Scott, thanks for the advice , the rear calipers are such as big as the front , when I will be make a test run/brake I will be warned.
It will take a few weeks before the first run , I build up a unfineshed project and was missing some parts.
And time flies.
Simon
When you upgrade the front and rear brakes, you would naturally put an adjustable proportioning valve in the rear line, so you can dial out excess rear braking. As Scott mentioned above, you NEVER want the rears to lock-up before the fronts.
VERY GOOD AND LOGICAL INFORMATION
Improving the Pantera's brakes, an inexhaustible subject.......
I understand that at the time it was fashionable to install two stock rear calipers per wheel; this solution is currently cheap because it is easy to find cheap original rear calipers. Has anyone here tried this and what do they think?
I recall people doing this in the early '80's. The benefits were cost, ease of installation and it retained the OEM parking brake. The downside was weight. The bracket that mounts the OEM rear caliper is needlessly heavy. I remember people filling those brackets full of holes in order to reduce the weight. Things got complicated too, if you had larger than stock rotors. Nowadays, it seems like an impractical mod. when you can simply call Scott and buy a pair of 4 piston Wilwood calipers that are better in every way than doubling up on the OEM stuff.
This is off the hydraulic discussion, but are you using stock brake pads?
although the brake pads are not the originals, that were fine until I changed them. I believe I bought the stock equivalent from PI, but don't recall an improvement in performance, as that's what I was hoping for. All this talk would have been unnecessary if I hadn't driven that damn Ferrari, but now that I know what I'm missing, I hope to do better.
Reminds me of my first girlfriend. If I hadn't looked at other girls, I would have been very happy with her.
You may do yourself a great sevice just by throwing the stock pads away and replacing them with aftermarket units , specifically from Porterfield. Hated my stock brakes until i did that upon recommendation of other members. Any one else here use the Porterfield R4-S and AP63 pads?
I think I have done all this…. Porterfield R4S pads (or is it RS-4), dual stock rear calipers (which I could inadvertently lock up before the fronts), replaced with SACC upgraded rear calipers, then a SACC Wilwood MC upgrade.
Finally got what I was looking for, but I haven’t really driven much else like my Pantera on the track, so hard for me to compare!
Rocky
I cannot see this , because mine is dismantled.
Simon
You can point a camera at the end of the valve with the dust cap removed and record video to see if the piston moves when you stand on the pedal.
Can this proportional valve be opened without complete removal from the car?
maybe it should be removed for a rebuild?
You will need to take it out of the car for a rebuild. I takes some effort to loosen the large nut and to drive out the piston if it is frozen.
Mike Drew posted this a few days ago on the email forum.
I already post this here 11/7
Simon
you did. oops.
