zinx

iTrader: (3)

Does anyone have any pictures of custom UIMs that they have either built themselves or had others build? I know there are a few floating around out there.

Also, any numbers on gain achieved with the custom UIM would be nice as well.

Thanks!

Zero R

iTrader: (1)

Made this one about seven/eight years ago. (I say that because I can't believe it's been that long) I could email ya bigger pics if needed. I also got a ton of other more drag oriented pics as well.

~S~

ChrisRX8PR

I built this one for my Renesis. It made a huge difference and its still a rotary 13B with a large turbo and 500whp+ so the design should apply somewhat.

I built it using a 5" extrusion for the plenum that has a flat on one side and 3.5 elbow from the throttle to the plenum, the pics don't do justice to the size of the manifold. The runners are 1.5" on the two on the outside for the aux 5th&6th ports and 2" for the middle that were "ovaled" so both primary and secondary ports can flow through it for the renesis to work normally.

Pics:

Some components:


Mocking primary runners up (they feed both the primaries and the secondary ports):


Mocking the Aux port runners 1.5":


Finished 1:


Finished 2:


Finished 3:



Complete final setup:


Let me know if you have any questions.

Chris

Suicide Machine

Ive been tossing around the idea of putting a one off intake manifold together myself, I think one of the best looking units Ive seen is the one off Chato Ibarras drag FD, I attached a pic....I would change a few things though, mainly the plenum, I would want a more rounded unit, I found a company that sells universal plenums in the style I am thinking of, I attached a pic of the plenum below, and heres the website.... http://nozzs.com/index.phpmain_page=...roducts_id=132
For $200.00 it should do the job. Ofcourse you gotta go with a new throttlebody and fab up some runners but all that stuff should be easy to source. I would go with a Wilsons 90mm throttle body and tappered runners, and to finish the unit, clamp that sucker down with Willians clamps to make sure that sucker aint going nowhere. Oh ya, you should also relocate the altenator so your plenum can be moved more central in the engine bay so your runners arent a mile long.....should fit under the plenum piping if you ditch the power steering, or go with a pump relocation of some sort. Anybody wanna chime in on these ideas?

zinx

iTrader: (3)

My thoughts were to use an xcessive LIM just for simplicity's sake and just to replace the UIM since i have this nice 90mm throttle body ready to bolt up.

Suicide Machine

Just chop up a stock upper intake manifold and mate it to a new plenum...this way it will bolt right up to the ground zero / xcessive lower intake manifold..I believe that is what the PFS intake manifold that Ray made for Ernie T consist of. The plenum I attached will probably still require you to move the alternator, but you can just get some rounded tubing and sheet metal to make a simple plenum that you can mount the throttle body too that resembles the stock set up

ChrisRX8PR

The one I made I designed so it would have the desired volume but still fit behind the stock alternator location. That is the reason the plenum is so "fat"...its 5" diameter...that combined with the 3.5" pipe that comes from the throttle which was 70mm gave me all the volume I had calculated that I needed without the extra long plenum....

Something to think about...if you want more volume without all the length make it a larger diameter

Chris

hondahater

iTrader: (2)

Thanks for posting those pictures. I've always wanted to see those man, Your setup is cool as hell.

Zero R

iTrader: (1)

Crispeed did this as well, if that's all your after it certainly will work.

~S~

ErnieT

iTrader: (2)

ChrisRX8PR, very nice! Me like..

ChrisRX8PR

Thanks

It laid 508whp through the Reni at 19psi. Turbo was a PT71GTQ billet with a .96A/R. DP was 3" and then full 4" all the way back. Ran it on E-85 with my own apex seals and the worlds 1st half-bridgeport turbo Renesis(by yours truly ). Then something bit me and I pulled it all out and sold the entire setup and started the conversion to 20B.

It was fun as heck but I want to enjoy the car all the time...the Renesis was fine...but I would like a little bit more (550-600whp) very reliably and a 3 rotor will guarantee that for me. Pushing the Renesis was great but now I want a car that my GF can drive and not notice off boost that it has over 500whp where it was obviously loud and noticeable with a half bridge on the Reni...although it wasn't nearly as brappy as a REW it still had that signature sound.

We'll see where this leads me...sometimes I am all about the build I guess.

Chris

hondahater

iTrader: (2)

hehe I know what you mean, my project just never seems to stop

by chance how did that thing spool? sounds like my t70 .96 backside and half bridge (s5 motor though). Only difference besides motor is I have a 4" downpipe to 3" all the way back. I wonder how those 10:1 rotors help out

Mr Rota

Thats my setup, not complete but gives you an idea (turbo has had guts upgraded since then

10 injector GSR Manifold with my custom plenum, and 100mm plazmaman throttle

hondahater

iTrader: (2)

looks nice! What did you use for the runners?

Erdin

Hears my Mazfix intake

Aaron Cake

iTrader: (1)

You'll find all the details here:
http://www.aaroncake.net/rx-7/projec...an112006-2.htm

This is a custom upper designed to mate to a 6 port NA 2nd gen lower for my Project Tina. Offhand, ~20CM long runners, 1.5" secondary, 1.25" primary, 9" x 4" plenum. The throttle body is a 75MM Edlebrock unit. The engine has a small bridgeport and this setup made just over 400 RWHP on a GT40R at 13 PSI. High boost setting is 16 PSI but has not been dyno'ed yet. 500HP?

mono4lamar

iTrader: (32)

I have some better pictures on my other laptop showing the machined inboard velocity stacks. I used them as I felt that turbulence could occur with just having the port rounded out. Plus there would be even flow all across the runners. I didn't try to make the welds really nice as I didn't want any penetration. Welding .065" aluminum without penetration is pretty hard.

Anyway, it doesn't look horrible but it was made to perform and it has made a great improvement over the factory UIM! I spent too much time making everything equal length, uniform, and went through every runner to make sure there was no hanging welds. Drive-ability wasn't impeded at all for me. The 3.5" q45 gave me no issues...

zinx

iTrader: (3)

Thats fantastic, Mono. Thats really close to what I'm looking for. Want to make another one?

ChrisRX8PR

This was a big-shaft turbo though with a Q trim and a 71mm compressor so it spooled slower than my original turbo which was your exact one (T70 with .96). Still, I had some boost from 27-2800rpm, about 12psi by 3500rpm and could get to as much boost as I wanted before 4500rpm. On a motor that revs to 9250 and doesn't fall off in power with short gears it was great...



BTW...some amazing manifolds on this thread...rotary ****...yum!

Chris

ChrisRX8PR

That is the exact extrusion I used



chris

RoTaRyBoYz

Grand Dad's (Phil Laird) 13b cast runners go for $2000 AUD and his 20b units are around $2275 AUD. A few days ago I spoke to Marco at Magnus Motorsports and he's in the process of designing an intake manifold for both 13b's & 20b's.. Unfortunately he doesn't have an exact release date, but I know it'll be a billet piece.

infinite7z

iTrader: (1)

+1 i smell group buy!!

zinx

iTrader: (3)

I know their manifolds are well respected in the 4G63 world, so i'd love to see something from them for our motors.

mono4lamar

iTrader: (32)

So what you're saying is if I build it they will come? Here's another shot of the inside before welding...

Zero R

iTrader: (1)

Almost reminds me of a RE upper those work well, just need to be cleaned up inside and essentially a pretty similar design.

~S~