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Karibian

Won't work on the RX8 engine unless you go P-port and use the
big 2 barrel Holley. There is no carb manifold for the RX8
engine to my knowledge. Do you have a 4 port or a six port
RX8 engine. ( I don't use the word "Renesis" because I do not know
how to spell it. RX8 is easier :))

Here is some stuff on the big 500 CFM 2 barrel Holley.

The trouble with the rotary after market manifold situation is there
are so many variations on the intake configuration that the market
is not large enough to support separate costly cast intake manifolds for
all the variations. That is a major reason we support P-ports.
P-ports work and fit the  same on all 13B and RX8 based engines.
The side benefit is you get 50 HP more and they are a couple
of pounds lighter in weight.

Here is a list of Mazda 2.6 L two rotor rotary engines
that all have different intake porting.
13B early 4 port.
13B 2 nd gen six port. Most popular.
13B 2 nd gen turbo 4 port.
13B 4 port Cosmo. Rare.
13B 3rd gen turbo 4 port.
RX8 4 port. Now obsolete.
RX8 6 port.

Also check out Mazdatrix Holley carbs for early 4 and 6 ports.
http://www.mazdatrix.com/R-HOLLEY.HTM

Paul Lamar
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