phorensic

Oh I'm going to try what I have for sure. Just looking out for the future. My original plan included a 50 trim t3/t4 with the smaller A/R turbine housing, but the cost of a used ct26 was too tempting. I've always wondered if a t3 turbine flows better than a ct26 turbine. I guess the answer to that would be the .84 A/R housing and I forget if you can use a different trim turbine (like O or P).

Weasy2k

yes the T3 would flow better...around the .8+ ar mark like you mentiuoned

My taco is going to see a True t4....1.14 exhaust....

but thats for something different

phorensic

Well you hinted at it earlier, but I didn't say anything. With a 1.14 A/R turbine I'm guessing you are above 4L in displacement. Because you mentioned all the popular 3L and smaller swaps. Tundra v8? Lexus v8? Shortstar? Northstar? LS1? Spill the beans.

phorensic

Extremely slow day here at work. Figured I would post some photos of the truck.

F0RSAKEN

What I would do if I were you, seeing as the CT-26 is very small and very cheap, run 2 of them. Twin turbo it, seeing as it IS a V-6, and has 2 exhaust manifolds, therefor the plumbing wont be too difficult.

Doing that will have 2 main benefits. One being more power potential and two being less back pressure. Less back pressure = less heat = more longevity. This will also keep the cost down because you can buy those turbos a dime a dozen from junkyards.

You will also need 2 wastegates so you will be able to dump all the boost you need (3 cyclinders running each turbo, no boost creep).

Anyway, thats what I would do.

F0RSAKEN

Another thing to add to that, that lets you attain the same boost levels with less work from the turbos, that will keep them spinning slower, and should keep your intake temps down as well.

Toysrme

motoracer47 there are atleast three 3vz-te's rolling.
I would only worry about reversion at high stock rpm levels. It wouldn't be killing you, but it's a possibility for loosing some power. Again... High stock rpm's on the small turbine.

F0RSAKEN is right about simple stress problems from turbocharging on this application. Once you get past "this engine can make this power" every basic engine concern is heat related.
Remember... The #1 cause of engine failure under FI isn't raw power (If the engine can take it); it's a race between leaning out enough to destroy a piston-piston ring land, or ring, and rod & connecting hardware snapping detonation.

If you want less backpressure, ditch the 3s-gte ct-26 for a turbo with a larger turbine & housing. If there is still a backpressure problem weld the flapper shut & install an external wastegate.

Two small twin turbo's is OK, but more complicated & provides little benifit to a single well picked turbo to the desired powerband - which is what this is. Then when you get out of said low power ranges, CT26's are pretty big to twin with. The spool time of using said medium-large turbos to twin turbo with is that you can simply run a larger turbo to begin with & come out with the same result with less parts.

If you want to twin your truck, I would be happy to. I would advise a pair of t3 42/48's -> IHI rhb52 VJ16's -> t3 60/48's -> t3 60/63's.
Pleanty of flow there.

If you want less backpressure, ditch the 3s-gte ct-26 for a turbo with a larger turbine & housing, along with a 35-40mm externial gate.

phorensic
It depends on what style of turbo you want to stay with. The ATS "ct27" is kind of a running joke, as everyone & their brother has been rebuilding CT26's with a 54, 57, 60 trim t04e, 60-1, 62-1 compressor wheel, and clip the turbine blades several degrees to flow more. After that you swap to something entirely different. Toyota's knock-off turbos don't go much farther - tho the CT20b & CT26a are not small turbo's by any means. Tho no maps are known to exist, they fall between a t3 super 60 compressor / 80 turbine & a small t04e in power production.

motoracer47

toysrme, i think were saying the same thing. i have no doubt the block can take the power, big girdle, stout casting. on the ct27, they do not clip the turbine wheel, they port the swin scroll housing for more flow and enlarge the discharge nozzles. clipping the wheel will allow the turbine less backpressure(more flow) at high rpms, but it sacrifices spool, so not the optimum solution. from the dynos ive seen, and what ive read on them from multiple people, it would seem the ct27 does hit 300rwhp on a 3sgte, just gotta have all the supporting mods, and i believe that includes cams. but many have reported same as or slightly slower spool as a stock ct26, so in my book that makes is superior to any other moded ct26. and its cheaper! ct27 is on sale 750(regular 850)
majestic is 895, seen some others for 800-850.

but at the same time, a 7m ct26 will give all the flow thats needed for the power level hes shooting for, and it can be upgraded as well, 7mgtes have hit 450-500 rwhp with upgraded 7m ct26.

Weasy2k

Your correct on the CT27 it is machined and is a prity decent upgrade.

I would avoid TT setup as it isnt as easy as it looks as there is alot less room then you think in the engine bay

BTW Nice truck man!

Toysrme

Pretty much.
3s-gte stock


3s-gte w' stock CT26 @ 15psi puts out 235whp (Sorry for a lack of a dyno)

3s-gte w' mods, CT26 (t04e 60 compressor, clipped turbine) @ 16psi.
t3/t4e 50 trim
RMR intake manifold
joe p mbc
greddy i/c (thanks again Brian)
WI
Ats inlet
Ats cam gears ex cam retarded 5 notches
safc
aeromotive FPR
3'' carsound cat
2.75 crushbent exhaust
214k miles unopened.



3s-gte w' mods CT-26 (60-1, or 62-1) w' changed turbine.











Ya know who you *really* need to talk to about the ct26 off a 3s-gte. Invite Weasy to the discussion. He's been around the 3s-gte's CT26 & it's associated upgrades for a long time.

Weasy2k

Lol,
Everyone body and there DOG can get a CT26 with a massive compressor upgrade. The one huge problem we all see is the stinkin turbine size. Its tiny!
People clip the turbine but then that leads to a unbalanced turbo (in most cases)

ATS has come out with a new style CT turbo that involves the machining of the Exhaust housing as mentioned and fitted with a different turbine (which hasnt really be explained yet) this takes some delicate work as again, everything has to be PERFECT.

The stock CT26 is a good turbo itself...lots of flow, i would suggest using a external wastegate setup and see what you can do there.
Its the turbine...turbine..

Node has done work on the CT26 and is looking at the 60-2 compressor for his next setup, good ÅÅÅÅ!
Where the hell is he anyway

motoracer47

for my swap, im thinking of a ct27, and ive already got a rare ceramic turbine wheel for the ct26 that will allow it (as a ct27) to spool better than stock(the ceramic turbine weighs half as much) but still be able to handle high flow. thats the hope anyway

Weasy2k

Spool is not a concern when your dealing with the ct26 and 3L or even the 27 ....

You got 1L on it and already spools at 2400-2800 on the 3s-gte

motoracer47

i wont have 3l on my swap, only 2.2

Weasy2k

oh right wrong person

Bumpin' Yota

TO THE TOP!!!


Forensic how goes this project?

Weasy2k

i thought he dropped the project because of something that happened....

1styota4X4

any chance it will get going again

Bumpin' Yota

no he rolled the yota...

1styota4X4

sorry to hear that


This is what i would be doing