Advantages on supra turbo ct26 over alltrac ct26?

Q&A regarding engines, turbos, and intercoolers and power upgrades

Postby gt4tified » Fri Nov 03, 2006 1:28 pm

syko says wrote:i think Gary meant like, 'be patient young padawan"


For real....Gary's so modest! :oops:

If I had to spend $500 to do a rebuild, I'd do like Gary and wait for a low mileage ct20b to hit the mr2/celica forums....that's what I'm doing right now but I keep spending all my money on useless parts like clutches, springs, bushings etc :D
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Postby smog7 » Fri Nov 03, 2006 5:18 pm

i dont know jack about any of the different turbos out there... anyone want to fill me in??
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Postby gt4tified » Fri Nov 03, 2006 5:27 pm

Oh sorry. The ct20b is the turbo from the ST205alltrac and 94-99 SW20mr2. I don't have the details on it...someone else can help with that, but its a direct bolt-on for the 185alltrac as it is also twin-entry, it spools faster than the ct26 and is capable of plenty more HP (they are efficient in excess of 20psi)!
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Postby smog7 » Fri Nov 03, 2006 5:42 pm

so a low mileage ct20b is pretty much exactly what im looking for then? around how much do they usually run?
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Postby toayoztan » Fri Nov 03, 2006 5:44 pm

alltrac7 wrote:so a low mileage ct20b is pretty much exactly what im looking for then? around how much do they usually run?


6-800 for a low mileage good one.

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Postby smog7 » Fri Nov 03, 2006 6:02 pm

ok cool. thanks for the info guys.. would i have to upgrade anything with the addition of a ct20b? or is it simply plug and play?
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Postby smog7 » Fri Nov 03, 2006 6:10 pm

also is anyone currently using a cr20b? i did a quik search and read that the st205 turbo is not labeled ct20b.... whats the actual history on this turbo?
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Postby db » Fri Nov 03, 2006 7:31 pm

The CT20b has a seventh stud that needs to be removed to work with the second gen downpipes and stock cat elbows. Completely plug and play otherwise.

The CT20b was never formally called that by Toyota, but that's what the Toyota crowd calls it. It came on the ST205 and the last generation of MR2 turbos overseas.

Many MR2 guys use it, but not so many of us.
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Postby smog7 » Fri Nov 03, 2006 7:59 pm

why not? whats the most commonly used turbo?? the stock ct26?
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Postby tw2 » Fri Nov 03, 2006 10:53 pm

Yes everything came with a ct26 except the st205's which came with ?ct20b? ct20's are hard to find, expensive and not worth it plus they also came with the ceramic wheel which will happily shatter at high boost. I personally would either get the ct26 rebuilt for a long happy reliable life or just get a proper large turbo t3/t4 etc with upgrades in mind for the future. I do not see the value in ct27 ct20 upgrades unless they are going to be the same as having the ct26 rebuilt. Just one opinion.
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Postby allblackalltrac » Fri Nov 03, 2006 11:38 pm

I have to agree 100% with tw2.
CT20B and CT27's are over rated and over priced.
The current going market for CT20b's is $600+
A year ago they were selling for $500
CT27's start at $900 with a core exchange!
Im sorry but for that price I can find t3/t4, or buy TWO freshly rebuilt ct26's

But enough about those turbo's this thread is about CT26's
CT26A from the 7MGTE motor found in the Supra MA70.
The "A" denotes the CT26 from the Supra, its cast directly into the turbine housing.
It is a single entry turbo and capable of 300hp and unlike the ct26 found on the MR2 and AllTrac, boost will not start to fall off at high RPMs and is capable of producing more efficent boost beyond 16psi.
It is also a direct bolt on for the 1G3SGTE, with only the need the clock the center cartrige and impeller housing - the exducer housing bolts to the single entry manifold and turbo elbow of the 1G3SGTE.
Low milage CT26A can be purchased for as little as $100 and rebuilds for $400.
Several turbo rebuilders also offer upgrades of the CT26A the most notiable upgrade being the T4 60-1 capable of 500+hp
This upgrade actually replaces the center cartrige with a Garret unit and if you are resourceful enough can find one for as little as $700 all the while retaining that "factory" appearance.
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Postby smog7 » Sat Nov 04, 2006 12:26 am

:shrug:
-omar
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Postby smog7 » Sat Nov 04, 2006 2:24 am

what about an upgrade like this ...?
http://cgi.ebay.com/ebaymotors/Garrett- ... 2576QQrdZ1
-omar
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Postby allblackalltrac » Sat Nov 04, 2006 2:46 am

:wink:
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Postby toayoztan » Sat Nov 04, 2006 7:34 am

For what you're looking for, I personally don't see you needing a trim size that big.

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