Outer Limits 4x4 Board

Had the same issue in my hard top.... scared the hell out of me but no-where near as much as my passenger!!

I ended installing a Wilwood proportioning valve which made a HUGE difference. At least now when I slam on the brakes the fronts lock-up.
For $70 (i think....while back now) it a small price to pay for peace of mind.

The proportioning with the subaru cylinder on the cars I have been involved with seem to proportion very well, however, these cars run sierra front calipers on the rear, not skyline (or any other) calipers.

In fact, Greg has a proportioning valve on his and I believe he runs the valve fully open- there was no need for it.

A "normal" car will never run the same calipers front and rear, so with a normal disc/disc cylinder, there will be significantly less fluid going to the rear, so the proportioning seems to be good.

With a smaller rear caliper, it's quite possible there will be excessive rear brake force without a prop valve.

PS If you run 16" rims, consider the 2.0 vitara front brakes - they are a MUCH larger, ventilated disc and matching caliper.

Steve.

Steve, I have the LWB vented up front and also sierra rears.

Could be an advantage to my setup hmm

Cant comment on the skyline calipers or subaru m/c . I'm running sierra calipers front & rear with a normal sierra m/c & found it was biased to the rear.
I've got the proportioning valve set at it's minimum & it seems to provide a good balance.
However, in say that I had to take into consideration the stupid amount of weight transfer that occurs when I forcefully apply the brakes.

Reading on izook the prop valve they sell starts at somthing like 70% - 30% bias not sure if they are all the same.
I think the outback I got my m/c from had discs all around but I run disc/drum.
Im going to try to get a prop valve installed Im sure that will help alot.
Nik

Im just in the process of doing this conversion atm , but when i took the subaru master cylinder off the car i forgot to see which brake line goes to the front and which goes to the back ?

So can someone confirm which line goes to which axle ?

Cheers
Jamie

Mines not finished yet but they are the same as the sierra ones, the hardline closest to the firewall goes to the front of the m/c and the front hardline goes to the rear of the m/c.
Buy the way I got my prop valve and I pick up the new lines tommorrow to adapt it so I,ll report how it goes.
Nik

i just did the 1 1/16" master swap from a subaru liberity. the lines are on the opposite side (closest to guard)

i had to lengthen the pin by 31mm

i didnt notice any increase in braking performance at all with the swap.

im running hi lux 4 piston calipers up front and drum rear

From what Ive read (not alot ) if its 1 1/16" and has 2 outlets it should be ok.
11_evl yours is a newer zuk? I think greg said somthing about newer ones been different, but then I saw on zuwharrie that on 88.5 up?? it wont bolt on??
Nik

yes mine is the newer booster which means i needed to extend the push rod a bit more. it shouldnt matter what yr it is the brakes should work.
the pedel firmed up a bit but that could of been cus i flushed fluid.
the master bolted on no problems. it is the same master as all the pictured one (1 1/16) but the outlets are on the opposite side to std sierra ones, i had to bend the pipes

Joe & Steve

When your talking 2.0L Brake parts are you talking 4 cyl or V6??

I would have thought that the J20a Brakes would be very simlar to the Estate ones?

AFAIK J20 and H20 run the same brakes. The rotors will not clear 15\" rims though.

Steve.