If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.
Nearly everything is different,
Housings, rx7 has peripheral port exhaust.
Side plates, rx8 has side plate exhaust.
Rotors, rx8 higher compression and the rotor gears aren't as strong as the rx7. Also have more oil control rings I think than the 7.
Oil pan, engine mount position is different for both cars.
turbos, rx7 has twin, rx8 has none.
You can use an rx8 eccentric shaft in an rx7 engine as it is lighter but the entire rotating assembly needs to be balanced. I'm using a steel front cover gasket on my rx7 instead of the paper one for the rx7. Needed a bit of modification however to fit correctly.