----- Original Message -----
Sent: Monday, January 19, 2004 2:36
PM
Subject: [FlyRotary] Re: Intake
question
Actually, Rusty, the secondary ports on the
NA block and the turbo block are different. In fact, when I saw the
amount of gasket it reminded me of the amount I see when I try a NA manifold
against a turbo block. Secondaries on the NA and Turbo are
different.
Ed Anderson
I called up Atkins, and they said they never made
a straight manifold for the turbo block, though they did make one
for an "early 4 port". I think they're referring to something like the
84-85 13B in the RX-7, but I'm not sure. They also made a straight
manifold for the 6 port, which must be what I have. Silly me, I
actually expected the 6 port manifold to have 6 ports, like the engine
does.
Next time I go to the hanger, you can bet that I'll be
measuring some manifolds. I'm now wondering if the one I was using
previously had the proper size ports. Ignorance is bliss
:-)
I'm still
not sure what I'll do. The manifold would certainly run like
this, but it would never be right. At the moment, I'd like to get done
with this &*#$@ fiberglass oil cooler scoop. At least it's far
better looking than BUC.
Cheers,
Rusty (who
as you know, hates fiberglass)
Hi, Rusty....after our
phone conversation regarding the intake manifolds, I just had to have a look.
I just now removed my latest manifold, and you are correct. The secondary
intake holes measure 1 3/4 incheson my latest manifold. On Dave Atkins'
wrap-around manifold, they measure 2 1/2 inches. On the engine, the
ports measure only 1 3/4 inches.
When I bought the 3 thousand
dollar EFI and fuel system from him, he said that it would fit a 1989 turbo
engine fine, since it is a 4-port. I just assumed that "fit fine" meant fit
fine. Glad I ended up with the latest manifold. Everything appears to be
the right size. Sorry if I mislead you....Unfortunately, I was going
from Dave Atkin's statements, and worse of all, from memory. I'm
learning that I should never do that. (working from memory). I had a
nice memory course on cassette, but I forgot where I put it. Thanks for
pointing out the differences in the ports. Paul Conner