legacycentral bbs

Since buying a 93 turbo wagon 3 years ago, I've installed a MRT- styled
down pipe, 3" SS exhaust, ,front mounted IC, SDS ecu, Profec-B boost control, and
now that the 4eat has been rebuilt to stronger specs it's time to think
about the size of the turbo.It comes up real fast so it must be the original
one. The plan is to continue using the car around town, on back roads
when going white water paddling, and the occaisional track day.
I dont need a "monster" tune, but consider satisfactory performance
could be supplied at around 16 # boost.

The question is what turbo would be most suitable?
What sized injectors? Perrin fuel rail? Spark plugs?
Thanks in advance,
Bob

I'm going to assume you're in the US and have an EJ22T under the hood.


I believe the 16G would be sufficient to that level of boost. It's efficient to about 18 PSI (or so I've been told), and has very little lag.

I believe the concensus is that NGK copper plugs are good for our engines. They don't last as long as platinum, but are cheaper and have better conductivity, thus better spark. If you're going to do decent plugs, do good wires as well.

Do they even make a Perrin fuel rail for the EJ22T?

With a front-mount, the stock turbo can be pushed that far.

I also recommend the NGK copper plugs. Platinum spark plugs are not made for forced induction.

Actually, I have a front mount and I wouldn't have pushed the turbo that far. When the car was on the dyno, the turbo ran out of steam around 13psi and cost power after that.

If you don't want to do a lot of custom work to make the turbo fit, the 16g is definitely the way to go. You can pick them up used from time to time, or Deadbolt sells them already clocked with the 90 degree inlet...

Don't all stock 16g's have a 90 degree inlet?

yeah, but you can buy them to bolt onto say a WRX new from deadbolt I.E. w/o the 90 degree inlet and stuff.

THAWA wrote:Don't all stock 16g's have a 90 degree inlet?

Yep, you are correct. There are just a lot of used ones from WRX's floating around, and I wanted him to be sure he shopped properly...

So far, we have yet to see the factory fuel rails run out of umph. I think the lines from the tank would need to be replaced first. (thanks Subaru )

I beleive the biggest HP car weve tuned so far was 385WHP with an AVO 450 turbo. (Stock rails)

I think Shawn Logans Forrester is still using factory rails, and puts down 411WHP! on a GT32R turbo. He is now going to a GT35R.

Thanks for the quick response: Spent the first year with a severe
running very rich misfire at part throttle going up long steady hills
(common in British Columbia).Everything was tried including
all fresh wires, replacement factory ecu. Now works good with the SDS ecu.
Using NGK as recommended by Lachute Subaru who used to rally
the ej22t.However their experience with specific turbo was mainly
in racing. Running 12 and the A/F(not wide band) always shows rich,
but at some point the pressure rise will leave the rate of air flow behind.
Wrong routes or dead ends in mods is useless expense, so sound advice is
appreciated.
Dont know what a 16 or 18 is --whether it refers to the compressor
or the whole turbo. Will check Deadbolt to see what I can learn.

Tks again,Bob

when you mean clocked turbos does that mean the out let tube is faceing to the passenger side fender, and the 90 is in its factory position.

Not necessarily. You could do that, but it'd be more work to fit in.

*I believe* that how it is clocked refers to how the outlet is rotated on the turbo core in relation to the exhaust housing. some WRXes have them clocked to point up a bit more to give a better angle for FMIC pipes.

The Deadbolt 16g's that are clocked have the compressor outlet at a 45 degree angle like the OEM VF11 instead of at a 90 degree angle pointing right at the TB. The compressor inlet is at a 90 degree on both versions just like the OEM VF11.

Now depending on what kind of IC setup you go with one may be better then the other. If you're going to use an old WRX/Sti slant TMIC, MY02+ WRX TMIC or the old AWIC setups, the regular 16G would be better because those setups had turbos with the 90 degree outlet as well. If you were going with a Saab TMIC or FMIC, then the clocked 45 degree outlet model might be better (easier to install).

Ah, forgot about the WRX people. Doesn't Deadbolt sell three 16G's? One that is clocked 45 degrees, one with a straight inlet and normal clocking, and one that is normal?

Yes, deadbolt sells those three 16Gs.

Matt Porscharu
If you are not already aware, in SCCA road racing in the 1960s a guy by
the name of Pete Lovely was very succesful in a Cooper Monaco . This
was a sports racer based upon the F1 open wheel.

It was powered by a Porsche engine---thus the name--Pooper.

Bob
(normally aspirated engines suck}