Just picked up my 13B P-port housings from my father inlaw so i can give them a polish. Going to build the motor next month and have some fun this season at the track.

 

talk about eye-candy ... and you said your father-in-law built those? very talented. very talented, indeed.

hey, i'm just curious about the shape of the intake. care to share?

 

yea i realize the exhaust opens normal, closes late..........intake opens ealy closes late? ........do i have it right.....i understand the D port, but i always thought the exhaust was the other way..with a early open and close late...it looks like a mazda racing housing from outside ,...but i dont remeber what those look like inside

 

Those look factory.

 

maybe it is factory..but i have had factory and those dont look like Mazda racing port configs to me...they have it opposite...D shape port on intake should be with straight edge on top like in the pic above, but exhaust is upside down!
this is what i remeber from my mazda factory race housings anyway

 

They're not MFR.

 

those look nice but i do think on the "D" port has to go the other way

 

They are not MFR housings. They have the MFR style full floating intake flange's to go with my real MFR weber intake. My father inlaw had them made back in the 80's, they use 1974 RX-4 housings. These housings have been around for awhile and used in many applications. From a n/a motor to a supercharged motor. Now i will be putting them back to a n/a application for the time being till i can afford my GT45R. My father inlaw went 12.88 in the 1/4 mile with this engine in a 1st gen, 48 IDA, and 4.44 rear end gears. I'm hoping that i can duplicate it. Thanks for the comments about my housings, I cant wait

 

those look sweet to bad you have to cover them and put them in the car lol

 

hey good luck with it any way