NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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

- - S4 Bridgeporting (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/s4-bridgeporting-9691/)

rxtwocoupe

12-22-2002 07:08 PM

I have a couple of questions, can anyone verify for me. Can a S4 13b be bridgeported, i have been told yes and no? And is there any internal difference (besides the compression) between a S4 13B and a S4 13B Turbo??

rotarychainsaw

12-22-2002 09:10 PM

There is a lot of internal differences between the 2 engines. I dont think the 6 port (NA) engine can be bridged unless you get turbo endplates. not 100% sure tho.

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