Disc Brakes in... Need a proportioning valve.

[IH8RDS]

I just took the pin and spring out of the junk yard ZJ with V8 and put them inside my existing block. Works like a champ.

 

[markw]

I just took the pin and spring out of the junk yard ZJ with V8 and put them inside my existing block. Works like a champ.

Makes a difference eh?

 

[Clean Racing]

Ok here is to add to the tech of this thread.. I finally took a pic of the three prop valves all apart.. ZJ on top, XJ middle, and WJ bottom..

HERE...

 

[xj_mike]

So, do you have to drain the MC before removing the cap/spring or can it be done while it's still full? Does the fluid pour out or just dribble?

 

[Clean Racing]

So, do you have to drain the MC before removing the cap/spring or can it be done while it's still full? Does the fluid pour out or just dribble?

The last time I did it, I did not drain the master and put a cup under the prop valve to let the fluid run into.. I will dribble out at a good rate.. Obviously rebleed the system after the swap..

 

[saki669]

The last time I did it, I did not drain the master and put a cup under the prop valve to let the fluid run into.. I will dribble out at a good rate.. Obviously rebleed the system after the swap..

Just when you thought the thread was dead.....

Scott you da man. Quite a difference under hard braking! With the new spring the 35's only lock up just before the XJ stops. Its great.
I think some nice high friction pads / rotors in the front would help a lot also but I am happy with the disc swap so far. Seat of the pants estimate is probably 25% more braking power. The big difference is the panic stopping. It actually stops now.

Down with Blazair and his negativity.

 

[desertracer]

Lameness still doesn't begin to describe this Kirk guy. What a loser.

 

[Blazair]

Lameness still doesn't begin to describe this Kirk guy. What a loser.

X2. Seat of the pants, 25%, whatever! "Beam me up Scotty!" "Set your phasers on stun."

 

[dgrigorenko]

ok random thought on this... would it be possible to trim the xj spring to get the same spring rate as the zj one? or is the zj one actually have a higher/same spring rate as the xj one but just shorter... i just did this swap, and am having a heck of a time tracking down a prop. valve so i'm looking for other options besides taking the oring out

G

 

[markw]

The ZJ spring is thicker wire, and quite a bit stiffer, I doubt it. Pick A Part or Ecology, 2 3/4" wrenches, and a rag to wipe it off.