Hi, ive currently got a std 12a in a mazda 323 station wagon (1985) over here in new zealand now i have noticed that 2 of my end plate and rota housing seals have started to leak small amounts of oil due to the engine being over heated about 3 times in a row.



Anyway I figure might as well pull apart the engine replace the seals and ive got hold of some bridge port intake and exsaust porting templates, and i figure what the heak might as well port it out (the cars tricked out atm anyway).

Heres my question, my fuel pump is a little grunty thing so i think that will be sweet, but what other factors do i need to take into account?

My exsaust is currently a 2 1/4 basically straight though quite loud.
Apparently the engine was rebuild 6000kms before i got it, but sat around for a good 3 years, so i would say the apex seals are ok etc. Apart from the side seals which have been melted alittle or what not.
Its a carby and i feel that the carb can handle the new fuel requirements.

Whats the steps involved, im no fool but never done a port before.
1, pull apart engine
2, port it
3, new seals
4, rebuild
5, re tune it



?? any input would be great
Cheers.

 

You'd probably be better off asking this in one of the Rotary forums... out of all the forums to pick, you picked the one devoted to NON rotary powered cars haha

try here:

https://www.rx7club.com/general-rotary-tech-support-11/

or mabye a mod can move you accordingly

 

ha lol gez im great anit i

 

Moved to the Rotary Performance forum.

 

I don't know anything about 323s but it looks like you could pull that motor very quickly, theres nothing there.

 

You've got the process right really; just clean the housings up enough to handle before you port, and clean the **** out of em' after.

If you've never done a port before, practace on some junk housings, and check out some threads on porting (n0pist0ns has a a great engine bulding forum)

 

is that a red bull can?

 

dp sorry

 

I was thinking the same thing. Looks like 2 Red Bull cans. I know red bull gives you wings, but damn. lol.

 

You will need a much bigger carb and manifold to feed the bridgeport motor.