so you want to increase your bottom end torque on your 3B? (1 Viewer)

[gerg]

Naw there is no fawk off at all dude, just some chit chat. I would love to screw around with the Ct26 family, ok that sounds bad... im sure you know what I mean, but Toyota is so tight with its compressor maps I have never found one. Now, one could measure the boost and turbo outlet and inlet temperature and find the effeciency of the compressor. That would give you a much much better idea of what it is doing.

 

[Dougal]

so is the GT 2052 a little bigger than this turbo?

Yes. The GT2052 is big enough to take everything the 3B can throw at it.

 

[gerg]

The specs on the GT2052 and the TD04L are so similar its crazy. Except the GT has a turbine A/R or .50 and the TD is .41. Ill post up some specs later for comparison, but the kids are in the bath and it would suck if they drowned.


Which trim 2052 was that Dougal?

 

[Dougal]

The specs on the GT2052 and the TD04L are so similar its crazy. Except the GT has a turbine A/R or .50 and the TD is .41. Ill post up some specs later for comparison, but the kids are in the bath and it would suck if they drowned.


Which trim 2052 was that Dougal?

52 trim compressor with 0.51 A/R cover. Turbine 72 Trim 47mm with A/R 0.5 inches.

 

[gerg]

So the GT2052 turbine is 47 inducer 72 trim/ compressor 37.6/52.2
TD04L turbine 46.8 inducer 77 trim / compressor 40.64/ 56.01
Looks like the same rotating mass pretty much with the GT flowing more exhaust in housing size (.50A/R vs .41) and the TD04L flowing a little more on turbine trim (77 vs 72)
The TD will spool sooner, but the GT will run less backpressure at higher rpms.
The GT does 78% in the middle vs 76% for the TD04L for efficiency
Its a toss up for me cus the GT will run with less back pressure up top, but the TD has a better compressor. That is kind of a mute point considering the td04L would choke out at higher rpms and would not let you run past 3000 anyhow (my guess). Both compressors could do high boost in very low rpms and it would be extremely difficult to get them to surge.
It looks like the GT is designed for broader operating efficiency range, where as the 13T is very specific and able to handle gobs of boost. That is not to say this little turbo can make gobs of boost, just the compressor is able to.

Here are the compressors mapped for 12 psi 1000, 1200, 1450, 1700, 1950, 2200, 2600, 3000 rpm

 

[moosecruiser]

As anecdotal information the turbo has changed the way I drive . Short term info here . I no longer rev past 3000 rpm it is not required anymore to make and keep speed up in the 60 . Formerly I would have to rev rpm's to the limits just to keep up speed and or engage highway driving . Cruises comfortably on the highway 110-120kmh @ 2300- 2500rpm . As for city drivin I am finding the rpm zone I am mostly in is 2200-2800 in all gears .
With my factory 3b muffler and exaust the truck is quite quiet and works great .
I am running 33" Bfg at ko 10.5 tires
Next project for the truck is acquiring 16" rims for my Michelin military tires . 36" tall 9" wide . I wheel one weekend out of every month without fail and some weeknights time permitting I hit a trail near home . This turbo is a vast power improvement for me . My only complaint is my fuel consumption is way up , however since I am running WVO ( waste vegetable oil ) who really. Cares if you spend 20 $ instead of 10$ on 1200km round trip .
Just another silver lining .
Mike , moose

 

[jfc]

Thanks for the info on the GT 2052 in comparison to this turbo. I guess the GT is a safer option if I am going to let my wife (or my kids when they grow up) drive the truck, with their heavy right feet.

 

[cody c]

yep, what not to do and who not to listen to...
we all have our learning curves some are just more costly than others.

Thanks wayne, my turbo is off a ford/merkur xr4ti.

Bought it used, havent rebuilt it, and it does the trick.

I definately did a budget build, but it was lots of fun and quite rewarding.

stock manifold, nickel-iron welding rod used to burn on some steel to make a turbo manifold, but it works.

With the 3B they are fairly underpowered, so having a turbo that boosts at higher rpms isnt what I would want if I did it again.

Why?? try climbing a hill where all your power is at the top end, you dont end up with access to that power because your almost starting to get the rpms high enough when you get to the top, but by then youve over fueled it and your driving by the pyrometer at that point, in other words un-accesible power.

Of course you can get a little more by playing with tire size and gearing, but with my merkur turbo I definately wouldnt want the it boosting any later. It may boost a pinch on the late side but with a few tweaks and a better manifold I would say it is optimal.

Now that Im planning on swapping it into a hilux I may try building another manifold to clean things up and get another hp or two out of it.

 

[ToyRoverlander]

Awesome info! Thanks for the effort Gerg!

I so want a turbo now!

 

[gerg]

Ahh no problem. Cody is your turbo a .48 or 63 housing? When do you get boost under full load and what is your max pressure? The 60 trim is a good all round compressor even for the 4L engines.

 

[cody c]

Ahh no problem. Cody is your turbo a .48 or 63 housing? When do you get boost under full load and what is your max pressure? The 60 trim is a good all round compressor even for the 4L engines.

Not sure what the size is, its off of an 87 or 88 2.3 cosworth I4 merkur though.

Im 15+ psi by 2600 or so.

I havent driven the 60 in quite a long time so Im not positive of when what boost comes on.

Im hoping to have it running in a hilux carcass by summer, so I can give better feedback around then.

 

[Dougal]

If anyone wants a high rpm turbo. The CT26 from the supra is it.

 

[fj-rankenstein]

i am curious if this is the same garrett turbo mentioned above (52 trim compressor with 0.51 A/R cover. Turbine 72 Trim 47mm with A/R 0.5 inches.) that is sold in the "diesel 42" turbo kit here on mud???

 

[Dougal]

i am curious if this is the same garrett turbo mentioned above (52 trim compressor with 0.51 A/R cover. Turbine 72 Trim 47mm with A/R 0.5 inches.) that is sold in the "diesel 42" turbo kit here on mud???

Yes, the same. I did the turbo sizing for that kit.

 

[ToyRoverlander]

You can get the flanges and gaskets too. http://www.ebay.ca/itm/370047922792?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649 You can search for TD04, TD04L, or sti turbocharger, WRX turbocharger, 13t turbocharger. Just an FYI

Interesting....

What I'm wondering. When using these, how do you fit a dumppipe to that oval shaped flange?
Or do others usually use a closed flange so to speak with just the opening for a 2.5" dump pipe??

 

[gerg]

For me it usually involves some serous time consuming overly elaborate fabrication with tons of die grinding.

 

[Dougal]

Take a piece of tube, bend, cut, split, spend an hour or so cutting, trimming and bending a patch to fit.

That said, in my current setup the wastegate is clamped shut anyway. I could have saved a heap of fabrication time.
I have seen other dump-pipes which started with a tube flared to a larger diameter and squashed to an oval. It fit quite well.

 

[ToyRoverlander]

Whahaha... I thought it would be something like that

thanks

 

[tmarx]

The specs on the GT2052 and the TD04L are so similar its crazy. Except the GT has a turbine A/R or .50 and the TD is .41. Ill post up some specs later for comparison, but the kids are in the bath and it would suck if they drowned.


Which trim 2052 was that Dougal?

Would appreciate your input on my Mitsu TD04 H please.

 

[gerg]

If you can tell me what it is off of and what year it will help figure out the compressor. On the exhaust housing there will be a number in the casting that says .50 or .60 or something like that. That is the CM reference. Im sorry, but I didn't have the time to search your build thread to find that info.