Message-ID: <4028E629.7040408@mail.viclink.com>
Date: Tue, 10 Feb 2004 06:09:45 -0800
From: Perry Mick <pjmick@mail.viclink.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: nonEFI fuel systems
References: <list-2985629@logan.com>
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Dale Rogers wrote:

>Hi All,
>
>   I want to thank Jim Mosur <jmosur@interlog.com> for refreshing in my mind what I am trying to accomplish.  I 
>just came a gnat's eyelash from purchasing a complete 1985 
>RX7 (not running) for about $400 USD.  What put me off was 
>that the owner said it had a 12a engine.
>
>   It looks like I could still buy it, as it was still in 
>yesterday's paper.  But why?  Well, for one, it's an 
>automatic - a real rarity in Arizona - so it already has the correct flywheel and counterweight.  I also get an oil 
>cooler, something the salvage yards want extra $$$ for.
>But, it has a carburator and distributor, each of which 
>means fewer ponies.  
>
>
>
>   I have a multiple-part question: 
>
>(A) Since my intention is to use Tracy's EC, I'd expect to 
>have to build a custom intake anyway; but can I use the 
>distributor as a crank angle sensor, much the way that 
>Chrysler point distributors could be upgraded to hall-effect 
>sensors for it's electronic ignition?
>
>(B) Leon, in an exposition about a year and a half back, 
>rated the 12A at 125 HP; is that before or after mods such 
>as removal of mufflers and smog equipment, and/or porting?  
>All the tables I've seen rate the 12A at only 101 HP.  
>Moving from 125 to 160 HP (the minimum for a COZY) seems 
>fairly doable; from 101 does not - at least within my 
>budget.
>
>(C) I understand I can use the center and end housings with 
>13B rotor/housings and end up with a four-port 13B, but 
>would I also have to come up with a 13B eccentric shaft?  If 
>so, does that mean that my flywheel and counterweight are 
>now useless?
>
>
>   In case y'all haven't already figured it out, I'm 
>building my COZY on a shoestring.  I can ill afford to make 
>any major mistakes; so I am desparate to sort as much out 
>before I tie up my meager funds.  It would appear that my 
>best choice for the money is a 86-87 FI engine from from an 
>automatic RX7.  Finding that combination has been ... an 
>*interesting* excercise, so I'm trying to sort out reasonable 
>alternatives.
>
>Thanks,
>Dale R.
>COZY #1254
>
>
>  
>
Dale, you should avoid the '85. I have a 12A in my hangar and I believe 
it is heavier than the 13B. I need to get around to weighing it to be 
sure. The '83-'85 12A cars had the oil to water heat exchanger, not a 
real oil cooler. If it does have a real oil cooler it might be a GSL-SE, 
a fuel-injected 13B. But it sounds like it has a carburetor, which means 
it would definitely be a 12A.

To get a 13B you would need to look for a 1984-85 1st gen GSL-SE model 
only or any second gen 1986-1991.

Perry