^ I have a 94, and I noticed in my friends 93 that his are backlit red. My 94 however is not even backlit at all.

 

The condensers are differant as the 93's were R12 while the other years were R134. The condensor was increased in size to compensate. I have a parts manual somewhere, I believe the 95 condensor was ANOTHER design as well that improved on the 94.

Another thing to note, the early 92/93 production FD's recieved forged control arms while the late 93 and 94+ are cast aluminum

I dont quite understand the bracing differance you mentioned on the IRS, can you post a pic? Mine has the 2 alu braces going down the tunnel, if that is what you were referancing.

I know that in the 99 models the power steering pump was improved for a firmer variable assist. I was trying to track down one of these pumps but never got my hands on one.

 

You mean the ***** aren't backlit, right? Sounds like your '94 is just like mine...

 

I have seen '93s with the "window" on the AC ***** light up bright red, and the '94+ light up off-white. The dash lighting in general is different - the '93s are more red.

I have a customer with the weird passenger seatbelt buckle - didn't know that was stock! I thought his seatbelt had been replaced at some point with the wrong part. That thing is SUPER bobo!

On the AC lines - as far as I know, there are about 3 AC systems. The Japan-installed Nippondenso system the US port installed MANA system, and the '95 R134a system. Only the '95s had 134a refrigerant. The parts from the 3 systems are not interchangeable - that's probably the problem whoever had with switching condensers out.

Ramy, on the seats - I've noticed the leather and cloth seats "sit" a lot differently. The leather seats seem to be quite hard to get all the way back, too. That may be part of the difference you're seeing.

Another small difference - '93s had the chrome fasteners for the upper intake manifold, TB, and throttle body, '94-95 were just a greenish black fastener. Mazda saved some money there .

Dale

 

Those mentioning ***** that arent backlit should check your bulbs... most likely they are just burnt out.

My lighting is very consistant in my 94, it is a smooth amber all across.

the intake fasteners I've seen... when I first saw a 93' I thought that someone lost the original bolts and replaced them with chromies, but later saw more 93's with the same ones. Mine are the green/black alloy ones.

 

Has anyone noticed that on the 94's UIM and throttle body the nuts aren't chrome as they are on the 93’s? I thought someone had replaced mine with regular greenish nuts because on my old 93 they were chrome and on my 94 they were greenish. Called Ray and tried to purchase new ones and was told that they don't make them any more for either year, and if you try to order them you will only get the greenish ones for the UIM. They still have the chrome ones for the throttle body, so if you don't have the chrome ones then you might want to find you a 93 to get them off. I had Ernst at www.Rx7world give me some off of one of his cars; Thanks Ernst (great guy)

 

Supposedly 1993-early 1994, the driver's side motor mount is aluminum, and could cause an oil-pan leak. Late 1994+, the mount is steel like the passenger side:

Taken from:
https://www.rx7club.com/showthread.p...0&page=1&pp=15

TECHNICAL UPDATE


Have you ever noticed that most 93s have an aluminum motor mount arm on the driver's side and a steel mount on the passenger side? Well, according to Ray Crow, Mazda switched from the aluminum driver's mount arm to the steel arm in late 1994 because the aluminum was causing oil pan leakage problems. Ray couldn't recall exactly what the issue was that led Madza engineers to change it up; he stated that it had something to do with a clearance problem, or perhaps the thickness of the mounts had something to do with it creating leverage on the pan (<-speculation).

 

Actually Dale, there's a healthy mix of R12 and R134a equipped '94s... Apparently the changeover was implemented somewhere in the middle of production. I've seen a few 94s w/ R134a (original), and my '94 has R12.

Not just the movement Dale...but I could SWEAR that the R1 seat's padding is HUGE compared to my R2 seat padding. And it can't be from wear, as my R1 has 105,000 on her, and my R2 has 91,000.

Yea we know all about those don't we Dale? You can always just polish or even chrome the greenish black ones...they're metal

~Ramy

 

I'm sure they either changed the process slightly or the paint used. But the ***** are the same - it's merely a difference of how opaque the paint is. The lights are there on all years.

 

Would a change in the paint process account for a clear lens over the light in the '93s, but a solid line in the '94s?

 

Yes - such as painting over the clear lens with paint that's more opaque than it should be.

Take the thing off and check the back of it - 20$ says there is a lens.

 

I believe you...just surprised, that's all Mike's FD is a 94, and his pic showed them lit.

 

Improvements in the 94/95s that I didn't see mentioned:

the rear sub frame has additional support

much nicer glove box

have more interior insulation in the doors, floor etc...

ABS pump is different hopefully for the better

Gas tank slosh system improved

auto down drivers side window switch

and I'm sure there are many more things we are forgetting

IMO the 94/95s are much nicer in terms of build quality etc.... For some reason they just drive with less rattles and feel more planted and sound when driving.

 

Yea when you take a REAL close look Fritz, there are a ton of differences. I was just curious if the two I noticed were real or in my head

~Ramy

 

Both of my engine mounts are the same, although at 19k my motor mount was replaced at the dealer (previous owner). They both appeared aluminum but it has been quite awhile since I looked at them.

Another MINOR change among that many to the tan interior was in the floormats. The embroidored "RX-7" on the 93' models is in a matched tan color while the 94+ tan interiors had a black text on the floormats.

 

I've taken a bunch of these cars apart and put them together. Here's what I've seen, some might have been mentioned before.

In 94 the rear subframe was changed. Basically they added a bracket and a bar to the braces that are already there to triangulate everything. If you can find the braces you can just have a shop weld up a bracket instead of changing the entire subframe.

The aluminum motor mount was on the driver's side of 93s. It was a very weak design with the rubber just vulcanized onto the aluminum portion and no bolt actually passing through it. This mount always breaks. Mazda started using the stronger passenger side mount on both sides.

As far as the climate control *****, I haven't noticed a difference but I have seen the painted white potion that is transluscent fade and become more clear. Maybe this is the difference you are seeing?

In 94 Mazda added a piece of styrofoam glued to a thin metal bracket that bolts to the inside of the door skin. This is why the 94 doors feel alot more solid when they are slammed shut. You can accomplish this with a piece of dynamat. F the weight, really who cares. In my opinion most of these cars feel like pieces of garbage with all the creaks and rattles. This is why I dynamated the majority of my interior when I had my rx-7.

The passenger seat belt- I beleive it had something to do with the passenger airbag being added in 94 or something with proivisions for a child seat.

The bose center amp was moved from under the passenger side of the dash to under the center councel in 94 because of the different glove box design.

Im sure there's more I'm forgetting now.

 

yup, someone pointed this one out earlier i think, if not than i know for sure that this is valid

 

How I understand it is that the 99+ models have added a restrictor valve that cuts down a bit on the power assist to the steering.

 

Very minor difference I noticed between my 94 and my friends 93. The button for my hazard lights is a bright red plastic, his 93 is a darker metalic looking red. Not sure if that is the case with all of the 93s or not.

 

Just bringing this back up from the dead b/c I recently sat in my friend's '93 R1, and I *immediately* felt that I was DEFINITELY sitting a considerable amount higher in the car than in my 94 R2.

~Ramy

 

Well, being a vertically challenged SOB, I am happy as hell that I ended up buying a 93 R1

 

thread from the dear!


just saw some1 posted in the for sale section and said that 94 got a passenger airbag and better abs system over the 93? truth? are they interchangeabel?

also if i wanna use r134 with my ls1 compressor, i guess i need to look for a 95(impossible to find) condensor or get one frmo the dealership? can anyone show me a pic of one an dhow it mounts.....

 

damn, i was actually in the process of trying to buy a 93 rx7 when i saw this. now im wondering if i should keep lookinf for a 94/95

 

Since we're mentioning all the changes...

94's had improved the cooling system. (Different pressure caps, redesign of the fill/thermostat area).

And I agree, 94's just feel more solid than 93's do (less rattle and squeaks). Could they have improved build quality in one year?

 

someone needs to make a writeup on insulating the 93s. ie: what to use to make it like the 94-95. i hate my 93