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08-17-2018, 11:02 AM | #1 |
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Disc brake question
After reading several threads where it was mentioned that the stopping of vehicles at higher rate of speed was a concern I started looking at options for disc brakes.
Speedway offers a disc kit for the front of my 39 pickup, but states the original steel 16 inch wheels will not work. I think I read somewhere (maybe wishful dreaming) that if a 1/4 inch thick spacer was added that the original wheels would work. Can someone confirm if this works. In doing a quick search for wide five 16 inch disc brake wheels I have come up empty. |
08-17-2018, 01:13 PM | #2 |
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Re: Disc brake question
Don't believe wheel spacing has anything to do with it, it's the wheel bolt pattern that is required to adapt available disc/rotors.
If you insist on keeping the wide 5's, maybe you should consider the possibility of upgrading the drum brakes along with a power booster.
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08-17-2018, 01:28 PM | #3 |
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Re: Disc brake question
The F-150 rotors in Speedway's kit have the 5 on 5-1/2" bolt pattern; but the calipers interfere with stock wheels. I have not heard anything specific as to how much if any spacer will work.
We have used them with repop 15" wheels; had to grind a little extra clearance into a couple spots on the calipers, tho not much. Another thing worth mentioning is that both Speedway's and ECI's F-150/Gm caliper disc brake kits do not move the wheel mounting surface outward an inch or so as do many kits. Don't know of any wide five disc brake set-up being made. Last edited by rich b; 08-17-2018 at 01:32 PM. Reason: more |
08-17-2018, 02:51 PM | #4 |
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Re: Disc brake question
As the stock '39 wheels are a 10 1/4" bolt pattern and the disc brake rotors are a much smaller pattern the stock wheels will not work. I used to have the Speedway disc brakes on my '38. I am now running '40 type wheels but I originally had a local guy make me up some adaptors out of 3/8" steel to adapt my wide five wheels to the smaller disc brake rotors. Worked fine, no interference with the calipers, stock style hub caps still fit, but it may push out the wheels slightly from stock depending on the rotors.
(photo is from the back side) |
08-17-2018, 02:55 PM | #5 |
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Re: Disc brake question
As far as I'm concerned the 11 or 12 inch Bendix brakes are fine on the front. But, that still doesn't solve the wide-5 issue.
Last edited by JSeery; 08-17-2018 at 03:28 PM. |
08-17-2018, 03:21 PM | #6 |
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Re: Disc brake question
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08-17-2018, 04:04 PM | #7 | |
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Re: Disc brake question
Quote:
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08-17-2018, 04:11 PM | #8 |
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Re: Disc brake question
Sounds like my original wheels would work with this kit and the disc brake conversion kit.
https://www.ebay.com/itm/Speedway-Mo...5/381245137222 |
08-17-2018, 04:33 PM | #9 | |
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Re: Disc brake question
Quote:
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08-17-2018, 04:39 PM | #10 | |
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Re: Disc brake question
Quote:
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08-17-2018, 04:42 PM | #11 |
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Re: Disc brake question
If he gets the kit with either the ford 41/2" or Chevy 4 3/4" rotor kit it will .
No where in the post does he say he's looking at the f-150 rotor kit . |
08-17-2018, 04:52 PM | #12 |
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Re: Disc brake question
If you reread my post I was only giving a warning about the Speedway kit with the F-150 rotors. He never specified which kit he was looking at from Speedway.
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08-17-2018, 04:58 PM | #13 |
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Re: Disc brake question
It sure will! Think about it......12" Bendix ( LINCOLN) backing plates work perfectly-well with '37-'39 wide-five drums. DD
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08-17-2018, 04:58 PM | #14 |
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Re: Disc brake question
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08-17-2018, 05:34 PM | #15 |
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Re: Disc brake question
Yep, I was just thinking F1/F100 type! The 11 inch ones are what I have worked with, 5 x 5 1/2 drums. No experience with the Lincoln brakes/backing plates. That's good to know that they work with the wide drums.
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08-17-2018, 05:51 PM | #16 |
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Re: Disc brake question
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08-17-2018, 07:07 PM | #17 |
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Re: Disc brake question
I really appreciate ALL the comments, so much knowledge and experience on this board. You have saved me a lot of $$$$$ in trial and error by freely giving your experience.
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08-17-2018, 07:41 PM | #18 |
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Re: Disc brake question
Check out Wilwood. They sell a hub with the wide 5 pattern. Probably get everything you need from them. Saw it installed on a ‘32 with wide 5 wheels. Mike
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08-17-2018, 08:13 PM | #19 |
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Re: Disc brake question
I think there's a guy on the H.A.M.B. that goes by "55 Willys" (or something close) that makes some specialized wide-5 stuff. It might be worth taking a look over there. Come to think about it, you'll probably have better luck looking for disc brake stuff over there anyway.
Last edited by tubman; 08-17-2018 at 08:31 PM. |
08-17-2018, 08:17 PM | #20 |
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Re: Disc brake question
If you use that Speedway wide 5 wheel adapter along with a disc kit that has 4-1/2" bolt pattern; your wheels will be moved out about 1-3/8" per side. 1" from the brake kit and another 3/8" from the adapter.
If you really want to keep the wide 5 wheels and you have good drums; the MT brakes with 1-3/4" shoes may be you best bet. I would be interested in learning more about the Wilwood wide 5 hub set mentioned above by @Mike in AZ; I've only seen their Starlight wide 5 hubs on track cars and wonder how they were fitted to regular spindles. |
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