they would clear the calipers?
Friend of mine had a Curry rear axle with discs and he had exactly the same issue. A 5 mm spacer solved it for good.
How wide are your rims and what size are your tires?
If they are too wide, a spacer will make them rub the fenders.
Or is the diameter of the calipers so that the rims will just not go over them at all?

I just went out and checked. It's more like 3/8" so I would have to space 1/2" to give enough clearance. I think that would be too much, don't you?
Mike

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#8
+1
I have the Wilwood brakes and 15" rims though not magnums and the fitment was good. If I remember correctly the kit comes with a set of spacers for rim issues so just give them a try. I wound up needing them on the rear brakes on my car.

-john
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#9
Try and use washers on the wheel studs. Add until they fit over the calipers then see if they fit under the wheel wells. DON't DRIVE IT!
Measure the height of the stack of washers.
Then you know exactly how much spacer you need and whether it works in the first place.
It depends on the width of your rims and tires.

[Image: 1z21rv4.png]

Mike

"If I were you...... I´d rather be me."  Tongue

Check out my video:
http://www.7173mustangs.com/thread-my-mustang-in-action

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#10
luxstang;223303 Wrote:Try and use washers on the wheel studs. Add until they fit over the calipers then see if they fit under the wheel wells. DON't DRIVE IT!
Measure the height of the stack of washers.
Then you know exactly how much spacer you need and whether it works in the first place.
It depends on the width of your rims and tires.

Thanks Mike,
I'll give that a try today.
Mike

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