John Cunningham
I'm Awesome
I know quite of few forum members thought that is was a waste of time to convert to rear disc brakes.
I reported what I found with a much improved pedal feel. Nos so hard of pedal etc.
I have driven this for several months and contemplated to going to bigger rotors and 4 piston etc because I thought it should be better than what I was feeling but have been too busy to do anything about it.
However I knew I did not do anything with the disc/drum master cyl and I knew that was not right.
So I decided to check the caliper pressures knowing that the rear and fron should be about 1000-1100PSI
Mind you that this is a K3500 with a hydroboost.
I purchased a pressure gauge and checked it and found the rear disc was only 475psi and the front was only 675 psi
I was shocked and happy at the same time.
I installed a new disc/ disc master cyl with a 1 1/8 bore which should be correct for the conversion with no residual or prop valve.
I installed the new MC and the readings are now 1050 in the rear and 1100 psi in the front.
I took it for a drive and was delighted as it feels like a newer truck with a very nice normal feeling pedal and unreal stopping power from what I was experiencing.
No more hard pedal feeling and no more dull feeling pedal. It has the feel you should expect a truck to have even though it was an older truck. To me 4 wheel disc brakes should feel the same on any year truck because the brakes do not know a thing..
It pays to check things more closely and the pressure gauge told the story.
Converting to Disc Brakes all the way around with a new correct MC with the correct bore size changed this truck stopping power 100%
I let a buddy of mine drive it who has a 2015 GM 3/4 ton and he says it feels and stops as good as his truck
Best thing I have done to the truck as far as safety is concerned.
Go ahead naysayers and attack!!...but for those who want to do this conversion I would be happy to share info
I reported what I found with a much improved pedal feel. Nos so hard of pedal etc.
I have driven this for several months and contemplated to going to bigger rotors and 4 piston etc because I thought it should be better than what I was feeling but have been too busy to do anything about it.
However I knew I did not do anything with the disc/drum master cyl and I knew that was not right.
So I decided to check the caliper pressures knowing that the rear and fron should be about 1000-1100PSI
Mind you that this is a K3500 with a hydroboost.
I purchased a pressure gauge and checked it and found the rear disc was only 475psi and the front was only 675 psi
I was shocked and happy at the same time.
I installed a new disc/ disc master cyl with a 1 1/8 bore which should be correct for the conversion with no residual or prop valve.
I installed the new MC and the readings are now 1050 in the rear and 1100 psi in the front.
I took it for a drive and was delighted as it feels like a newer truck with a very nice normal feeling pedal and unreal stopping power from what I was experiencing.
No more hard pedal feeling and no more dull feeling pedal. It has the feel you should expect a truck to have even though it was an older truck. To me 4 wheel disc brakes should feel the same on any year truck because the brakes do not know a thing..
It pays to check things more closely and the pressure gauge told the story.
Converting to Disc Brakes all the way around with a new correct MC with the correct bore size changed this truck stopping power 100%
I let a buddy of mine drive it who has a 2015 GM 3/4 ton and he says it feels and stops as good as his truck
Best thing I have done to the truck as far as safety is concerned.
Go ahead naysayers and attack!!...but for those who want to do this conversion I would be happy to share info