Video of spinning my front left wheel off the ground..

[lolife99]

If you used 71-72 spindles,... you have to use 1-1/4" rotors, bearings and matching calipers.
Calipers can be the 73-80 version,... but they have to be for the HD 1-1/4" rotors.

[oldblue1968chevy]

So pretty much it'd be impossible to use the 1" rotors.

[oldblue1968chevy]

Bump, my buddys squarebodys wheels spins alot better than mine..Any other opinions?

[BMERDOC]

Pull the pads out and measure the thickness of the inside vs. the outside pad. If the outside pad is thinner the caliper isn't sliding back on the bolts and is constantly maintaining pressure. If the inside pad is thinner ( you said the rotor is grooved inside) then the piston isn't returning or something isn't letting it return. You can rotate the piston in the caliper, then squeeze it back in and it MAY free up. Make sure the brake hose is not twisted (the painted line on the hose must not be twisted). Follow the hardline back to the valve making sure it isn't dinged anywhere acting like a check valve. Then its onto the proportioning valve...

[dznucks]

My front wheels have always been like that. I have an ECE drop spindle and disk brake conversion. I started a similar post years ago and I was led to believe that it was normal.

I'm not saying its right. If its not, i'd like to know how to fix it.

The groves on the back side of the caliper should line up with the rivet holes in the pad. That's normal based on my experience.

Someone mentioned the caliper bolts...make sure you gease those up so the caliper can float freely.

[oldblue1968chevy]

Im getting tired of buying parts over and over lol

Mine seems (may be imagaination) to make alot of brake dust?

[Dunenutt]

Originally Posted by oldblue1968chevy

Im getting tired of buying parts over and over lol

Mine seems (may be imagaination) to make alot of brake dust?

If you are using Autozone pads, they will eat rotors bad, and dust horribly! Go to O'reileys, and get Performance Friction pads. They cost a little more, but are worth it.

[oldblue1968chevy]

Im pretty sure there autozone pads, I know they are autozone rotors

[BMERDOC]

If the caliper is locking up it will dust a lot more. Is the dusting even on both sides of the truck?

[Dunenutt]

Originally Posted by oldblue1968chevy

Im pretty sure there autozone pads, I know they are autozone rotors

Autozone pads usually have red backing plates. Autozone also sells cheap rotors. If you don't recognize the brand name on the box, they are usually junk import rotors.

[oldblue1968chevy]

I'll look at my recipets and tell ya whats what later this eve.

The dusting could be normal, I dont know.

I would say the dusting/locking is even on both sides

[CharlesUFarley]

I haven't had disc brakes apart in quite a while, but is there a way to shim the caliper toward the control arm a bit? or maybe have the rotor turned on the inside so it is a few thousanths smaller on the inside for clearance? Obviously there is inteference between the inside of the rotor and the brake pad. If worse comes to worse, I wonder if there would be a way to put a shim between the inner bearing race and the rotor. That would hold the rotor outboard by the thickness of the shim. You would probably have to have the shim machined, but it might work.

[oldblue1968chevy]

Ok, was under the truck awhile back, noticed the braided NEW soft lines WERE infact twisted.

Can the twisted lines really cause binding??

[jbice70gmc]

Does both front wheels have the drag and wear on the inner side of the rotor or just the one in the video?

[oldblue1968chevy]

both wheels do it

[oldblue1968chevy]

pads

[oldblue1968chevy]

mo

[fastwillie 696969]

rotors look like there grooved ,did you check run out ,what does the outside pad look like on the surface.

[oldblue1968chevy]

Yeah, super grooved inside and outside.

Whats 'run out'

And what would the outside of the pad matter (jw)?

[oldblue1968chevy]

BMERDOC-My soft (Braided) hoses ARE twisted, doest that REALLY make a difference?

Hmmm

Thanks! Keep it comming, (still havent fixed it)..any others with this problem

[firedog]

Have you checked to see if rotors are warped?
Posted via Mobile Device

[SCOTI]

Originally Posted by oldblue1968chevy

BMERDOC-My soft (Braided) hoses ARE twisted, doest that REALLY make a difference?

Hmmm

Thanks! Keep it comming, (still havent fixed it)..any others with this problem

Hydraulic fluid must freely flow within the line. The force of your foot applying pressure might be enough to overcome the 'kinked' line for stopping but there would be nothing allowing the same type of low once the pedal is lifted.

Un-kink the hoses, replace the rotors, & get new, better quality pads.

[oldblue1968chevy]

Hmm..

I'll start by trying to unkink the hoses

Thanks guys.

[oldblue1968chevy]

OKAY-I can pry the piston in the caliper BACK into the caliper and they'll free up and spin nicely. I cracked the bleeder on the caliper and it didnt seem to really release? HELP

All the parts are under warranty lifetime, Ive got a new MC and calipers comming in the AM

[b a king]

hello i think your problem might be that your rotors are grooved. the pad is riding in the groove. you may have said but when or did you have rotors turned?also put a LITTLE grease on bolts and the sleeves. very little just enough to lube . maybe not grease but w.d 40. DO NOT GET IT ON PADS/ ROTORS. , caliper needs to be able to move freely. hope this helps . be sure to have rotors turned. cost a lot i know! good luck