MHI 24v Compressor Wheel?

[toofast82]

While browsing through Ebay, I have come across several MHI turbos with the 24v compressor wheel. It is said to flow 800cfm. I have seen it mated with the tdo6sl2,te06h,tdo6h turbine wheels. Obviously you can have a bolt on housing machined to make this a direct bolt on.
Compressor: 24v
55.5mm inducer/ 77.9mm exducer
Turbine options:
54mm inducer/ 61mm exducer- TDO6sl2
55.8mm inducer/66.3mm exducer - TEO6h
58.8.1mm inducer/ 67.2mm exducer- TDO6H

I would think with this size compressor mated with one of these turbines, you would have a pretty good spooling street turbo capable of 500whp

The compressor is bigger than a 20g(52.5mm/68mm) and smaller than a 25g(60mm/78mm) and slighly smaller than an HX35(56mm/81.8mm)HX35 turbine(60mm/69mm)
This TEO6h turbine could be a nice turbine as well as it is in between a tdo6/o6h. All of these turbine options are smaller than HX35 turbine and we've seen how well they spool on our dsms. It is possible the tdo6sl2/te06h turbines may have a hard time keeping up with the 24v compressor at high boost(25+psi)

Does anyone have any experience with this compressor mated with any of these turbines? Just kind of curios as it looks like a nice street option with good spool! I have been unable to come up with a compressor map for the 24V as well

 

[Weapon-X]

Interesting............. This indeed looks doable.

I'd imagine this would have really nice street manners with great results.

What applications do these turbos come on?

 

[toofast82]

Im not sure there is an actual application for these. I see them with T3 inlets and and various outlets, but none of the normal 4 or 5 bolt discharges. These range in price depending on vendor from $500-800. It wouldnt cost very much to have a turbine housing machined for the correct turbine to make this a bolt on.
There are quite a few turbos options available to us that are effective in the 500-550whp range that have good spool characteristics. Im not saying this is better/worse than the others. I just think with these turine options and compressor capability, the 24v would have great street manners and spool like a rocket. I already have a 20g that i'll be using this year but this may be an option for next or later on this year.
It would be nice to see a compressor map on this!
Im just curious given the stats and turbine options, what people think of it

 

[Weapon-X]

I'm really looking forward to see if any others chime in as well on this. I'm just kind of surprised with as ingenious as DSMers are, that no one has put one of these to use.

If I didn't have a brand new Mitsu 20g sitting here I think I would give it a try.

I'd love to try the 24v compressor mated with the TEO6h in a T3 housing.

On paper it works.............. and with past results of somewhat similar Mitsu combos this thing looks like it would rock on a street set-up and probably give you something to brag about at the track.

Damn man, somebody's got to have some more info on these.

If you come across anything interesting please post here.

I know I'm interested.....................

 

[toofast82]

I think it would be better mated to a bolt-on Bep housing with 8cm .55ar and maybe better with the .70ar t3in/mitsu out, but would spool super quick with a 7cm housing! The 7cm .48ar may become a flow restriction at high boost though

 

[Weapon-X]

.70ar t3in/mitsu out

That would work for me.

I think I would rather sacrifice the small amount of added spool associated with this to take advantage of the good that can be had.

This seems like it would be a nice match-up to run higher boost............25lbs or so.

God................ This has me thinking........................

I wonder if the 10cm housing that's used on the Hahn turbo's could be machined to accept the TEO6h wheel.................... I mean, I'm sure it could but co$t really comes into play when you start adding up the totals.

I'd be willing to try the 24v compressor with the TEO6h wheel into a re-machined Hahn 10cm turbine and use a Holset actuator to keep an internal gate.

I too wonder what the compressor map looks like for this........................

 

[toofast82]

I also think without the internal actuator and maybe with it, that you could probably fit the stock radiator fan. Im curious as to what oil lines these will take, possibly stock oil lines which would save some money as well. You could get the hahn 10cm housing machined as long as the turbine that was originally in it is smaller. A 10cm housing is equal to .70ar though. I have seen this compressor with all three of the above mentioned turbines but was most common with the te06h

 

[Ceddy]

Have you found a compressor map for that wheel?

Some of the MHI compressor wheel do not perform well on our motors.
People tried using the TD06 17C and 19C wheels back in the day and they sucked big time.
The compressor has to have good efficiency at a pressure ratio and flow that matches our motors VE, displacement, rpm range, and boost level.

The MHI G series wheels work best for us. Never heard of the V series though.

 

[toofast82]

The C wheels are single vaned and have many blades like the 14b, that is why their high boost performance sucks. This is a 7blade design and I read somewhere that the wheel is similar to extended tip.
Havent found the compressor map yet though

 

[93blueGS]

Those measurements (compressor and turbine "td06sl2") are almost the same as a 3076r..

 

[toofast82]

I was looking around as well and noticed that the TEo6h turbine is very similar in size to a Garrett T-31 turbine

 

[dsm-onster]

Typically MHI and compressors use less blades at the inducer than other manufacturers to deal with the cavitation of blades at high velocities. Which in turn increases flow. The have axial blades at the inducer that do not discourage cavitation on it's own for the sake of overall weight savings to encourage a faster spool. The 24v has 7blades instead of the 2g having 6blades. This will take away some flow but it looks like the angle of the blades more favors a reduction in cavitation. Depending on the height of the compressor wheel (distance from the inducer to the backplate), there could be anti-cavitation tech in there.

The larger number of blades goes in hand with having a larger exducer. A larger exducer generally achieves a boost threshold earlier because more work is imparted on the airflow. The larger number of blades trailing edges at the exducer increases the Busemann slip factor which in turn helps efficiency, but reduces flow because of viscous resistance (more surfaces for the flow to contact), and cavitation. There's a good chance the blades here are backswept to a shallow angle to the compressor volute which would require more blades to keep velocity up. This technique is used to increase slip as well (slip increases efficiency at the expense of a little flow/velocity). But also means that the compressor has to do less work on the fluid and less work has to be extracted from the exhaust by the turbine. Compressor RPMS go up and good flow is maintained until exducer tip speeds generate too much cavitation to flow.

MHI consistantly builds for flow and tries to cheat to a fast spool (successfully). So the higher number of blades would indicate that this compressor will really be quite a bit more efficient. But unless the exducer tips are much more back swept than a 20g and the inducer uses a much taller axial design, the larger number of blades would about cancel the larger inducer at choke, maximum flow. Seeing the whole compressor wheel at different angles would give a better guesstimate.

If course it is speculation either way with this. And I really want you to find out . Anecdotal evidence at the track would confirm the flow at least. I don't think it would flow less than a 20g. And it certainly would be more efficient. Which would lead it to perhaps even spool quicker. Where did you get the 800cfm number?

The turbine wheel is VERY "diesel" in design. A large difference in the major and minor diameters, to extract the most work from a cold slow moving exhaust gas. I'll guarantee you that it spools at least as fast as a td06sl. You have much more moment of torque on the shaft with that turbine major diameter and the same exit flow. A larger a/r housing like the 10cm^2 housing would work GREAT with this turbine wheel. Much like the hx35 turbine wheel (diesel wheel) likes the stock 12cm^2 housing with a non-divided manifold, which makes the housing quite large in a/r to the exhaust gases.

 

[toofast82]

Thanx a bunch for the good info, dsm-onster!
I dug up an old thread from 2006 that talked about this turbo, but it didnt really get anywhere
http://www.dsmtuners.com/forums/turbo-system-tech/215275-new-mitsubishi-turbo-tdo6h-24v.html

I would really love to come across a 24v compressor map, but ive searched and cant come up with it.

 

[dsm-onster]

It does have the small hub like the evo3 16g which helps with cavitation issues as this puts the entire volume between the blades at a larger amount. Also here's a comparison of the 24v to the 60-1:

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Much more back swept exducer tips. This looks good! It should be VERY efficient! And with the larger volume between the blades and their favorable angle, cavitation will be less of a factor. This compressor was clearly built for a broad map and high boost efficiency. Looks like it will definately outflow a 20g.

20g compressor wheel is below. Less back swept blade design like the 60-1. Thicker hub and clearly less volume between the blades:

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EDIT: here's more pics of the td06h-24v-12.

 

[toofast82]

Thanx again dsm-onster!
I think this turbo would have great usable power for the street and very quick spooling capabilities given the turbine options. It should have some pretty good high boost performance as well as mhi durability. I doubt we will get any firsthand experience responses from this, but i sure would love to see the compressor map.

 

[JusMX141]

I wonder if the 10cm housing that's used on the Hahn turbo's could be machined to accept the TEO6h wheel.................... I mean, I'm sure it could but co$t really comes into play when you start adding up the totals.

Better yet, I wonder if the TE center housing would fit in place of the TD center housing that the Hahn turbos use without much correction. I know older Chrysler 2.2's and 2.5's used TE Mitsu turbos as well, but they were much smaller.

If so, you may also use the 8cm2 T3 housing from a 17C Sy/Ty turbo. It will already be machined for a TD06 wheel, so less correction will need to be made in comparison to the Hahn TD05H housings.

 

[dsm-onster]

TE06H-24V-16: Isuzu truck turbo. Looks like a twinscroll t4 flange The turbine housing seams tiny though, like all MHI turbine housings. With a divided t4 manifold, this would be interesting. I'd like to see in action a td06h 24v witha t4 te06h turbine housing cut for it. Hmmm. I'm going to be using a t4 flanged setup by the end of the year (holset he1). Maybe it could be tested.

These arn't water cooled.

 

[butlar]

Not to bring back to life an old thread, but i have that exact setup on the way as we speak. te06h-24V , with exhaust manifold with external wastegate, turbo, o2 housing , and downpipe with wastegate dumping into exhaust.

 

[xezerax]

Awesome man post up some results when you get it going.

 

[butlar]

posted a pic in my other thread "your thoughts on this turbo setup", if you want to check it out. I will deff let you guys know how it turns out, seems to me like it is a one of a kind setup.

 

[toofast82]

posted a pic in my other thread "your thoughts on this turbo setup", if you want to check it out. I will deff let you guys know how it turns out, seems to me like it is a one of a kind setup.

Haven't been on here in forever, but curious how the turbo worked out for you?