tzbfwt

iTrader: (1)

yes - I did search. I found this Jimlab post for a what's different 93 to 95 thread:

>>And a more advanced ABS unit (the original was replaced mid year in 1993, and again for 1994-1995, then again for 1996), and additional bracing in the rear subframe. A 1994 or 1995 is also more likely to have had all the recalls performed, and they changed the wheels mid-year in '93 to replaced the ones that tended to crack. But other than that... <<

My 93 has a 6/92 Manf date - do does that make me an early 93?

So - does anyone know if the brake lines and electrical connection in a 93 will mate up to a 95 ABS unit??

My 93 ABS unit is leaking - I assume they are NOT rebuildable by meer mortals?

HELP !

TT_Rex_7

If you search around through some of his threads/posts (jimlab), he's posted a picture of his abs unit and if I recall right, they lines were in diffrent locations. I'll see if I can find the thread real quick...

-Alex

tzbfwt

iTrader: (1)

Found this thread on rebuilds - thx DamonB

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/rebuildable-abs-unit-possible-267298/

can you buy an rebuilt? ABS unit at Autozone, etc - or is it a dealer only part?

God help me - but what does a new one cost?

TT_Rex_7

The pictures are kind of distant, but you might get somewhat of an idea by lookin at pages 216-218. I'm sure if you just scan through some more pages in the thread he should prlly have more pictures of it in the car.
https://www.rx7club.com/showthread.p...light=abs+unit

-Alex

tzbfwt

iTrader: (1)

there is a Jimlab thread somewhere that talks about the last 95 imported - blah, blah, blah - and then he posts pics of his 95 ABS unit - and how different it is from other 95s??

come on - someone has to know this one - I'm sure the ABS part number changed from year to year - but did the brake line or electrical connections really move - or were all the ABS changes internal??

TT_Rex_7

Look at your abs unit and then look at his pictures. I dont see whats so hard about that. If the lines lead to the same spot then they will line up. PM him for more info about the connections and what not.

-Alex

DaleClark

iTrader: (55)

It's very hard to say without bigtime studying the two systems. The '95 unit is smaller, lighter, and simpler, but will be VERY hard to even find one, and there's no guarantees that the wiring and ABS computer would work the same.

It would most likely be far simpler, easier, and cheaper to get a good used '93-94 ABS unit, or find someplace that rebuilds ABS units. Actually, I bet it's probably not hard to find a good used one for a fair price.

Dale

books

iTrader: (8)

I have a 95. I believe the brake line routing to the ABS looks a little different from the 94 I used to have. Although I am not certain. If you need a pic, I could take one tomorrow and send it to you. Just pm me your email address.

books

iTrader: (8)

You could call Ray Crowe at Malloy Mazda and ask him if they are interchangeable.

DaleClark

iTrader: (55)

OK, definitive answer time.

I've got a '93 shop manual, and the full '95 dealer manual with the service highlights. I just sat down and compared the two.

The brake lines themselves look to be routed in a similiar fashion - that's not a biggie. The biggie is they BIG TIME redid the ABS pump.

The '93-94 pumps have 3 solenoids - one for each front wheel, and one for the rear wheels. These solenoids are what modulate the hydraulic pressure. The '95 pump has *SIX* solenoids - two for each front wheel, and two for the rear brakes. For each circuit, there's 2 solenoids - one that basically opens, and one that closes.

The ABS control unit is also substantially different, as it has outputs to control all the extra solenoids and new logic to control the different function of the extra solenoids. Also, on a minor note, the method with which the ABS light on the dash is lit for the test sequence is different - different wiring design.

To pull this off, at minimum you'd need the '95 ABS pump, the '95 ABS computer, and the electrical connectors. You'd have to run new wiring to allow for the extra inputs to the ABS pump, and sort out the different wiring for the ABS light on the dash. Major job.

Unless someone found a SUBSTANTIAL difference in performance or quality of performance with the '95 ABS unit, this just simply isn't worth it. Not to mention the cost and difficulty of locating the '95 components, as there were only 500 '95s in the US, and ABS pumps and control units are typically RIDICULOUSLY expensive from the dealer.

Again, you're way better off having your unit rebuilt or find a good used unit. Fix the problem and go.

Dale

DMRH

No, it makes yours a mid 92.

tzbfwt

iTrader: (1)

I should have been more clear - is 6/92 considered an early or late 93 MODEL YEAR?? - 93 Vins were the first 3rd gens imported to the US. I think the date is important because the ABS unit may have changed during the 93 model year.

tzbfwt

iTrader: (1)

Ok - thanks for the research Dale

I have the opposite problem - I found a good deal on a 95 ABS unit - but it looks like it won't fit my 93.

not looking to upgrade my entire ABS system- just need to replace my leaky 93 unit.

so anybody got a good used 93 or 94 ABS unit?

I'm going out to the garage and taking a pic of my 93 and I'll post it today.

thanks again for the shop manual digging

Jim

FDjunkie

Here's a closeup of the ABS unit on my '95; according to the VIN its one of the last 250 or so imported. Maybe it will help answer some of your questions. I have no idea about the electrical connections, etc.

93silverbullet

iTrader: (7)

I have the same problem (leaky ABS Unit) on my 93 and have done an exhaustive search trying to find a way to have it rebuilt or buy a good used one (good luck finding one!). I have even tried rebuilding it myself using a used one I bought off ebay, the end results were that it didn't fix the leak. I have resigned myself to buying a new one from Ray at Malloy (other dealers want $2400.00 list for it! That's right... $2400.00). Ray said he would sell it me for about half that price. I'll be ordering mine in March, since the car is up for the winter anyway .


Good luck!

kuroi FD

you could always take out your abs right?

DaleClark

iTrader: (55)

I can't imagine it's that hard to find a good used ABS unit. PM Fritz Flynn - I bet you a nickel he can take care of you.

Dale

tzbfwt

iTrader: (1)

here they are - tried to get good shots of the lines and the electrical connectors

there are two connectors - one is a beefy, appears to be 2 conductor (probably power) and the other is an orange 10 pin connector - shown unplugged in one of the photos

oops - files too big, will have to cut them down and post in a minute

tzbfwt

iTrader: (1)

try again:

tzbfwt

iTrader: (1)

UP

well my 93 ABS PUMP sure looks different than the 95 posted above

anybody know if there were wiring or brake line changes between 93 and 94?

Looks like I found a used 94 ABS unit - will IT work?

thx

Jim