Return-Path: Received: from out010.verizon.net ([206.46.170.133] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2762442 for flyrotary@lancaironline.net; Sat, 22 Nov 2003 21:56:26 -0500 Received: from [65.239.43.120] ([67.227.200.179]) by out010.verizon.net (InterMail vM.5.01.06.06 201-253-122-130-106-20030910) with ESMTP id <20031123025624.ODAL18505.out010.verizon.net@[65.239.43.120]> for ; Sat, 22 Nov 2003 20:56:24 -0600 Mime-Version: 1.0 X-Sender: res0c5l1@incoming.verizon.net Message-Id: In-Reply-To: References: Date: Sat, 22 Nov 2003 18:56:58 -0800 To: "Rotary motors in aircraft" From: Ken Welter Subject: [FlyRotary] Re: Need quick help - found 3 different 13B's in wrecking yard. Content-Type: multipart/alternative; boundary="============_-1142566225==_ma============" X-Authentication-Info: Submitted using SMTP AUTH at out010.verizon.net from [67.227.200.179] at Sat, 22 Nov 2003 20:56:22 -0600 --============_-1142566225==_ma============ Content-Type: text/plain; charset="us-ascii" ; format="flowed" > but I just found a place that has three RX-7s - a >pre-'86, an '87 and a post-'89. I can get the 87 engine (complete with ECU, >he says) for $350 USD. I didn't ask a price for the newer unit. > > Is there anything in particular that would make the post-'89 more useful >than the '87? > >Dale R. > > >I would probably skip the pre-86. The 87 is fine, as is the >89. The 89-91 had lighter rotors, and higher compression, though it >won't matter that much. The bigger question would be whether either >of these was a turbo engine. It would also be nice to know why the >cars were in the yard. For example, a totaled rear end of the car >would probably indicate that the engine was OK at the time. A good >body would probably mean the engine was toast. Either way, you'd >want to rebuild it, but it will likely be cheaper if the engine was >good when it was scrapped. > >Give us more info, and we can help you make a better decision. Good luck. >Rusty > I disagree skipping the pre-86 as they are good engines. They have 3mm apex seals and the o rings are in the aluminum rotor housing so you don't have the problem of the ring groove rusting and braking away, also the side and center housings are interchangeable with the 12A which are a dime a dozen in the case you need one someday. There are two types of pre-86 13B's, a 4 port with carb and a 6 port with injection and the porting is better in the 12A center housing than in the 6 port so it would be an advantage to pull a switch if you had a 12A center housing. Ken --============_-1142566225==_ma============ Content-Type: text/html; charset="us-ascii" [FlyRotary] Re: Need quick help - found 3 different 13
 but I just found a place that has three RX-7s - a
pre-'86, an '87 and a post-'89.  I can get the 87 engine (complete with ECU,
he says) for $350 USD.  I didn't ask a price for the newer unit.

    Is there anything in particular that would make the post-'89 more useful
than the '87? 

Dale R.
 
I would probably skip the pre-86.  The 87 is fine, as is the 89.  The 89-91 had lighter rotors, and higher compression, though it won't matter that much.  The bigger question would be whether either of these was a turbo engine.  It would also be nice to know why the cars were in the yard.  For example, a totaled rear end of the car would probably indicate that the engine was OK at the time.  A good body would probably mean the engine was toast.  Either way, you'd want to rebuild it, but it will likely be cheaper if the engine was good when it was scrapped. 
 
Give us more info, and we can help you make a better decision.  Good luck.
Rusty
 

  I disagree skipping the pre-86 as they are good engines.
 They have 3mm apex seals and the o rings are in the aluminum rotor housing so you don't have the problem of the ring groove rusting and braking away, also the side and center housings are interchangeable with the 12A which are a dime a dozen in the case you need one someday.
 There are two types of pre-86 13B's, a 4 port with carb and a 6 port with injection and the porting is better in the 12A center housing than in the 6 port so it would be an advantage to pull a switch if you had a 12A center housing.

 Ken
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