Spot That Turbo???

[SittingRS]

have a 97 eclipse rs i bought when i was younger and now it just sits on blocks... so time to have some fun on my off time... i was given what i believe to be a new turbo but have no clue if it's decent or what it is capable of... can some one give some feed back by identifying it??? ie max psi recommended parts like oil feed fittings.. obviously it doesn't have a waistgate so i would love for some recommendations on that end because the only one i have worked with in the past had a waist gate already attached.

the lable reads:
TYPE: TD04H-15G-11
SERIAL NO: XXXXXXXXXXX
PART NO: 8970114741
MFD NO: 49189-00511
IZUZU MOTORS LTD.

Pics: (sorry for shitty quality - batteries were going dead, i had to hurry)

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thanks for ## help

 

[420Adriver]

all the dsmers on here told me to get the tial 38mm tial wastegate when building my turbo kit for my car but there pretty pricey( everyone that ive talked to that has one says it works really good though)

 

[VelocitàPaola]

Whatever you do, don't get a Turbonetics Deltagate. There was a lot of hype about how bad they are... unfortunately, the claims were all true. I didn't research the Deltagate well enough until after I had bought one. The wastegate itself had an internal leak at the diaphragm, so I was stuck having to buy a TiAL to replace it.

As for the turbo... well this turbo kinda baffles me. It's definitely an MHI turbo (made by Mitsubishi Heavy Industries); by the looks of, it appears to be a 15G. I believe that turbo came on twin turbo 3000GTs and Stealths. Why it has Isuzu badging on it is beyond me; maybe someone else knows... It doesn't look like a bad turbo at all, though.

The compressor side fan blade pattern is reminiscent of the 16G (that's a good thing), while the turbine blade pattern looks more like a 14B. Altogether, the unit itself doesn't look particularly small. I'd bet most of the fittings you'll find for a 14B or 16G turbo will fit on this.

The flanging looks a little strange to me though. The turbine inlet is oriented like a Garrett T3, and the outlet appears to be in the same style. Maybe that's where Izusu came in: perhaps they casted their own turbine/compressor housings to compensate for a particular application.

 

[SittingRS]

thanks for the responses so far... i have seen 2 different types of waistgates some look like a brass round piece and the others look very similar to a bov am i stupid or is this common... my engine is completely torn down and right now the head is at a one of my clients machine shops getting ported and polished... i would really like to know what psi i am looking at getting from this turbo, i am glad to see i wasn't the only one that couldn't get the exact specs for it... is there a way i can control the psi electronically?? i design software and want to write a piece to control it via an onboard pc i'm building.

 

[SittingRS]

maybe some dimensions will help to.. from intake to exhaust outlet it is 6.5" the intake side turbine housing is 5" in diameter. the intake turbine inner diameter is 2" (is that kinda small????)

 

[4UH8ERS]

thanks for the responses so far... i have seen 2 different types of waistgates some look like a brass round piece and the others look very similar to a bov am i stupid or is this common... my engine is completely torn down and right now the head is at a one of my clients machine shops getting ported and polished... i would really like to know what psi i am looking at getting from this turbo, i am glad to see i wasn't the only one that couldn’t get the exact specs for it... is there a way i can control the psi electronically?? i design software and want to write a piece to control it via an onboard pc i'm building.

What kind of psi you will be getting depends on the wastegate you use. You can set the psi at whatever you would like with a mbc (manual boost controller). although, alot of internal wastegates have a minimum psi and you can only raise it from there unless you opt to do the wastegate mod which you can look at in the tech forums.

The wastegate your refering to that looks like a bov is an external wastegate most likely and it mounts to the turbo manifold. An internal wastegate comes off the turbo housing and is a brassy color as you stated. Your turbo does not have an internal wastegate therefore you will have to go with the external setup.

just an idea of what your looking for:

http://cgi.ebay.com/ebaymotors/TiAL...011QQitemZ320004034935QQrdZ1QQsspagenameZWDVW

 

[VelocitàPaola]

I think the "brass round pieces" you're referring to are internal wastegates. There is no way to adapt an internal wastegate to a turbo that wasn't originally designed for one, without completely changing the compressor/turbine housings.

The "BOV-like" ones are the external wastegates, which you'll need.

You can easily control boost using an electronic boost controller (i.e. the GReddy Profec). You can also try to make a boost controller yourself; they're not terribly complicated. I've looked into building one myself for quite some time. You'll need a linearly rising +5V signal boost sensor (think Motorola MPX 4250 AP), a variable flow air solenoid valve or fast idle air valve, an appropriate microcontroller (BASIC stamp?), the necessary drivers, controls, and displays.

Basically, you'll program your microcontroller to take readings from the boost sensor (this will take a little calibrating, unless the sensor comes with an exact voltage-boost scale). When it reads the highest allowable boost limit (user defined), it'll either slightly open the solenoid valve, or begin a cycle of opening and shutting the fast action air valve.

An external wastegate has two chambers; the lower chamber normally fills with boost until the pressure overcomes the pressure of the wastegate spring and opens the valve, relieving exhaust pressure, and thus boost. The lowest amount of boost you'll be able to run depends on whatever pressure that spring is rated at.

In an electronic boost controller set up, the upper chamber is also utilized. The upper chamber's pressure contradicts the lower chamber, in that when the upper chamber fills with boost, the two forces cancel and the valve remains shut (meaning you boost more). If this sounds a little convoluted... Look at the diagrams at the bottom. Keep in mind that this is not how a manual boost controller works.

It'll need a feedback loop so that the system can keep the boost stabilized.

Once you get the basics down, you can add features like an LCD read-out, or multiple boost settings.


By the way, from the looks of it, I'd say that turbo is good for up to about 20psi; but that's purely speculative.

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[4UH8ERS]

By the way, from the looks of it, I'd say that turbo is good for up to about 20psi; but that's purely speculative.

VelocitàPaola i believe thats the Mitsubishi TDO4H-15G greddy used in there turbo kits for awhile. They were known i believe to run at 15psi extremely efficiently 20 psi is very possible. That is an educated guess though i could be wrong.

 

[mavisky]

Flange is odd, my guess is it's an MHI unit for an Isuzu truck. Same place our beloved 20g's come from.

3000gt's came with 9b's actually, and they're dinky little bastards.

 

[SittingRS]

sounds great.... i'm glad i didn't throw the thing out ... i am planning on purchasing forged pistons and eagles rods... what compression should i get... hearing your views makes me happy because i was planning on running around 15-20 psi

 

[4UH8ERS]

sounds great.... i'm glad i didn't throw the thing out ... i am planning on purchasing forged pistons and eagles rods... what compression should i get... hearing your views makes me happy because i was planning on running around 15-20 psi

This is what i got and i love it. 8.6 compression would be your best bet.

http://www.howellautomotive.com/index.asp?PageAction=VIEWPROD&ProdID=377

 

[VelocitàPaola]

3000gt's came with 9b's actually, and they're dinky little bastards.

Oops, I Googled "15G" and I guess I didn't read enough: they said the 15G is an upgrade for the Stealth/3000GT, not the stock unit.

 

[SittingRS]

whats the dif. between a bov and a waistgate or should i open a new thread?

 

[VelocitàPaola]

whats the dif. between a bov and a waistgate or should i open a new thread?

Don't bother, just research... it's been asked and answered a million times before.