Okay, so I got another motor to rebuild... this one is gonna be my high HP motor :-D... unfortunately, part of the rebuild might have to wait if things don't "go my way"..
Anyway, I'm planning on shooting for 400RWHP for a (almost) DD car. Basically its a rice killer, that needs to haul some ***. What all should I do to the internals besides some Atkins A'pex's and FD corner seals? (basically the Atkins overhaul kit...)
Also, this car is na/turbo.

 

streetport and port the exhaust housings. Some people upgrade the oiling system, but i have never heard many complaints about it failing on a stock system. I would use an RA kit as well, rather then an atkins. Thats just preference though.

Steve

 

Aftermarket ECU, Racing Beat Exhaust, 720CCx4...

 

Aftermarket EMS

By the time you get done working your NA motor, it's going to be a turbo motor.
The only advantage you have is the higher compression ratio rotors - which some will argue is a disadvantage.

Get rid of that NA motor to someone who needs it.
13B NA engines are gettins scarce, and Mazda stopped making parts for them officially.
J-spec 13BT's are cheap and easily available.
If you want 400hp, don't waste your time with an NA.


-Ted