RX7Club.com - Mazda RX7 Forum - Half bridge 6 port

RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)

- Naturally Aspirated Performance Forum (https://www.rx7club.com/naturally-aspirated-performance-forum-220/)

- - Half bridge 6 port (https://www.rx7club.com/naturally-aspirated-performance-forum-220/half-bridge-6-port-1106494/)

Half bridge 6 port

Car is an 88 GTU.
Im running an rtek 2.0 for fuel management
Porting will be a combination of the pineapple street port and mazdatrix half bridge with a EP2 exhaust ports. With 2mm fly cuts in the housings. D porting the irons, and really opening up the intake tract im machining solid dowels, I'll be using a steel lightweight flywheel. Modified Atkins aux sleeves "altered for the bridge", and a ford lumbar pump activated via rtek to control the aux ports. I'll try and keep this updated as I go, I should have my housing and new apex seals back from goopy later this week. https://cimg5.ibsrv.net/gimg/www.rx7...e749359c30.jpg

https://cimg6.ibsrv.net/gimg/www.rx7...f80d33666d.jpg

https://cimg7.ibsrv.net/gimg/www.rx7...4986d58e3.jpeg

https://cimg1.ibsrv.net/gimg/www.rx7...2a7f2566a.jpeg

Got the irons painted, still waiting for my housings to come back from goopy
https://cimg5.ibsrv.net/gimg/www.rx7...b203e61fad.jpg

https://cimg6.ibsrv.net/gimg/www.rx7...66027c79a6.jpg

What are your power goals for this? I have a 6port I about to either Bridge or try and 4port Irons and bridge those. Its not super easy to find a lot of information on NA performance. I really like where your build is going.

Quote:

Originally Posted by 13bREW (Post 12120081)

I'm not really shooting for peak number per se,.although it seems like 230 whp is the number to beat. I'm more interested in torque and power under the curve I'm building it more to be a fun streetcar That I can take to the track or autocross with That just has gobs of power where you want it and not Some peak number .

Quote:

Originally Posted by dpartinvr4 (Post 12121276)

https://cimg0.ibsrv.net/gimg/www.rx7...8605605160.jpg

Really the next step from here would be to find one Millimeter larger butterflies, the throttlebody has plenty of room for it, but for now we'll see how this works once it gets all put back together

Got the intake painted up, Still waiting on goopy to call me back on my rotor housings, then I can resemble everything.
https://cimg0.ibsrv.net/gimg/www.rx7...15f50894f5.jpg

Still waiting waiting on my housings/apex seals from goopy, in the mean time I decided I liked flat paint better than glosshttps://cimg5.ibsrv.net/gimg/www.rx7...22253f77e7.jpg

I'm really interested to see your progress. Looks great so far.:icon_tup:

Quote:

Originally Posted by Mark Boss (Post 12125153)

I'm really interested to see your progress. Looks great so far.:icon_tup:

I'm excited to see what happens. just wish goopy would get their ass in gear and finish their move.

Finally heard back from goopy, should have everything back this week :)

Well, since it's another wasted weekend waiting for my housings from goopy, I put the keg together with junk housings to start building the lines for the oil bypass and fuel lineshttps://cimg7.ibsrv.net/gimg/www.rx7...dca9bd02aa.jpg
https://cimg9.ibsrv.net/gimg/www.rx7...3ebec1830d.jpg
https://cimg5.ibsrv.net/gimg/www.rx7...1d1e20913f.jpg

why, solid dowels? also i could make you a solid hard line an -10 to 10. or guide you how to make your own.

Quote:

Originally Posted by lastphaseofthis (Post 12131628)

why, solid dowels? also i could make you a solid hard line an -10 to 10. or guide you how to make your own.

solid dowels because why not, it's only going to help support things, and it will probably end up boosted at some point, so it's just preventative maintenance.
The external oil line is just fine with -6 line, the port itself is only roughly that size anyway, and bypassing the two 90° bends and turbulent dowel threads alone flows better.

Housings show up tomorrow!!!!!!

Life got in the way a little, but I got a bit donehttps://cimg6.ibsrv.net/gimg/www.rx7...69848cb612.jpg

Looks mighty fine man, love those braided lines as well, looks beefy

Just finishing up some odds and ends tonight not too much to take pictures ofhttps://cimg5.ibsrv.net/gimg/www.rx7...aada8594e3.jpg

The ports look great. I will be doing something similar shortly!

Couple pictures showing the aux port activation set up, I'm using the EGR solenoid wire activated via the RTEK to kick the relay mounted underneath the fuse panel witch is using the spare fuse slot for power, to turn on the Ford lumbar pump which is mounted on the driver side of the intake Plenum.
https://cimg2.ibsrv.net/gimg/www.rx7...2f470beb8a.jpg
https://cimg3.ibsrv.net/gimg/www.rx7...b52998bde0.jpg
https://cimg4.ibsrv.net/gimg/www.rx7...f23602136c.jpg

Support blocks to hopefully keep the high pitch ring downhttps://cimg6.ibsrv.net/gimg/www.rx7...94593e77b1.jpg

wow, that engine bay looks really clean! Good luck with the build!

First fire, open header
https://youtu.be/pzObtkHMi60

https://youtu.be/7J8ulugS-bY

https://youtu.be/rse-Zbl3V40

Gotta drain out the six-month old gas, but the exhaust is done :)