z8cw

Almost done, need to remove the temporary brackets and finish the waste gate runner. Let me know what you think. This set-up must be pretty unique. The turbine inlet actualy points up so the manifold curves around the turbo. I am getting close to firing her up...of course it is Labor Day weekend, and I missed the whole summer.

Oh well

setzep

Looks like a fun little project you have going there. I'm assuning the brace you have attaching the engine flange to the v-band clamp is just to locate the clamp while making the manifold and will be taken off when done? Congrats on being original.

EFINI_RX-7_RZ

Wow, it's the sexiest bundle of steel tubing I've ever seen. Wait, am I seeing right? Is that a side port/peripheral port intake manifold you've got there???

t-von

iTrader: (8)

Ooops!

t-von

iTrader: (8)

Let me guess! Semi PP manifold on the last pic? I'm in the design phases myself. Nice work!

z8cw

Thanks,
you guest right it is a semi pp intake manifold. That was a lot of work. With this bulky intake it gets real tight for the turbo...in particular if you try to fit one this size

setzep

oops! I'm retarded, I obviously didn't read the first part of your post. The brace is temporary.

Again, nice job.

88fc3sw/HX83

hmm, looks like a T51R...where did you pick that up from?

KNONFS

iTrader: (14)

I like your injector plate idea

z8cw

That is the HKS knock of from Canada...will see how it does. Looks well made and has the Garrett BB center.


I like your injector plate idea

Yeah, I thought it was pretty neat. The draw back is it is heavy.

Zero R

iTrader: (1)

Why didn't you just weld in injector bungs?

z8cw

Yeah, that would have been the obvious and cheaper way to do it...having the injector block insures that all pieces line up perfectly. The injector holes are 45 degree to the flow and the mounting bracket is perfectly parallel to that. Also this set-up will give me room to improve.....as a winter project, I might replace this block with individual throttle bodies and the upper part of the intake with a sheet metal plenum. As a first try I wanted to keep the staged throttle, hoping for some intake velocity with just the primaries under light load.

TT_Rex_7

Somone correct me if i'm wrong, but shouldn't the injectors be mounted at 20 degrees, or less?

-Alex

Edit: As far as using the "injector block" to line everything up, as long as the 2 flanges were machined properly, they shouldn't have any issue lining up to each other.

If your looking for velocity, just add a taper in the runners, or use velocity stacks. The main purpose of the dual stage TB is to keep the car from surging. A properly sized plenum and single TB (Main focus is a properly sized TB) will get rid of the surging issues involved with running a single TB. However, the transition from idle-throttle will never be as smooth when using a single TB over the stock dual stage TB. However, with a semi PP engine, a smooth transition from idle-throttle is probably non-existent no matter what TB you use, so ditch the stock TB!

Also, it's hard to tell, but it looks like you don't have any gaskets on either side of the "injector block." I'm guessing you just put the intake manifold together to snap some pictures, and left out the gaskets?

Do you have any pictures of the other side of the intake manifold? (shows the ports) I'd be interested in seeing them.

z8cw

Rex,
As for the injector angle 45 seemed a good compromise in terms of being able to machine a hole that wasn't to long and what I read about injector placement.

Will see about how the motor behaves. I haven't heard from anyone yet who has a semi set-up and a sinlge TB might be in the cards further down the road.

The gaskets are in, just hard to see, I guess.

I attached another pic that shows the flange that attaches to the engine.

Zero R

iTrader: (1)

You can get injector bungs to line up?? I hope your going to use the stock primary location for fuel as well, otherwise have fun tuning it. It is a bitch if you remove the primary rail.

z8cw

Primaries are in the stock place

Owen

iTrader: (1)

That's awesome, I'm in the dream-phase of something like that.

Mind if I ask what thickness metal you used in the various places?

And did you do the pport yourself?

Thanks,
Owen

sleeperfc

what will this motor be used for? the street?

whats the normal idle rpm for a semi p port? has to brap like hell i bet.

z8cw

As for the material...
Schedule 40 aluminum pipe which is fairly thick and heavy but gives plenty of room for grinding and smoothing things out.
321 SS 16 gauuge for the header.

As for the use of the car...
With the big turbo and ports I am shooting for a 1/4 mile car but I hope I can maintain some drivability. Like to drive it on the street just for fun if at all possible. I will let you know how it goes.

BlaCkPlaGUE

Thats pretty sweet. I've never seen a peripheral combined with a stock port setup!! wow!.

I am VERY curious to see if this can make some big numbers. With more airflow than a regular peripheral port this will be interesting.

Good luck.

please keep us updated.

z8cw

Will do...my guess is that in terms of power that there isn't more to be had than with a larger PP only. I am hoping for a little better drivability.

Owen

iTrader: (1)

Don't forget to take vid or audio clips for us!

What size are the Pports?
Owen

z8cw

Will do...PPs are 1 1/4 . I almost think it is a shame to put this manifold in the car where noone can see it and really appreciate its beauty. But wait maybe I can..if it only performs 1/2 as wellas it looks, I'll be very happy.

88fc3sw/HX83

LOOKS GREAT so far! Just currious, but why didn't you use a V-Band flange for the down pipe? Looks like you're choking it durring the transition IMHO.

Owen

iTrader: (1)

Dayum, you got skills!

An old school rotary builder/racer told me that he did his pports himself, I'm wondering if I would be able to.

But I don't know exactly where to put the ports, I know the specs for the MFR ones are out there on the net. Those were for an NA though, I'd like to decrease the overlap for a turbo'd engine.

Owen