TDO4L - 13T

[mikewolf]

I'm looking for a turbo. I'm told a TDO4L - 13T would work best for my application. I have heard that it's a wrx turbo, but I'm not sure which models it comes on? IF anyone one has one or if anyone has info on which years and models had these, I'd appreciate it.

Thanks,
Mike

[STeveD]

Check with Fourstar. 905-877-1733. They usually have some TD04's upstairs. I don't recognize the L-13T code, but generally the automatics come with smaller hotsides for faster spool. What size motor are you mounting this turbo to? How much compression ratio stock?

[JoeT]

WRX's from 2002 - 2006 (pre 2.5L Turbo) engines all use the TD04-14T and the 2.5L versions use the equivalent of a 19T (I think).

You can use any of those turbo's the TD-04 designation is for the Hot Side aka Turbine side, and the xxT is the size of the cold side. Sounds like your Miata will be breathing a bit better in 2010 eh...

Hummmm

[mikewolf]

Thanks for the tips. ;)

[Navigator]

Mike, whats the displacement, expected RPM range and boost you plan on running?

[mikewolf]

It's a 1.6, 4000-7500rpm. Hoping for 8-10psi

[JoeT]

So you're looking for about 180 HP ish, then. Any TD04 will work, fourstar probably has one for really really cheap.

The IHI ones from the 1992 Turbo Legacy's will work well too, it'll spool up lots quicker and give you tons of midrange torque. IHI-RHB5 (Same flange setup as the other Subaru TD04's.

[mikewolf]

What are the down sides to the rhb5?

[JoeT]

mikewolf wrote:
What are the down sides to the rhb5?

No real downside to running that turbo for your intended output. Using a turbo that's too small for the intended output, will result in it running outside its' efficiency range.

The RHb5 was designed for a 2.2Litre 165 Hp output at 7-8 psi, which is in the midrange of it's efficiency range. For a 1.6L engine, that turbo would need to run in the 10-12 PSI range to maintain efficiency.

Running a turbo that's too large will result in slower spool, and running below the efficiency range.

You can easilly push the RHB5 to 14 - 16 psi on a 1.6L engine and it won't break a sweat.

[mikewolf]

Thanks, I will keep an eye out for one of those too then.

From what I've read, the TDO4L from the wrx should be able to make 10psi by 3700rpm on a 1.6. Does that sound possible?

[tashko]

Also, older Talon automatics used a TD04-13G...supposed to spool nice and quick but won't give huge hp gains up top.

edit: there's also the T25 from the newer gen autos.

I think a 13g might work well...

here's compressor maps for you:
http://www.stealth316.com/0-frames.htm

[Nuwan]

Mike, I have old but good shape RHB5/VF11 turbos. Definately going to be a good size with quick spool for your application.

Best part is if you ever rally your car the restrictor won't make a difference :lol:

[mikewolf]

Hey Nuwan,
I sent you a pm about one of your rhb5's

Mike

[Navigator]

If your making the exhaust manifold for it then see if you can find a cheap wrx up pipe to cut for the flange and part of the pipe.

You have everything else you need?

[mikewolf]

weirtech in mississauga sells inlet and outlet flanges for $12 each. They also sell the exhaust mainifold flanges for the miata for about $20. It saves a ton of time.
They big issue for me will be tuning. I'm going to be running a megasquirt stand alone, but since it's not a street car, I likely have to do all the tuning on a dyno $$$

[JoeT]

mikewolf wrote:
weirtech in mississauga sells inlet and outlet flanges for $12 each. They also sell the exhaust mainifold flanges for the miata for about $20. It saves a ton of time.
They big issue for me will be tuning. I'm going to be running a megasquirt stand alone, but since it's not a street car, I likely have to do all the tuning on a dyno $$$

No big deal on the megasquirt, that's a well known piece of hardware, that comes with good references.

Get used to running an EGT / AFR / EOT guages and learn how to interpret them. The only drawback I have with the Megasquire is the lack of logic behind barometric / temperature compensation. Some of the more expensive Engine Management Units ( Motec, Motronic, Autronic, etc. etc. etc.) have the ideal gas law compensation tables aready built in, and it makes it easier to maintain a "fine edge" tune with minimal touches.

Good choice... You'll have a blast.

[tashko]

Do your tuning at the drag strip test'n tune nights...cheapest dyno time...

[mikewolf]

My wrx turbo is sitting in Buffalo waiting for me to pick it up. Does anyone know what I'll need for water and oil lines?

[JoeT]

there should be some banjo bolts for the water inlet and outlet. If it didn't come with the lines, you can go to JRP and get some NPT - AN adapters and use those for the water inlet and outlet.

For the oil line inlet, you'll need a special banjo bolt with a very small orfice. The TD04 needs a low volume drip to keep the bushings lubricated. If you use a full flow banjo bolt, you'll end up with oil blowing by the slingers and into the exhaust.

The oil outlet is simple, it's a gravity drain that's mounted on with 2 small bolts. No biggie.

[mikewolf]

From what I can see, I need a 10x1.5 banjo bolt for the oil with a .065" restrictor. Does that seem reasonable?
Any idea on what which NPT I would need?

[JoeT]

I can't remember which NPT you'd need, but I have a couple of used ones at home that you can have for free. (I just need to find them)

Yes, the banjo bolt with the .065 restrictor sounds correct.

[mikewolf]

If you can find them, I'd really appreciate it.

Mike

[STeveD]

Joe, is 0.065" right for a OE turbo? That's the diameter that Herman told me to reduce my Ball Bearing turbo to if I keep getting puffs of smoke on start-up.

[JoeT]

STeveD wrote:
Joe, is 0.065" right for a OE turbo? That's the diameter that Herman told me to reduce my Ball Bearing turbo to if I keep getting puffs of smoke on start-up.

Yup, that's the OEM turbo size, but unfortunately it won't fit your GT28, but I'm sure we can find a banjo bolt with the correct restrictor size.

[mikewolf]

Hey Joe,
It turns out my turbo came with the coolant lines and an oil drain line. I was pretty surprized. I was skeptical about buying a new turbo for $150 on ebay, but it showed up, brand new as advertized and has all the correct markings on it. I'm pretty excited.

[Navigator]

New for 150, wow thats great.