[66sprint6]

Has anyone had any experience with either of these products? I scored a great deal on a (NORS) pair of the two piece rotors that are proprietary to our '67, and they came with pads. So now for ease and originality, I see that there are 4 piston calipers available. And also a rebuild kit. I like the idea of rebuilding, but I see in the Chassis manual the need for an SST to install the seals.


calipers. https://www.ebay.ca/itm/175645447296

Rebuild kit. https://www.ebay.ca/itm/235787634958

[694.1]

I converted my old '67 sprint to 4 piston disk brakes.
I said "never again" and would go with single pistons.
There are just waaay too many places for leaks!

[squidtone]

I've rebuilt mine a couple/few times over the decades. I can't think of anything that was hard about it. If your rebuild kits use factory style lip seals, you do have to carefully finesse them in (I used a small, dull flat screwdriver to carefully just dab the lips into the bores...)
I used dorman kits last time, and the boots were wrong. I emailed them, but they just didn't care. I re-used my old boots. Not sure if they've fixed it since then. I may look into your link for that alternative.
I rebuilt mine last about 10 years ago, with new-to-me stainless sleeved calipers. After that rebuild, I'd have to bleed a tiny bit of air out of the calipers every few months of use....but in the past 6 years or so, they've been fine. I can't explain why. They do tend to give big "SNAP" sounds when you transition from forward to reverse direction sometimes...the pads shift. But overall, I like these big calipers.

[gto4ben]

I didn't like the four piston caliper reproductions. The castings' cast iron material looked less dense. I saw a few folks on eBay that sold the repros trying to recover what they spent and go to the original castings. It doesn't necessarily mean the castings are bad but I didn't want to be a beta tester on something that didn't have a track record.

I decided to stainless steel sleeve my originals. The trick was to mirror polish the stainless steel sleeve so that no abrasion of the lip seal would occur. Karps did the work here locally.

I tried the rebuild kits CSSB inc. and others offered and they are good; however, the pistons' outside diameter is supposed to be 2.060" but some came in as low as 2.045" diameter. I had to buy extras and select the largest diameters of the bunch. From the marketing, I think the rebuild kits all come from overseas. i compared the Ali Express kit and dang if I could tell the difference.

When installing the seals and the piston with seals into the bores, I used McKay Brake Assembly Lube. It helps. J22674 or equivalent is very handy to keep the pistons seated in their bores. J22591 is not necessary if the sleeving company tapers the SS sleeve on the end correctly.

The rubber O-ring in the CSSB kit was the incorrect size so I bought a lifetime supply from McMaster. They also forgot some boot seals to include in the kit. Mistakes do happen and they sent me the remainder.

It is really easy to orient the boot upside down. I had to zoom in on the diagrams to understand the correct orientation.

[Andre]

If I remember, Lonestar is the one that rebuilds them. When they are in high supply, a fresh rebuild/new is about $89. I picked up a couple spares. When they aren't as readily available, the price varies. If you exchange through Ames, the core is almost as much as the new .unit.

[ron cozzo]

Originally Posted by squidtone

They do tend to give big "SNAP" sounds when you transition from forward to reverse direction sometimes...the pads shift. But overall, I like these big calipers.

That's what that sound is? Damn, for years I haven't been able to figure out the clunking sound my 68 convertible makes when backing up. Factory 4 piston discs with original 2 piece rotors.

[rockdoc]

I would not hesitate to rebuild them. When I rebuilt my calipers, good-quality parts were very inexpensive. At the time, I found a supplier on Amazon, and I think they were clearing out their inventory. I bought their last 5 pistons (didn't need all of them) for something like $3 each. They are still available. I found the specialty tool for installing the pistons into the calipers for a reasonable price on eBay. The tool was definitely worth it (Kent Moore Disc Brake Caliper Piston Ring Compressor J-22591). You can do it without the tool, but it makes it a breeze. There's a couple on ebay right now for around $20. I rebuilt them in 2018 and they have been trouble-free since then. My '67 had the front disc option, BTW, so mine are OE. As gto4ben said, make sure you get the boots oriented correctly.