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From: et@bmcg.UUCP (Eric Thune)
Newsgroups: net.auto
Subject: Re: Questions about Mazda Rx7's
Message-ID: <1636@bmcg.UUCP>
Date: Fri, 29-Mar-85 17:51:28 EST
Article-I.D.: bmcg.1636
Posted: Fri Mar 29 17:51:28 1985
Date-Received: Mon, 1-Apr-85 04:16:09 EST
References: <386@tekchips.UUCP>
Distribution: net
Organization: Burroughs Corporation, San Diego
Lines: 72

> 
>   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