[net.auto] Questions about Mazda Rx7's

tjl@tekchips.UUCP (Terry Ligocki) (03/26/85)

I am considering buying a Mazda Rx7 (for various reasons) and I am
looking for the answers to some specific questions and peoples general
impressions.

I am most interested in the GSL-SE.  This is because it is the only
model with all the performance features.  I would REALLY like to get
one without the luxury features (sun/moonroof, air conditioning,
stereo, etc.) for a lower price but I haven't had much luck.  My first
question is:

  Is there anyway to get an Rx7 GSL-SE WITHOUT all the luxury features?
  They claim to come standard with just about everything.  Is there
  anyway around this (e.g. ordering through some kind of international
  concern)?  I don't know much about this and I would like to be better
  informed.  I not in a real time bind to purchase the car so I AM
  interested in all methods.

A close second is:

  What is the current state of Mazda's (the world's) rotary engine
  technology?  Mazda's rotary engine used to have seal problem (that
  could be fixed by countersinking some bolts, or so I was told).  Are
  there still similar problems?  Are there fixes (I am willing to have
  mods made on a new car)?

Now on to a specific technical questions (these grew out of comparing
the GS with the GSL-SE)...

  Of what importance is the 'performance-tuned rear suspension'?

  What are the advantages/disadvantages of a fuel injected rotary
  engine (vs. a 2-stage, 4-barrel carb)?

Finally, what are peoples general impressions of the Rx7 (and Mazda).
I really like the styling and the HP they get out of a 70-80 cu. in.
rotary engine.  Please reply by mail and I will summarize the comments
if it seems appropriate.  Thank-you one and all.

				Terry J. Ligocki

				tektronix!tekchips!tjl

cal@pyramid.UUCP (Craig Alan Levin) (03/29/85)

After owning 3 RX-7's ('79 GS, '82 GSL, & '85 GSL-SE) I feel I am
qualified to answer your questions.  We still have #1 & #3.

>>  Is there anyway to get an Rx7 GSL-SE WITHOUT all the luxury features?
>>  They claim to come standard with just about everything.  Is there
>>  anyway around this (e.g. ordering through some kind of international
>>  concern)?

Not in the US, and Mazda has made it difficult to "grey market"
any of their cars.  ( I would really like to get one of the new
Cosmos - Turbo 13B engine in a sedan).  You can special order an
S version and get an after market 13B engine.  That is as long as
you don't want to register it in California.

>>  What is the current state of Mazda's (the world's) rotary engine
>>  technology?  Mazda's rotary engine used to have seal problem (that
>>  could be fixed by countersinking some bolts, or so I was told).  Are
>>  there still similar problems?  Are there fixes (I am willing to have
>>  mods made on a new car)?

I have 101,000 miles on the '79 and it still goes to Tahoe every
weekend to go skiing.  The repairs have been water pump, clutch,
pilot bearing, U joints, and tires every 40K miles.  Of the over
a dozen people I have convinced to buy RX-7's instead of anything
else, none have had any internal engine troubles.  I have put
headers and removed the Smog pump from the '79.  It is almost as
quick as the '85, but does not have the same smooth power curve.

>>  Of what importance is the 'performance-tuned rear suspension'?

I have not noticed much difference in the rear suspension that a
good pair of Koni's would not fix.  But the limited-slip, not
available on the S & GS, is a must.

>>  What are the advantages/disadvantages of a fuel injected rotary
>>  engine (vs. a 2-stage, 4-barrel carb)?

The EGI system adds the smoothness to the power curve.  But much
more horsepower is available using weber configuration.  In Japan
they have a turbo version, called savanah, that may be here in
'86-87, but that depends upon the voluntary import quotas.

>>  Finally, what are peoples general impressions of the Rx7 (and Mazda).

Before buying my third RX-7, I looked at everything.  The only
cars I found that even tempted me were the Ferrari 308 and Lotus
Turbo Elite.  At 3-4 times the price of the GSL-SE, the choice
was more than obvious.  It was not only the offered features but
the cost of ownership.  When I traded in my '82 after 3 years and
35K miles I got back 80% of the original cost.

et@bmcg.UUCP (Eric Thune) (03/30/85)

> 
>   Is there anyway to get an Rx7 GSL-SE WITHOUT all the luxury features?
>   They claim to come standard with just about everything.  Is there
>   anyway around this (e.g. ordering through some kind of international
>   concern)?  I don't know much about this and I would like to be better
>   informed.  I not in a real time bind to purchase the car so I AM
>   interested in all methods.
>

    Not that I know of, but I think the options are well worth the price.


> A close second is:
> 
>   What is the current state of Mazda's (the world's) rotary engine
>   technology?  Mazda's rotary engine used to have seal problem (that
>   could be fixed by countersinking some bolts, or so I was told).  Are
>   there still similar problems?  Are there fixes (I am willing to have
>   mods made on a new car)?
>

    The rotary engines in Rx7's are known for their reliablity. A recent
    (within the last year) Road and Track had a report on an rx7 they
    had for over 77k miles. They claimed to have no engine problems
    whatsoever and further stated that the only time one of them got 
    stuck in the car was because of a broken steering wheel lock. The seal
    problem you are refering to had to do with the seals on the apexes of
    the rotors. This problem was solved long ago with the first rx7s. Also,
    the GSL-SE's seals are further improved for greater durablity for the
    increased horsepower.



> Now on to a specific technical questions (these grew out of comparing
> the GS with the GSL-SE)...
> 
>   Of what importance is the 'performance-tuned rear suspension'?
>
    All 84 and later rx7s have this rear suspension modification. It lowered
    the rear axel link arms (i think) about 20 mm to reduce rear wheel hop
    because of the live axel.

>   What are the advantages/disadvantages of a fuel injected rotary
>   engine (vs. a 2-stage, 4-barrel carb)?
>
    The fuel injected 13B  rotary provides ALOT more torque at lower RPMs than
    the standard 12A engine as well as 35% more horsepower at 6000 RPM.

    Another thing to consider is the actual differences between the GS
    and the GSL-SE. The GSL-SE (and the GSL) have front and rear vented disc
    brakes and a limited-slip rear end. Only the GSL-SE has the 13B fuel
    injected engine. It also has a beefed up clutch to withstand the increased 
    horsepower. 
    By the way, if you want an SE, I would hurry. Mazda is
    changing the body style next year and supercharging the rotary engine.
    No doubt a fun car, but since it is to compete with 300ZXs and 944s
    the price is likely to increase by a large number.

> Finally, what are peoples general impressions of the Rx7 (and Mazda).
>
    I own a GSL-SE and truly love the car. For the money, there are not that
    many other cars that i consider to be comparable. I can't believe with
    all this talk on the net about low priced sports cars, nobody has brought 
    up the Rx7. The standard Rx7 starts at only 11k. I've driven daytonas
    and lasers and don't even think they compare. As for muscle cars, show me
    one that will rev to over 7000 RPM (stock).



						Eric Thune
						Burroughs Advanced Systems Group						San Diego, Ca  
						!bmcg!asg!et