NoPistons -Mazda Rx7 & Rx8 Rotary Forum

- Rotary Engine Building, Porting & Swaps (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/)

- - what size are MFR PP's? (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/what-size-mfr-pps-53989/)

mazdaspeed7

10-25-2005 06:19 PM

Im curious what the ID of MFR peripheral ports are, as well as any of the aftermarket ones out there. If anyone knows, please chime in.

Kim	10-26-2005 03:14 AM

IIRC the intake manifold to rotorhousing is 43mm on a 13B

It opens up and ends in a D-port

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