Supra turbo on a KA

[apoorboy]

Hey guys my friend just gave me the turbo off of his 1991 toyota supra. He bought a new turbo. My question is would this turbo work well on the KA? Because the turbo was on a 3.0 6cyl do you think it would take to long to spool or do you think the turbo is just to big for the KAde. later

[Checkered-Member]

sorry for the dumb question....what turbo is it exactly?

Not too familiar with Toyota

[D-UNIT]

it's is the same turbo as an MR2. It's a GT26. Only the exhuast side is different. Bigger opening for higher flow.

[03frontyka24]

That is a tc-26 turbo, I have no specs for it, but it only supplied 7psi to the 3 liter engine, It likely would work, but is probably a fairly small turbo.

[95_240sx]

no, its actually a CT26 youre thinking of.

Rick

[node]

The sort answer is YES it will work.

On the 2.0L 3Sgte the same exact CT-26 turbo wont push much more than 12 PSI once you go beyond 6k RPM. The compressor is supposed to be efficient to about 14PSI though. This makes it a good choice for our 2.4L engine. The CT-26 was my first pic but I couldent find one in good shape (Check for shaft play). another benifit is the internal wastgate can save you $$.

If you decide to use it you may not need to use the whater cooling lines since some of the MR2 guys run without them and dont seem to suffer any adverse effects.

Heres my old SW20 MR2http://www.devilmotorsports.co...m.htm

[apoorboy]

Thanks guys,I am going to pickup the turbo.later

[voddka]

I haven't seen a manifold with a CT26 flange to this day, so that aspect of it may be difficult, but the turbo is still a good choice nonetheless.

[andrave]

yeah it would be a custom job.

[WDRacing]

Any turbo for that price is a good way to start...heh. I'm a big fan of free myself.

I actually had the CT26 pushing 20 psi on a friends MR2, we had a vacuum tank installed inline to the actuator so it would hold boost without opening, it was a ghetto rig though. The CT26 should do well up till 10 psi or so on the 2.4. Much more then that and she'll become a heat pump. Best of luck and happy boostin...

WD

[JustinM]

Actually it's a good sized turbo. My brother and I just rebuilt his 88 GTE supra engine (haven't started it yet, tomorrow it's on!) and I wouldn't hesitate to try the turbo on my 240. It's got the common round port flange with the square bolt pattern. I can't remember the size off the top of my head.

[andrave]

ct26 came on a couple different applications, I think they were a different size from the jza70 to the mr2 but I'm not sure.they were also used in the all trac celica but I am almost positive that is the same as the mr2.

[node]

The CT-26 was exactly the same turbo on the all track and the MR2. It had a different housing when used on the supras since they had more exaust flow. If you are VERY lucky you can find one with a ceramic turbine out of the jspec cars. Those flow a bit more and spool sooner.

[JJ240]

Im actually planning on doing the same thing in the next few months using a CT-26. You should look into the twin chamber exhaust housing for faster spool. Found one that went on ebay for $25. Should have jumped on it but oh well :-\. Anyone know if the seals in the CT-26 have to be replaced if the housing is removed and replaced with same or a new housing? I pulled the housing off to clock it and try to make a bracket for the actuator. I really dont want to pay to have it rebuilt...kinda defeats the purpose of using a cheap turbo :-)

[D-UNIT]

I was going to use the mr2's ct26. but it is rated at 11.8 psi stock boost. I would need a 1000 dollar feul upgrade to run it. Also the flange to mount would be kinda difficult to make. It's kinda looks like the bolt pattern of a water pump.

[node]

Nonsense, The flange is similar to that of most smaller turbos. Actually looks similar to a T25 but bigger. Kinda rectangular rather than squair. You can buy adapters to hook it to a T3 flange. As far as tuning goes the stock WG actuator should open right around 9psi for US model WG. The system was designed with dual boost levels from the fatory by using a bleeder valve. When the car was cold it would only run like 5-7 psi controlled by a solenoid. If you go to home depot and make a bleeder valve thats all you will need to run the CT-26 at low boost.

[D-UNIT]

wow! where do I find adapters? I still don't think I could run even 5-7psi on stock 240cc's.

[3rD GeAr]

the flange they may be somewhat difficult would be the output fllange but u could pick up the stock elbow or even get an aftermarket dp for an mk3 supra an mod it a little.a little pricey though.http://suprastore.com/defcondownpipe.html

[node]

You will have to use the MR2 T3 adoptor plate. The one for bolting a T3 style turbo onto the MR2 mani. Only you will be using in the other way around. Looks so me all you would have to do is machine out the bolt holes. You can find a T3 adaptor that you can machine out here.

http://www.jgstools.com/turbo/ct26adp.html

I like the Idea of using the stock supra DP.

[D-UNIT]

Thanks for the info , but that is not what an MR2's ct-26 flange looks like. That is the supra one , yes. The MR2's flange seriously looks like a water pump's outline.

[D-UNIT]

Here , it kinda looks like this.

http://www.jimwolftechnology.c...D=442

where can I get a flange to fit something like this???

[IvoryJ30t]

the downpipe is 5 bolt, but the input flange is still square 4 bolt.

[3rD GeAr]

http://www.jimwolftechnology.c...D=266jim wolf also has 5 bolt discharge flanges

[WAbernethy]

I'm running a CT26 on my KA. Spools pretty quick and pushes 9 psi to redline. I got a log style manifold kit from iboost.org. They provided the inlet flange and the outlet side I made from the Supra one. Not sure if their site is still down but you'll have to contact them directly about getting the CT26 flange. The kit was only like 140 bucks. I had to rotate the center cartridge and the outlet elbow had to be made 180 degrees out from the stock one.