Well, as some of you know, I'm building myself an N/A 20B for either an FB or an FC. Haven't decided yet.

I already started hunting for parts but I haven't bought anything yet. I wanna make sure I can go through with this. My questions are for air intakes and such. I would like to do it with 3 ITBs. Anybody know of such an intake for an N/A 20B and where I could get it or have it made? And what ITBs would you guys recommend? The engine will be street ported, I dont feel confident enough to bridge port it.. I thought about going with 2.5" exhaust all the way but I'm not sure if that would be too small.

But my main questions are, how do I set up the six port system if I add a third rotor? If I use a mechanical actuator, how will I connect ithe actuators to the intake if its custom? Since there was never a 20b N/A, I have to have a custom intake...How would you guys do this?

Should I run N/A 460cc injectors with a walbro255 or TII secondaries with an FD fuel pump? Is this question stupid? In my mind its not.

What rotors should I use? 2 B weights with one A weight? And with that, do I just use the 20B counter weight? How do I pull this off if the 20B has always been made with different rotors than the S5? And in what order do I use which rotors for it to be balanced?

Also how much power you think I would get out of it? Is looking for 300whp realistic? With a TII tranny, clutch, GXL LSD and custom DS.

I know, I'm going in deep

 

Mechanical Power Systems in Ontario made a custom slide valve TB for their 3 rotor FC. They might be willing to make another one. Thats pretty much all I have to add.

 

Thanks! I just e-mailed them.

 

20B's dont have aux ports, do they? Or are you talking about a custom 3-rotor? If so, its a lot more complicated than just adding a rotor....

 

So.....much......fail.......


Oh, and this should be in the 20B forum.

/move

 

Seriously? Damn, I thought it was a walk in the park...

Sideways, I'm using S5 NA irons, of course theres a 6 port system.

 

Thanks for the support.

I remember people telling me this before I turboed up my S4. I succeeded and damn well also... I always do.

And if you see the questions I ask, its really not something I just pulled out of my ***.

Now some good info please. And I dont want the, you'll fail!, comment.

As for the "move section", I plan on using this thread until I start building it, and if I put it in an FC (most likely ) I'd rather it stayed here.

Thank you.

 

So what are you doing for the e-shaft and the special 20B-only iron (sorry, don't remember the technical term)?

 

Of what I have read, I just need to buy the e-shaft for a 20b, the 18 core bolts and the large center housing. Ebay most likely. I'm giving my self 6 months to a year to find all the parts. I understand it'll be hard. But we have a great shop in calgary, RX& specialties, they have everything I need, almost.

And I understand that I probably know 25% of what I need to know to build that engine. But you gotta start somewhere.

 

Ok, but I still don't think that would work, but I could be wrong. From how I am picturing it, you will have 2 rotors that have 3 ports (like an NA), and 1 rotor that has 2 ports (like a turbo.) I don't think that will work. I think you would need RE (or REW) irons to match the 20B irons, as they have much larger intake runners.

 

****. You're damn right...God, how could that have slipped my mind...

Well, that takes the 6 port problem away.

I need to talk to the guys at Mechanical power systems to know how they did it. I saw another guy on a video on Kazaa that had an N/A 20B. So I know its doable...with enough money.

 

Omg...Was browsing through their site

Its not even NA

Those are custom irons and housings? I dont have that kind of cash. 6k is my budget. I'm pretty sure its doable with FD housings and irons. Anyone?

 

P-port turbo FTMFW!!!!!

 

Go away. Thank you.

 

Ka-BLAM!

https://www.rx7club.com/20b-forum-95/my-rx-7-done-cup-holders-3-rotor-semi-p-port-n-setup-stock-subframe-454580/

 

You my friend, are a god.

How the hell did you find that? I looked for like an hour!

I'll PM that guy. Hell yea.

 

yeah sorry up your budget to like 20k then we'll start taking you seriously. i could spend 6k building a 13b n/a

 

I've had it bookmarked forever.

Later on in the thread, there are talks of selling a kit for FDs and FCs, so you might want to PM the original poster and see what he can tell you.

 

Ahhh. You sneeky bastard.


Done.

Thanks a bunch man!

 

Yea. 20K is exagerated a bit dont you think?

Anyhow, I never spent what I had in mind. When I did my car I gave myself a budget of 10k...ended up spending 18k.

I know how it is.

And 6k for an NA? Shop elsewhere man, I can get an engine with new housings and carbon seals, street ported for 3000$ shipped without the core charge. I"ll hook you up if you want

 

PM me if you get a response, the idea of an N/A 20b with ITBs makes my pants messy.

 

I will. I will Even make a build upp thread and give you the link...Also to shut some peoples mouths up. Since they dont have the ***** to do it so in their mind, all will fail.

And the guy logged on today

 

Not really, I can see dropping $20k. The engine and intake is probably 30-40% of the total price. If you do it right and with high quality parts.

I spoke with gtorx7 but he never got back w/me about building my engine and the ITB setup, guess he thought I wasn't serious.

These guys sell full ITB kits :
http://www.xtremerotaries.com/

These guys sell just the ITB not the manifold also (from what I gathered when speaking with them, they too didn't seem very interested in making a sale).
http://www.tweakit.net/shop/product_...733cba8e5fb92d

If you can get a good shape 20B for $3000 PM me

 

Go away? I was telling you what was in the pictures you posted.

Geez.

When you are done building this beast, come on down and shut my mouth. I won't hold my breath though.

 

Sorry, took it the wrong way I guess.