I wish more guys would go this route and stop ruining their FDs by stuffing V8s in the engine bay....

 

The only problem i would have out here is emissions, not like my single turbo FD passes in any respect, but i'm sure it idles better than a heavily ported 20b would...

how much porting do you have to do and how would it IDLE to get 300rwhp... i would be interested in a simple 20b N/A setup that could possibly run 3 inch pipe and a catalytic converter if necessary w/ a couple borla mufflers...mind you this would have to be at least a year from now (unless i win the lotery, which i dont play), but i doubt you will stop pioneering the N/A field by then =)

any ideas on the costs of like a blown 20b to start off with, mild porting, rebuilt with high comp s5 rotors and an ignition/intake/exhaust to match? like i said goal of 300 rwhp.

I'm not like those foolio v8 guys or even the insane turbo guys, i want a car i can POUND on day in day out and have it be pretty reliable. with my single turbo, every time i push that thing to full throttle and the wastegate opens up, it's always there in my mind that this could be it...I HATE LIVING SPRINT TO SPRINT!!! >=(, i want to live a little...

BRIAN

 

why dont you just NOT port the primaries (thats whats open at idle) and just port secondaries and (of course) use the P-ports on actuators in the upper rpm ranges. Then you could have a normal and hopefully not too stinky idle. Just a thought...

 

This thread is very long now, so here is a quick refresh of how my Rx-7 performs, acts, and what has been done to it.

It idles perfectly at 900 rpms, has a very small streetport lope. My p-ports are capped off still, and even when I do open them up they will have throttles to control them. So still idles perfectly, has high rpms, and will most likely make over 350rwhp.

It has made 335rwhp on just the streetports, and not final tuning. (mustang dyno, no less)

Still burns 89 octane every day.

Has 9:7-1 rotors

FD exhaust sleaves

It may be hard to get to pass emissions, with a cat. High output N/a HATES cats.

 

I couldnt agree more, hopefully its just a fad.

 

Rotaries get their "bad reliability" rap from turbo FC's and FD's. Look at the NA cars, they get beat up and STILL keep on going. And what about the 787? Mazda tore down the engine after racing, and there was BARELY any wear at all! They could have used the same engine for MORE 24 hour races.

Thanks GTO for going the route you did. I think it was a fantastic choice...

By the way, i found the SAE papers on the rotary aircraft engines from 1990. They did a side port/ aux p-port setup and it worked QUITE well. I think you underestimate how much extra power your P-ports will bring....

 

Ahh the p-ports..... I am always humble about things not done yet. 350rwhp is probly very conservative. I wish I could post pics of the progress, but I must wait to show everyone.

 

Better to underestimate and be happily surprised than to overestimate and be disappointed.

335 whp, that was on 89 octane? Have you tried running it on 87? I'm thinking the quicker burning lower octane gas would be beneficial at high rpms. Just a guess though.

How high have you taken the engine?

335 whp is impressive, enough to make me reconsider a V8 swap. Have you made any more videos lately?

 

Yeah, 89 octane. I had built a 2 rotor TII n/a motor with 9.7 rotors back in the day(the engine that inspired me to build the 3-rotor). Under very high rpm, high load (4th gear) I think it sorta started to ping with 87 octane. Ignition was aggressive though. So I havent tried 87, simply to be safe. I've spun the 3-rotor to 8,700rpms. No more vids yet, but maybe in a few months!

 

Well ping in a NA state shouldn't be as strong as ping in the boosted state. 87 shouldn't be a problem in your NA 20b if your timing is right.

 

Wow I can't believe I didn't notice that you lived in Ohio near Colombus! That's less than an hour drive! Man this is probably the 3rd highlight of my time in Ohio ever since the Air Force ordered me to move here to Wright-Patterson AFB (First would be no emissions, 2nd would be my newly bought TII)! You wouldn't mind if I came over to bother you would you? Because the 20b exhaust note is teh sex and I always had a 20b conversion in the back of my mind ever since i've owned my first 7.

 

Haha, well, I just moved to Florida to work for Mazsport! Sorry!

 

Yeah, I could back off some timming and put in 87, but isnt the dynamic compression getting kinda high at 8,600 rpms and 9.7:1 ?

 

I'm no expert at all on this kind of stuff. I just know others run 87 in high compression rotaries without problems when properly tuned. Contact Judge Ito to pick his brain.

 

How is this going to effect your 20B 'kit' work?

 

I may try 87 again, but not sure if its worth the slight power gain. 89 is not much more expensive for me to have a little "cushion". I am not sure if I want to contact judge Ito.

Not a whole lot, all the parts are blueprinted in the machine shop, its a matter of me calling and saying "yo, I need some more stuff" and then sending it out to you guys once its made. Of course the welding/ fab I do just now gets sent to Florida instead of Ohio.

 

^^^

Cool, glad they didn't have you sign some sort of non-competition agreement haha!

 

Aww, oh well that's okay

 

FLORIDA SUCKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1111 why didnt you do an SR20 swap? they can handle 450whp stock easy!!!!!

 

Any updates? Any new videos? Did you get the new intake setup started yet? I'm curious to see what you do with the whole semi-PP setup.

 

The new intake has been started on, I am still working out the specs and materials for some of the components, as I have a weight minimum I am trying to reach. Alot of parts have came in, havent had time to work on it for over a month. But hopefully I'll have something for you guys soon.

 

i hear 3 gen owners can use the stock subframe for 20b swap looking for some pics if you have some?

 

*edited* revied thread.

 

Alright, its summer. That means 2 things:

1. No Snow

2. P-ports should be opened up and used! (finally)

So lets hear of the progress!!!

 

Do you have any pics of the kit? Does it work with the stock 20B turbo setup?