Help ABS Brakes 2nd Gen
 

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OK,

I posted some info last week regarding my brakes. 88 10AE

I think that a leak has been found in the ABS system - the unit that sits close to the firewall on the passenger side

I understand that these units are not cheap. True?

Are they rebuildable?

Is it worth locating a used one?

Should I bypass this unit?

Any similar experiances?

[QUOTE=10year7]--------------------------------------------------------------------------------

OK,

I posted some info last week regarding my brakes. 88 10AE

I think that a leak has been found in the ABS system - the unit that sits close to the firewall on the passenger side

I understand that these units are not cheap. True?

Are they rebuildable? (Check your local dealer for any rebuild kit.)

Is it worth locating a used one?

Should I bypass this unit? (I would, to buy me some time until I could relace the unit)

Did you by any chance check with any wreckers?

They are 2500 USD each New

They are no rebuildable. I asked around everywhere for 2 years in hopes of finding a place that can rebuild them. Cloest I came was cardone industries, they rebuild a lot of OEM brake components for almost all cars. They said they can rebuild them at the cost of 900 CDN with your core, the person who I spoke to over the phone did not have much knowledge about Mazda ABS systems so he gave me a second technical number to call which I never did.

No, any used/old ABS pump in North America would have been subjected to the same heat from the turbo roasting it. The only hope to find a good used one is if you can locate one in Japan. THe ABS pump is on the other side of the car (Driver side for north america, as the steering rack goes through the passenger side on jdm cars).

I bypassed my unit. I ordered Non ABS hard brake lines from the dealers. The most expensive line was 17 CDn I think, and the two toher ones you need are 8 and 11 bucks each (if I remember correctly). Doing it this way removes the need for you to have all the lines in the passenger side of the engine bay. You will need to T the front brake output off the master cylinder with either a double banjo bolt, or a T from canadian tire/mazda dealership/mazdatrix. The ABS system worked pretty good, but in the end trying to rebuild that system with marginal parts (I wasn't going to spend 900) gets to be a headache.

Also... budget for a new master cylinder while you are at it. My started to leak internally after I redid all the hard lines and had to bleed the system extensively. While you are at it you might as well replace the soft brake lines (either SS or mazda OEM) and look for rusty hard brake lines.

If you do a search in the 2nd gen forum there is an excellent thread with the part numbers for the hard brakes lines and the banjo bolt dimensions. I used that thread to do my bypass.

Cheers,

Converting the car to non- ABS is what I am thinking. I understand that if I replace the Master Brake Cylynder with a non ABS unit than I would not have to T the output off the original ABS MBC that is in the car- make sense?

Thanks for your inputh

lucky for me aside from dirty sensors I haven't had aproblem with my ABS! yay for low miles. :)

the ABS went on Jordan's car, he told me it cost him $400 for a new ABS pump. this is about 2 years ago now (maybe even more!).

That is correct. But becareful. Turbo cars have bigger master cylinders than NA cars I think. I used a mazda 929 master cylinder which has the biggest bore out of all the mazda cars, I bought the ABS version which required the T howerver.

The S5 TII master cylinders were cast aluminum which is nice since it doesn't rust out like the other rx7 master cylinders. They came in abs form only i think, so u will need the T.

Was the 86-88 Turbo not available without ABS?

If I order this part and get the required lines is there anything else required?

Thanks

You can just get the part number of Starscream's Master since he did the same thing and it works.

hrm... that's it. Lots of rags, paper towels (and I mean lots!!!), some flare wrenches (a must). Propane torch, gloves, goggles, good brake fluid... and that should be it. It's pretty straight foward. Don't over tigthen any of the fittings, especially at the calipers and master cylinder.