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-   -   Porting (https://www.nopistons.com/2nd-generation-specific-17/porting-4245/)

dac 08-04-2002 11:32 PM

I know that N/A Motors have the Exhaust Insert in the housings and the center housing has some very lame ports on it with no room to open them up, But the 6 ports are offer much more timming that a Turbo or any other product 13B, So wouldn't it be a hot tip to swap 6 port front and rear housings into a Turbo motor? Or vis versa?



You would have the larger Turbo center housing ports with the larger and additional port timming from the 6 port motors plus the elimination of the exhaust inserts.

1Revvin7 08-04-2002 11:35 PM

n/a tuners do that.

vosko 08-04-2002 11:36 PM

alot of people run turbo rotor housings because of the bigger ports and no stupid sleeves

pengaru 08-05-2002 02:19 AM

what about running just the turbo intermediate housing? I'm rebuilding my 6 port this week most likely, and I plan on doing a street port, but it looks like the intermediate housing has small ports and water jackets real close, are the turbo intermediate housings interchangeable? if so, got a good one you wanna sell me? https://www.nopistons.com/forums/pub...IR#>/smile.png

vosko 08-05-2002 07:30 AM

six port street port from judge ito

http://67.83.39.159:8085/photos/sixp...reetport-1.JPG

RotaryManRX7 08-05-2002 08:13 AM


Originally Posted by pengaru' date='Aug 5 2002, 02:19 AM
what about running just the turbo intermediate housing? I'm rebuilding my 6 port this week most likely, and I plan on doing a street port, but it looks like the intermediate housing has small ports and water jackets real close, are the turbo intermediate housings interchangeable? if so, got a good one you wanna sell me? https://www.nopistons.com/forums/pub...IR#>/smile.png

Yep, you can do that. That is what I am running with two turbo rotor housings. https://www.nopistons.com/forums/pub...#>/biggrin.png

pengaru 08-05-2002 08:44 AM


Originally Posted by RotaryManRX7' date='Aug 5 2002, 02:13 PM
[quote name='pengaru' date='Aug 5 2002, 02:19 AM']what about running just the turbo intermediate housing? I'm rebuilding my 6 port this week most likely, and I plan on doing a street port, but it looks like the intermediate housing has small ports and water jackets real close, are the turbo intermediate housings interchangeable? if so, got a good one you wanna sell me? https://www.nopistons.com/forums/pub...IR#>/smile.png

Yep, you can do that. That is what I am running with two turbo rotor housings. https://www.nopistons.com/forums/pub...#>/biggrin.png[/quote]

Hrm, that sounds like a good idea. Are the turbo housings compatible with my header and 6 port side housings? Will anything need to be modified or plugged?



I just checked with mazdatrix and the 86-88 turbo intermediate housing is $342.46,

and 86-88 turbo rotor housings are $462.49 for each. Kindof expensive, anyone know where I can get these cheaper?

dac 08-05-2002 09:37 AM


Originally Posted by vosko' date='Aug 5 2002, 01:30 PM
six port street port from judge ito

http://67.83.39.159:8085/photos/sixp...reetport-1.JPG

I was talking about just replacing the intermediate plate (center) and perhaps turbo housings to get rid of the silencers in the exhaust port.



But the Intermediate housings on a 6 port have VERY small ports.



Here's a good picture:

http://www.mazdatrix.com/faqpics/porting/6p13.jpg



The 6 ports in the end housings I would keep as they offer additional port timing.

pengaru 08-05-2002 11:19 AM

according to the mazdatrix site, the turbo rotor housings have a water passage above the exhaust port which needs to be plugged on the N/A if you use the turbo rotor housings.

Rotarydragon 08-05-2002 12:43 PM


Originally Posted by vosko' date='Aug 5 2002, 07:36 AM
alot of people run turbo rotor housings because of the bigger ports and no stupid sleeves

I LIKE MY STUPID SLEEVES!



YOU'RE MAKING FUN OF ME ARN"T YOU!?



https://www.nopistons.com/forums/pub...#>/biggrin.png



I was kicking about the idea of going with a standard 4 port 13B and carbing it to see what kinda power could be squeezed out myself.


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