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Old 07-22-2023, 05:13 PM
Zooguy Zooguy is offline
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Default Master power disc brake upgrade

I have a 1966 Pontiac Star Chief executive four-door. It came factory with power brakes but I got a kit to convert to disc brakes.

I don't know if I was maybe sent the kit or what. All the holes in the brackets and hardware is 1/2 inch stuff and my factory bolts I removed are 7/16

Has anybody else ever installed their kit and had this same issue?

Here's the video showing the difference

https://youtu.be/yFGQ_pU8EEU

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Old 07-22-2023, 07:35 PM
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Bill Hanlon Bill Hanlon is offline
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Any particular name of the company that made the kit? Or supplied it?

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Old 07-22-2023, 07:35 PM
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Any particular name of the company that made the kit? Or supplied it? I think I'd be contacting them.

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Old 07-22-2023, 09:14 PM
Zooguy Zooguy is offline
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Master Power Brakes.

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Old 07-23-2023, 09:37 AM
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1959-66 all have 7/16" lower holes as yours does. 1967-68 are 1/2".

I would make them send you the right kit.

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Old 07-24-2023, 10:40 AM
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RocktimusPryme RocktimusPryme is offline
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I know on at least one of the disc kits I have put on other cars that I was instructed to drill the holes out to 1/2". But as I said it was specifically part of the instructions, not a mystery they left me with.

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Old 07-24-2023, 11:50 AM
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Having to drill out the spindle and cross arm is bull****.

Not an easy task - far easier for the supplier to make them 7/16 holes and drill if needed.

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Old 07-25-2023, 09:31 AM
Zooguy Zooguy is offline
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I spoke with the manufacturers this morning and sent them a video. They're sending me the correct parts and hopefully they'll be updating their website to show the correct applications

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Old 07-25-2023, 09:28 PM
kpbrown31 kpbrown31 is offline
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Quote:
Originally Posted by Zooguy View Post
I spoke with the manufacturers this morning and sent them a video. They're sending me the correct parts and hopefully they'll be updating their website to show the correct applications
Nice to hear. I've considered them as a possible option down the road so hoping they treat you right.

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Old 07-27-2023, 09:08 AM
kpbrown31 kpbrown31 is offline
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Just curious, did you get the standard legend series kit or did you upgrade to the HP legend series?

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