tdo6vstdo5h 20g

[fwdeclipse]

I have an option of one or the other. I can get both of them for about the same price. I just dont know which one to go with. I have heard the o6 wheel kinda sucks and is not as good as the 06h wheel. Has anyone actually used the 06 wheel in a 20g. I need to know fast so i can make a decision before they get sold. Thanks guys.

 

[Boosted98gsx]

TD06. It will be a bit laggier, but will hold up better in the upper boost ranges.

 

[fwdeclipse]

So do you know someone who has used the 06 over the 06h and they liked it. I just dont wanna make a mistake. I think it was steve93talon who said the 06 wheel sucked. I have been reading for hours and cant find any real evidence if its good or bad.

 

[hopwoodp]

Check out this thread. It discusses what you are looking for. http://www.dsmtuners.com/forums/showthread.php?t=263510

Here is another one - http://www.dsmtuners.com/forums/showthread.php?t=161670
And - http://www.dsmtuners.com/forums/showthread.php?t=239840

 

[fwdeclipse]

Well I went ahead and bought the tdo6 I hope it works out good. Thanks for the help.

 

[JusMX141]

I've spoken to a few turbo guys about this issue since I opened my post a while ago. Here's the answer I got:

The TD06 wheel is just a large version of the TD05H. To look at them from any angle, they're practically identical in shape and blade angle/trim. The only difference is the size, of course.

The TD06H is in a league of it's own. It's blades are much wider and at much less of an angle than the TD05H/TD06. It almost looks like something you'd find on a Garrett hybrid....almost like a wider TD06 wheel that has been clipped.

I suppose the wider blades allow the turbine to catch more exhaust, but the angle of the blades being less steep when compared to those of the TD06 wheel make it flow much better on top.

 

[GSXspeeddemon]

Not to hijack your thread but is this a TDO5 TDO6 or TDO6H

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[hopwoodp]

If you pull off the turbine housing I may be able to tell you.

Here are some links that show the difference - http://www.roadraceengineering.com/parts/turbos/tdo5-vs-tdo6turbinewheel-2.jpg
http://www.roadraceengineering.com/parts/turbos/tdo5-vs-tdo6turbinewheel-top.jpg
http://www.roadraceengineering.com/parts/turbos/tdo5-vs-tdo6turbinewheel.jpg
Clipped and unclipped TD06 http://www.roadraceengineering.com/parts/turbos/tdo6-unclipped-clipped10deg-side.jpg
TDo5H clipped and unclipped - http://www.roadraceengineering.com/parts/turbos/tdo5-unclipped-clipped10deg-side.jpg

 

[420a-t]

So, if I wanted (which I do) could I use my evo3 16g and get a 20g compressor wheel and get it balanced and have a tdo5 20g? Would I need anything else? If that's all I need, sounds like a very good upgrade for the price.

 

[JusMX141]

Not to hijack your thread but is this a TDO5 TDO6 or TDO6H

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It appears to be a TD06 from a glance. It seems much bigger than a TD05H, but the fins on the turbine are the same shape and angle.

I still base my knowledge on the fact that without removing the exhaust housing and doing measurements, you may never know.

 

[JusMX141]

Nice pics, Hopwoodp....but I can never find any good pics of a TD06H turbine compared side-by-side to a TD06. I will very soon, though....my buddy's buying an FP Green for his 2G TSi. I'll be sure to take plenty of pics compared to one of my TD06 20G's before it goes on the car.

 

[Steve93Talon]

It appears to be a TD06 from a glance. It seems much bigger than a TD05H, but the fins on the turbine are the same shape and angle.

It looks small to me, the outlet is bell ported, the wheel exducer itself isn't nearly as large as the opening. If it was an 06 or 06H, the wheel would be as big as the outlet.

 

[JusMX141]

I see what you're saying, and you could very well be right. The housing looks to have been machined with a step in it to improve flow- similar to the Bullseye Power TD05H housings I've seen in the past....however the step on a TD05H housing that has been machined is usually much bigger than the step in this housing.

Here's a pic I took earlier of a TD06 versus a TD05H in a machined turbine housing. Notice the amount of step on this turbo versus the one shown in the earlier post:
http://i239.photobucket.com/albums/ff165/jusmx141/20Gs4.jpg

It's sort-of an optical illusion as well because of the depth of the wheel into the housing.

Again, you can't tell without literally tearing it down and measuring the wheel....but as a rule of thumb I've always quickly judged turbine size by the inside diameter of the outlet of an UNmachined/UNstepped turbine housing (where the o2 housing mounts):
2"= TD05H
2-1/4" = TD06
2-3/8" = TD06H

 

[DiamondStarAwd]

So, if I wanted (which I do) could I use my evo3 16g and get a 20g compressor wheel and get it balanced and have a tdo5 20g? Would I need anything else? If that's all I need, sounds like a very good upgrade for the price.

bastard 20g.

Buddy had one. Think the best he ran was a 12.0 in a full weight 2g

 

[chavez408]

br20g = badass turbo

 

[fwdeclipse]

Ok so i got the tdo6 20g. Will my banjo bolts for my water lines from the 16g work on this 20g. I thought I heard that the td06 has a bigger banjo bolt?

 

[JusMX141]

I don't see how that's possible; 16G's and 20G's use the same center housing.

 

[Steve93Talon]

Ok so i got the tdo6 20g. Will my banjo bolts for my water lines from the 16g work on this 20g. I thought I heard that the td06 has a bigger banjo bolt?

Coolant lines should be the same, but the oil feed thread might be 1.5 instead of 1.25. I've seen them come both ways. If it's different, whoever you go the turbo from should've supplied the correct bolt.

 

[fwdeclipse]

Man im so tired of getting screwed over the internet. I got the turbo today and Its not even a td06 its clipped td05h. I measured my s16g right next to it and the exducer is the same or whichever one is at the bottom not sure if that is inducer or excucer. To top it off the turbo is pretty much blown it has enough play I can touch the compressor wheel to the housing. Will it tighten up enough with oil or does it need a rebuild. Do you think I could get away with buying seals and changing them out and not doing any balancing on it. I am so pissed right now I could scream. If I would have known this one was a tdo5h I could have bought a much nicer tdo5h I knew was in good shape for less money but I really wanted the bigger wheel.

 

[chavez408]

not to be a dick bro, but that is one of the reason I dont buy nothing online that is used that is worth more than $100.

 

[fwdeclipse]

Yeah well that was the last thing I will buy used for ever unless I see it first in person. That really did not help me though.

 

[JusMX141]

Man im so tired of getting screwed over the internet. I got the turbo today and Its not even a td06 its clipped td05h. I measured my s16g right next to it and the exducer is the same or whichever one is at the bottom not sure if that is inducer or excucer. To top it off the turbo is pretty much blown it has enough play I can touch the compressor wheel to the housing. Will it tighten up enough with oil or does it need a rebuild. Do you think I could get away with buying seals and changing them out and not doing any balancing on it. I am so pissed right now I could scream. If I would have known this one was a tdo5h I could have bought a much nicer tdo5h I knew was in good shape for less money but I really wanted the bigger wheel.

99.9% of the time, if you find a used 20G it's NOT a TD06H. They're the most rare to find used because people who have them don't want to sell them.

Although oil will tighten the journal bearings up slightly, there shouldn't be more than .008"-.010" lateral movement....which is about the thickness of (2) sheets of paper. Axial movement (in/out) should be less than .002".

This measurement should always be taken with oil on the journal bearings.....if the turbo has sat for more than a few days, turn it upside down and pour about two ounces of oil into the oil drain flange and give the oil a while to flow into the bearings. Place a drain pan under the turbo, then flip it right side up again. Allow the excess oil to drain a few seconds, and spin the turbine a few times to distribute the oil evenly over the journal bearings. Now recheck the lateral and axial play of the shaft. It will tighten up a bit, but if it's in excess of the measurements I've given above then it must be rebuilt.

If you must rebuild it, you can do it yourself fairly easily. You can mark the alignment of the compressor wheel on the compressor shaft if you really want, but Mitsu turbines and compressors are balanced individually so their alignment isn't really critical. Be advised that the compressor nut on almost all Mitsu turbos is left-hand threaded (with the exception of some older 14B's with part numbers ending in 01010 and 01410.) If you aren't careful, you can snap the turbine shaft.

A full rebuild on a Mitsu turbo takes me around 3 hours to do, but I don't cut corners. All parts are well-cleaned and the center housings are media blasted with baking soda to remove all oil coking. When my turbos are done being rebuilt, they usually look like new:

http://i239.photobucket.com/albums/ff165/jusmx141/Small16G1.jpg
http://i239.photobucket.com/albums/ff165/jusmx141/Small16G4.jpg

If you have any questions about the project, feel free to PM me.

 

[JusMX141]

I measured my s16g right next to it and the exducer is the same or whichever one is at the bottom not sure if that is inducer or exducer.

In addition:
The INducer and EXducer of turbine and compressor wheels differ in that the air flows IN and EXits in different locations on each wheel.

The compressor (cold side) wheel's INducer size is the outside diameter measurement of the fins where it draws air in; at the intake. The compressor's EXducer size is the OD measurement behind the cover, where the compressed air exits. The inducer size of a compressor wheel will always be a lower number than the exducer.

Contrarily, the turbine (hot side) wheel's INducer is the outside diameter of the wheel where the hot air from the manifold enters the exhaust housing, inside the turbine housing. The turbine's EXducer is OD measurement of the fins where the hot air exits the wheel, usually visible when peering into the turbine housing where the exhaust exits. The inducer size of a turbine wheel will always be a higher number than the exducer.

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