Need some help with a mitsubishi turbo

[mainlander]

Hey folks. I purchased a mitsubishi turbo which was off a Subaru impresa WRX (NON STI) TD04L 13T turbo with part #49377-04300. The motor this turbo came off is classified as 2.0L 176HP

I have looked all over the net for some possible a/r number's but haven't been able to find any. Now I understand that there can be a couple of possible combinations and I also understand that it's more about the turbine sizing than the compressor sizing.

Anyway, if anyone can find me a link to this turbo and what the a/r size might be I would feel a little bit better buying it although it wasn't really that expensive so I think of course I'll give it a try.

 

[Dougal]

What do you intend to use it on?

I don't have any information on that particular turbo, but comparing the boost delivery to other 2L turbo motors puts it around garrett T28 size.
Probably a good match for a 4.2L engine, but quite big for a 3B.

 

[crushers]

Hey folks. I purchased a mitsubishi turbo which was off a Subaru impresa WRX (NON STI) TD04L 13T turbo with part #49377-04300. The motor this turbo came off is classified as 2.0L 176HP

I have looked all over the net for some possible a/r number's but haven't been able to find any. Now I understand that there can be a couple of possible combinations and I also understand that it's more about the turbine sizing than the compressor sizing.

Anyway, if anyone can find me a link to this turbo and what the a/r size might be I would feel a little bit better buying it although it wasn't really that expensive so I think of course I'll give it a try.

contact a GOOD turbo shop and they should be albe to make proper recommendations and find out the ratios...

 

[Entaran]

Inducer: 46.8mm
Exducer: 41.2mm

Turbo is off a WRX 00- on
Also on 2.5 litre legacy/liberty in the sequential twin turbo setup (as the bigger turbo)

Also available with a 56.0mm inducer

A/R exhaust ratios are usually either 0.58 or 0.63 on standard subaru equipment. The thrust bearing (instead of ball bearing) cartridge will boost a few hundred RPM later however.

 

[mainlander]

Wayne thanks for the suggestion. I figured you'd say that I'll give a shop a call though and see if they have any information on this particular turbo and I'll report back. I really don't mind educating myself and trying to do this with the help of others here at Mud and some online reading as well as reading some books on the subject. It may not be the wisest thing or most ecconomical in the end (taking my $/hr into account), but there are many who have been quite successful with the "home built" turbo set ups on their rigs. Besides there's great joy in the journey for me as well.

I did find another site last night after posting this thread. http://www.stealth316.com/2-turboguide.htm had a ton of good information on Mitsubishi turbos and some information on the TD04L housing as well. Looks like two of these turbos are used for a twin turbo setup on the Mitsubishi 3000GT and Dodge Stealth cars.

After reading through this persons site and the information he gives about the turbo, I think it could actually be a bit on the small side which would give better initial boost but may lack the higher RPM boost for highway use.

Dougal, I plan on putting this on my 83 BJ60 with 3B engine. Are you just relying on what you know about other 2.0L turbos to suppose that it's comparable to the Garrett T28? No hard data? Have a read through the stealth 316 site and see what you gather from that information. Further down the page the author states that Mitsubishi doesn't use the a/r designation for there housing sizes, rather they just use the area of the inlet on the turbine housing. And if the TD04L housing is a 6cm^2 it is suggested that it's comparable to a 0.41 a/r housing.

I would really like to contribute more to this site and even if this turbo is a flop or isn't quite up to snuff I still don't mind going through with it. Now if it turns out to be a good fit for the engine, this will certainly help others too.

 

[Dougal]

Dougal, I plan on putting this on my 83 BJ60 with 3B engine. Are you just relying on what you know about other 2.0L turbos to suppose that it's comparable to the Garrett T28? No hard data?

I'm basing that off the wrx's I know of and comparing those to other 2L engines which use a T28 (nissan). It's only ballpark, not hard data.

I've been to the stealth site before, interesting read.
To know how big a turbo housing actually is (relationship of gas speed to wheel rpm) then you need to know both the turbine (exhaust side) wheel OD and the A/R ratio of the housing.
Multiply the A/R ratio by the wheel radius (make sure you've got the same units) and you get an effective flow area. Bigger numbers = bigger flow capacity.

If the number that mitsubishi give is the neck area where it enters the scroll, then you need to divide that by the radius of the scroll (centre of area to centre of shaft) to get an A/R number for that housing. Garrett A/R ratios are in units of inches. IHI A/R ratios are in units of millimetres.

IMO that turbo is a little too big for a 3B or 13B. It'll work but you won't get much low end boost.
If you find out which turbo and exhaust housing combination mitsubishe use on their 3-3.2L diesels you'll have enough information to make the call.

 

[Tapage]

Some Mitsu turbo maps ..

http://www.not2fast.com/turbo/maps/

 

[Entaran]

TD04's are equivalent to 0.56 A/R and TD05's are 0.63 A/R (Numbers are near enough to these "standard" figures anyway)

Hope this helps.

 

[mainlander]

Any chance Entaran on a location on the net for these number?

It does help.

Shot for the moon right

Thanks everyone for the help, now I just need to learn how to read that turbo map .

I'll keep you all posted of course with the progress of this install. It might take a while though, I'm going to make my own manifold too as I have access to a machine shop and the steel will be next to free as well as the welding and machining. Beer will go a long way with the right people

 

[Dougal]

A/R ratios aren't any use unless you know the diameter of the turbine wheel inside.

Here's a source for that.
http://fc3spro.com/TECH/TURBO/tmodels.html

With a 1.86" turbine wheel and .63 inch A/R housing the equivalent flow area is 0.59 square inches.
That puts it halfway in turbine size between a T25 with a 0.48 and a 0.64 A/R exhaust housing.

 

[Fatbob]

progress?

Mainlander, any progress on this?

 

[Fromage]

I have a friend who put a TD04 turbo on a 3B and it worked swell. He had secured the efficiency maps for both a Garrett an the IHI turbo, compared them and the TD04 came out ahead. I don't remember all the specifics as it was a few years ago. It was from a WRX and they were plentiful an cheap as everyone upgrades them.

 

[mainlander]

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