Have You Upgraded Your Brake System?

[jordan]

Dave, what are those wheel cylinders listed to? I still have the 3/4" lemans from that trial that never panned out, is this a different idea?

[GoinManta]

More pictures of the rear isuzu brakes and axle... What you all think?

[soybean]

Looks very good Charles. I'm impressed. Good documentation too.
Jarrell

[69GTLEE]

Rear disk brake from Toyota MR2
I copied a wilwood bracket
It took an afternoon and cost $45

[asdasc]

69GTLEE, could possibly start a new thread on your disk brake conversion from the MR2, or write a short tech article with any drawings and pictures of parts, installation, and brackets you made? This sounds very interesting.

Thanks,

[GoinManta]

Looks very good Charles. I'm impressed. Good documentation too.
Jarrell

Thanks.. I noticed I forgot to take pictures of the Drum setup installed.

Since I have to take one side apart anyway to install a missing piece (thats on order from Isuzu.. believe or not they had it available..)

Speaking of which.. does anyone want me to ask the Isuzu dealership how much the "Dealer components" (Backing plates, ebrake assembly, and ebarake cable) would cost and if available, then this woudl be a purchaseable upgrade not a Part-a-Part one.

Charles

[GoinManta]

Speaking of which.. does anyone want me to ask the Isuzu dealership how much the "Dealer components" (Backing plates, ebrake assembly, and ebarake cable) would cost and if available, then this woudl be a purchaseable upgrade not a Part-a-Part one.

Charles

Well I did anyway... and OUCH.. $800 for Just the dealer parts (This includes the backing plate, hardware, shoes, and ebrake cable). That doesnt include the flex lines, calipers or rotors.

The vented rear disc like mine came on the 85' Impulse Turbo, if anyone wanted to surf to http://www.car-parts.com and get the setup off a junkyard. Usually less than $200 for everything used.

Charles

[GoinManta]

Since I started to hijack this thread, I guess I will finish on it..

here are some pictures of the ebrake assembly, AND a technical diagram. For any future Isuzu brake swaps.

I also threw some finished and mounted to the car pictures.

Wanted to mention a few things..

The Ebrake Cable is the exact length of the Manta cable so it fit perfectly.

The brake lines fittings are a match as well so the flex line connects perfectly to it no modifications needed there either.

Truly the only things I had to do were get the backing plate machined, the holes redrilled and put hardened 12mm washers over the lugs to space out the rotor from the backing plate. Otherwise it rubbs the backing plate, the Opel axle seems to sit a little furthur in than the Isuzu one did.

Your results may vary on a GT. I think from other threads the GT is a better match to the Non-turbo imuplse (non-vented rotor). Otherwise it looks to be about the same setup.

Charles

[GoinManta]

One more thing.. I just figured out (well more like rememebered after a failure).

There is a check valve in the rear line of the Manta master (at least the AC/Delco). You remove the rear barke line from the master and then remove the brass fitting. Behind the fitting is a spring and cup valve. Remove them. Replace the brass fitting and reconnect the line.

If you don't too much pressure builds in teh rear line and you will blow the seal in one of the calipers or both.

Charles

[show no go]

Just got my front brake conversion done. Used 1988 Volvo 240DL four piston calipers and 1988 Honda Accord rotors. The only mod needed is a slight machining of the center of the rotors to make them fit. Cost new/rebuilt for standard parts was about $100 and easy work.

One thing on fittment though is that it will NOT fit with stock wheels! Also the stock master cylinder will most likely need to be upgraded too. I didn't try with the stock unit but I am using one from a Mazda rx7 with proportioning valve.

I paid:
$ 30 for each caliper
$199 for EBC drilled and slotted rotors
$ 20 Machining for both rotors

Substitute rotor choices:
$ 19.95 each for standard rotors at Champion Auto
$ 149.00 each for BAER drilled rotors
$ 154.00 each for Brembo drilled and slotted rotors

[Phoenix]

My Uncle and I are currently doing the 75 model brake upgrage with my front suspension overhaul. I intend to change the back to disc later on.

[crliwa]

Ok Now it's time to address the issue of rear brakes for the
Ascona that is here in Chandler AZ. I mentioned to Dick that the most popular upgrade seems to be to Isuzu Impulse rear end w/ disc brakes.. Has anything changed ? Charles threads show that they are reasonably priced and everything I see seems to say they are good all around considering price and difficulty to install...
Has anything changed or has anyone found another way to go that is as good or better.
I'm also questioning whether the front (1975) brakes are going to be overpowered by the improved rear brakes?.

[blancojp]

I believe this thread is all screwed up.........

[gtzero]

I believe this thread is all screwed up.........

Why do you think that?

[blancojp]

Why do you think that?

Never mind, senior moment....

I forgot this was a poll and a few old comments.

[GoinManta]

I'm also questioning whether the front (1975) brakes are going to be overpowered by the improved rear brakes?.

I know its a old Q.. but no the Isuzu rear discs don't overpower the front.. especially if you put a brake bias valve in

[opeletti75]

has anyone tried the greenstuff pads

[opeldean]

I have been using them for the last 4,000 miles. They are great. After putting on new stock rotors,flex lines lines, new fluid and greentuff pads... brakes are just fine for my needs. Car stops fine and I have no interest in any other brake upgrades. No squeal or other issues.

Somewhere , I read that they wear out fast.

Greenstuff pads are great.

[markandson]

I have Greenstuff pads on my car and they are fine, no complaints.

[SantaClaw]

Yes... I have done "some" upgrades to the brakes...

Hm.. Pink 240 bhp brake kit, with 4 brake disks, front\rear..

Rear calipers from Opel Zafira, handbrake integrated in the rear calipers...

Vented front disks, metal brake lines.. solid rear brakedisks.

Basically it's all brand new, and huge...