Lookin pretty good. You've really got that turbo crammed in there!

wow
that is out of control

great job

May I have one Please!!!!!

Jeff sorry for the stupidity in this question, but it made me wonder:
The intercooler stands in front of the radiator, won't that cause any problems?
I know very little about turbos. I never onwed a turocharged car:)

Great job

Has anybody given thought to if the electric throtle body can take being pressurized?

Jeff

You have managed to get your turbo system up in a few weeks while the others have been plutsing around for months..... awesome

A driven knowledgeble person can achieve more on his own than a bunch of so called experienced wankels .

cheers
michael

I'm in Northern VA
 

Actually I would like to stop by and check out your work if I could. I'm in Alexandria. Shoot me an e-mail at jrcrew@hotmail.com if its okay.

Jeff,
When you're all done, can you give us a total cost of parts and list what you used? Everything looks great in this setup, I just worry about how hot that turbo is gonna get crammed in there like that.

The TB will never have to hold pressure.
When it is closed, the BOV is open. When there is pressure, the TB is open.

No, it shouldn't. It is a relatively short IC and only blocks a very small part of the lower bumper ducting. It is actually situated mostly behind the center grille. I think the total airflow will be suffciently close to stock.

Here is the list so far:

https://www.rx8club.com/attachment.p...chmentid=37336

The turbo on this list actually ended up in my Miata. I am using the T3/T4 that was on my Miata on the RX-8. It was entirely too large for the little 1.8 in the MX-5. Turbonetics Stage 3 Exhaust Wheel in .63 Housing, 54 Compressor Wheel in .50 A/R, Oil Cooled with 360 Degree Race Bearings and a Ceramic Coated Exhaust Housing.

I will create a new thread when I am done that details the installation a little more closely with much more detail.

It all occupies the same space as the OEM exhaust manifold. That is why I did it like this.
The other systems out there (except Greddy) put the turbo in a place where, I feel, the heat will be a bigger problem.
The only issue with having the turbo where it is in my setup is shielding the compressor from the heat. I have a bunch of clever heat blocking parts that I will show when I finalize the installation.

Ya wanna give me that picture one more time? When the TB is open it is equal pressure to the manifold. So if you have over ambiant you have a delta pressure in the TB. How does one get around that?

IE: if you have 10 psi in the manifold you have it in the TB also. You have it in the tract all the way to the turbo.


Edit) OK I see what you meant, across the blade. That is not what I mean, I am talking from inside to outside and into the electronic compartment.

Why would there be a direct connection to the drive motor/electronics?

Even if there were, why would pressure be any different than vacuum?

I don't know, just throwing it out for thought.

Well, I would hope that the bore of the TB is sealed off from the outside world or we would have a huge idle issue! :D

sorry i might have missed the post but how much boost u expecting to get from this setup

oh forgot to say looks good so far......keep it up

On the T3/T4 that I am using, I can "get" up to 21 PSI or so. That would last for about 2 or 3 seconds. :rolleyes:

I will be starting at zero PSI to shake it all down and then I will move up to 5 PSI and then 7 PSI which is all the OEM fuel injection will handle safely.
After that, I am going to add two more fuel injectors to the main runners of the intake manifold so I can go to 9 PSI. I think that is all the stock seals will be happy with.

I am moving incrementally so that I can document all of the changes and be certain that I am not missing something critical that costs me my motor.

I am also limited by my budget, which I am very strict about - it is one of my design goals to keep the entire budget under $3500 (my $50/HP ratio that I maintain as a minimum for all of my serious projects).
Of course, I managed much more out of the Miata and my MX-3 ($30 and $27 per 1 HP, respectively), so we'll see what the final ratio works out to be.

Well, it is not up quite yet. Hopefully, I won't find out why the other folks are having such a difficult time. I should be back on the road by the end of the week.

PS - In the second sentence above, replace "driven" with "impatient" and "knowledgeable" with "idiot savant" and you will be more on the mark.http://www.mazdamaniac.com/images/smiles/jump3.gif

Jeff , She looks like she is shaping up very nice. Good luck. Also the throttle body is a ford unit that they use on the SC mustang so it will be fine. Actually the ford TB has been proven over the past years it is a strong unit. They use it on all the SVT lines and anything ford owns with Drive by wire :) .

-Ryan

Cool! Thanks for the info , Ryan. :D

We need to schedule an "ogle-the-turbo" meet, haha.

Well, join MSCW and you will see it at the next meeting, February 2nd.

I see in the other thread that the manifold is done already...but how did you build a double-wall manifold? I'm familiar with the weld-els from a buddy's project, but I'm having trouble picturing how you would build double-wall tubing yourself for the mani.

thanks for the answer jeff
your job is amazing...

I didn't use weld-els.

The main "log" is a heavily worked 18GA 2.5" pipe that is flattened and shaped to fit over the ports and direct the flow to the turbo inlet.
Then, I welded a second "layer of 18GA steel over the main tube and reinforced that with 1/16" steel strips.
Then, the whole thing is shielded with steel and aluminum plate.

I'm already a member ;)