Just picked up a set of lt1 rear calipers and was wondering if anybody makes a rebuild kit for them? I ask cause they are corroded bad from sitting and would like to sand blast them and disassemble them.

 

Try Rockauto.

 

Looks like LT1 cores are going for $40-$45. Might be worth it for "new" remanufactured calipers. And someone else will have done the work for you.

Otherwise, an alternative to sandblasting, especially if you have to send them out to have it done, is this product. It will make the calipers look brand new again, without any blasting.


I used it on all of the calipers in the following images, no blasting. All looked as nasty as the calipers in the first two images below. If you still choose to blast, then this would probably make an excellent after-blast wash to liven them up even more. Then rebuild, as you see fit.

 

Now thats a great idea. Why i choose to sandblast them is i already have a cabinet available to use. I just installed my new to me compressor.

 

Dang, that **** really works! I gotta remember that.

 

I do the same with my calipers. I use muriatic acid a bit diluted with a brass and plastic brush. I rinse with baking soda water. This was a quick clean up.
The sand can sometimes just be a bear to get completely out of everything.

 

Okay, curiosity is killing me, what's the purpose of the hockey pucks on the brakes in LAFireboyd's picture? I don't have those. I cut the bolts short and wondered why they were so long in the first place. Guess I now see why the bolts were long.

 

My understanding is that they were to dampen "minor" vibrations felt on the thirdgen PBR set ups. I just took 'em off for mine.

 

Yeah I could see were it would be a pain to get all the sand out. I may have to try the muratic acid trick.

 

The Brake moan maybe? There was a tsb in 89 about it, the backing plate was changed to a thicker part then the dampeners were added later. Late 91 and 92s got them but not sure exactly when they started..
They changed location for the 93-7 cars but not exactly sure when on those.

 

So what emergency brake cables are people using with the lt1 rear calipers.

 

89-92 e-brake cables. It's the same caliper

 

Thanks

Started sandblasting the calipers I have one side done. Just trying to figure out if I wanna leave the caliper natural or paint?

 

I like the idea of paint, either color coordinated or matte clear, to keep the cast iron pad abutment brackets from eventually rusting, and keep the aluminum calipers from eventually getting ugly again.

 

Im gonna do the brackets and hardware in flat or satin black. Still not sure on the caliper it self. Thought about just aluminum natural color.

 

 

Finally got the calipers rebuilt. Next is get some rotors and mount them on the rear axle.

 

How do you clean all the sand and dust residue out of the oil passageways? I've never looked inside of a caliper, is it just straight drill galleys or is there a more complex shape inside?

 

I used my air conpressor. There is nothing hard about rebuilding a caliper. Its just a few dust boots and a square cut oring that fits in a goove that you piston slides into. To remove the piston from the caliper use a compressor. But be careful removing them cause they can and have shot across the room.