That’s interesting to hear, Bill. My
first engine was an 86 N/A that was suppose to have been street ported (I paid
to have it done), but when I later tore it down, much to my surprise there had
been no porting done. So I ported the next engine myself – at least I
got my money’s worth {:>).
Ed
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Bill Eslick
Sent: Thursday, January 29, 2009
8:56 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Looking
for a rear counterweight
Thanks for the
info. I have the correct rear weight now in hand, and will use the
matching front weight. I am putting the '91 higher compression rotors
back into my '88 engine. Porting will have to wait til next time.
The engine I bought turned out (much to the seller's suprise) NOT to be
ported. Live and learn.
Bill Eslick
On Tue, Jan 27, 2009 at 3:21 AM, cbeazley <cbeazley@innovista.net> wrote:
Hi Bill;
By the book, you want the front and rear counterweights to match the generation
of the rotors ->
86-88 = Series4 (S4),
89-92= S5,
93-95= S6, S5 and S6 are supposedly the same.
rear CW - a few quick searches will turn up more - going rate ~$50-60.
Dealer probably 2.5 times that.
http://www.rx7club.com/showthread.php?p=8911374
front CW:
The S4 and S5 front CW are different although they look very similar.
Cary
PS - more than a few engines have been assembled without being told this - and
they ran just fine. Although, best to try to match.
You should have nothing else to worry about your assembly. Are you going
to give it a good street port?
--
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