"Dr. Kenneth R. Johnson" wrote:


Hi All,

I have the opportunity to buy a 1988 RX-7 with a 13B.  This is NOT
the turbo.  Will I be able to
port and polish this engine to get 200+BHP or should  I be looking
for a more recent engine.

Can

someone explain the differences for me.

Thanks for your help.

Ken Johnson

Yes you can port and polish it with the proper intake manifold it
should generate
close to 200 HP particularly with a 2.85:1 gear box. Tracy claims he
is working
on such a gear box.

Paul Lamar

Or you could Peripheral Port the rotor housings and easily get 200hp.
 Right Jerry?

Tom Webber

  I look on 200 hp as negative thinking.  200 hp will not turn the prop
I have already bought.  Jerry

According to Pineapple Racing here in Portland, OR, I should be able to get
220 hp at 8500 with my 6 to 4 port engine.  I would assume that you would
be able to do that good starting with a 4 port and opening it up to the
same port area.  Of course, 8500 is 3000 at the prop with a 2.85 drive.  I
figure that would be the redline or "War Emergency Power"   P-)

This is of course speculation until I get it running..
..with that 2.85 drive..
..that I'm waiting for..
..right Tracy?        P-)

Mike

Mike McGee, RV-4 N996RV, O320-E2G, Hillsboro, OR
13B in gestation mode

Mike how is the adaptation coming on the cast manifold I sent you?

Paul Lamar
 
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