'91 JDM ct26 questions - Toyota Nation Forum : Toyota Car and Truck Forums

niggz · 10-06-2007, 06:01 PM

Hey dudes,

I may be able to get a JDM ct26 ceramic turbo off a 91 import MR2. Would this be a single entry or dual entry turbo? I am looking to put it on an n/a 85 landcruiser

. I have been told it should bolt right onto my 3BT (3.4L diesel) exahust manifold as it had a ct26 as well.
So if it is single entry it should bolt right on? If it is dual entry will it match with the 4 to 1 manifold and I just won't get the advantage of the dual entry?

Thanks

Piddy · 10-06-2007, 06:19 PM

All 3sgte CT26's are Twin Entry with the exception of ones that came in the ST165 Celicas. You should probably look into getting a rebuilt CT26 off of a 3rd gen Supra..... the MR2 CT26 is way too small for your application.

niggz · 10-06-2007, 06:32 PM

General consesus of cruiser heads is that a mr2 turbo is more desirable. Supra turbos are way too big apparently.

Piddy · 10-06-2007, 07:12 PM

Quote:

Originally Posted by niggz

General consesus of cruiser heads is that a mr2 turbo is more desirable. Supra turbos are way too big apparently.

For a 3.4L diesel???? Even the stock 3sgte flows too much for the CT26..... I dunno.... I know nothing about Land Cruisers.... it just seems like way too small of a turbo. Even some of the MR2 guys run Supra CT26 compressors for more power.

***MR2Jedi*** · 10-07-2007, 01:01 AM

I have to agree with ishcloeobo.. The MR2 3sgte 2.0 ltr engine can outflow this turbo. I would think a 3.4 would do that easily. A recpie for detonation...

niggz · 10-07-2007, 03:49 PM

I'm not looking for huge power. I just want to be blowing a bit into it (say 6 to 10 psi) while I am cruising down the highway @ 2000rpm. I want peak psi anywhere between 2200rpm and 3000rpm. Something that spools really fast too. This is for low end torque on a 4x4 machine.

This is what I am trying to emulate for as cheap as possible. http://www.axtturbo.com.au/toy3B.html
The AXT kit goes for about $6000 to $8000!

No worries about the dual entry though. I have also just got my hands on a seized supra turbo, so I will throw the MR2 guts into the casing. If I'm not happy with it, I can rebuild the supra.

Another question I have is about the ceramic. Just how brittle is it? If it goes offroading in a clattery, rattley old diesel do you think it could just reach a point of too much vibrational stress and crack or shatter?

CompanyFlow · 10-07-2007, 05:45 PM

The CT20B is ceramic and is the JDM turbo.

***MR2Jedi*** · 10-07-2007, 07:35 PM

Quote:

Originally Posted by niggz

I'm not looking for huge power. I just want to be blowing a bit into it (say 6 to 10 psi) while I am cruising down the highway @ 2000rpm. I want peak psi anywhere between 2200rpm and 3000rpm. Something that spools really fast too. This is for low end torque on a 4x4 machine.

This is what I am trying to emulate for as cheap as possible. http://www.axtturbo.com.au/toy3B.html
The AXT kit goes for about $6000 to $8000!

No worries about the dual entry though. I have also just got my hands on a seized supra turbo, so I will throw the MR2 guts into the casing. If I'm not happy with it, I can rebuild the supra.

Another question I have is about the ceramic. Just how brittle is it? If it goes offroading in a clattery, rattley old diesel do you think it could just reach a point of too much vibrational stress and crack or shatter?

The turbo in good condition are very sturdy and robust. They do have to be able to turn
100,000 RPM's. I truely don't know about their off road capabilities. The guys do use them in off road races. Though I'm thinking you're talking about some serious 4 wheeling thru rough terrain.
The CT26 generally spools at about 3300rpm's.
Are you talking about a complete car when you mentioned the Supra Turbo or just the turbocharger ? just curious...

niggz · 10-10-2007, 05:24 PM

MR2BAD, it is just the turbo. Apparently it is seized?!

Because of the twin entry, I am thinking of mating the exaust side of the supra housing to the mr2 compressor side. Is this feasable? I have read that it has been done before for another cruiser. Would I have to get it balanced afterwards?

***MR2Jedi*** · 10-10-2007, 11:02 PM

Quote:

Originally Posted by niggz

Because of the twin entry, I am thinking of mating the exaust side of the supra housing to the mr2 compressor side. Is this feasable? I have read that it has been done before for another cruiser. Would I have to get it balanced afterwards?

I have heard of this being done. And I would think that it would need to be balanced.