Gatesys SW20
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ct12b turbo
hi guys came across a ct12B turbo
stamped on the side is gcg xtr something or other was pullled off a gen 3,
now from some of the research i have done its off a jdm supra
will this be fine to run on a gen 2 mr2?
swap it out to replace the ct26?
also what kind oif horsepower can it handle and boost levels?
CHEERS!
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MRTurbo
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Re: ct12b turbo
2013/04/04 16:41:11
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never heard of it...and besides a supra would be single entry though  got a pic?
1990 SW20 GT 3S-GTE Targa 2001 Honda CBR600F4i 
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Mrskylighter
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Re: ct12b turbo
2013/04/04 17:08:47
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They are small. The Supra 2JZ has two of them I think? Definitely not an upgrade and probably wouldn't even bolt on.
Just get a 20b.
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just_ace
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Re: ct12b turbo
2013/04/04 17:38:26
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Pics? Someone had it running on a gen3 3sgte? Im skeptical......
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Gatesys SW20
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Re: ct12b turbo
2013/04/04 18:53:41
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Yeah apparently it was pulled off of one an he thought it was a 20b I have some ony photobucket Here the link won't let me post pics using an iPhone and my Internet hasn't been connected at my place yet http://m1272.photobucket....a2f2.jpg.html?newest=1But also read it could be out of a hilux?
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just_ace
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Re: ct12b turbo
2013/04/04 19:18:44
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That may just be a gcg pn for a hiflow spec they do or something.
Need pics of the exh and comp housings.
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just_ace
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Re: ct12b turbo
2013/04/04 19:18:50
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That may just be a gcg pn for a hiflow spec they do or something.
Need pics of the exh and comp housings.
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Gatesys SW20
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Re: ct12b turbo
2013/04/04 20:04:22
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http://m1272.photobucket.com/albumview/albums/ethanjay/5D6B03BB-0F67-4C25-A488-2FE3D1C0A922-717-000000FA0B324CF4_zps7d9f4804.jpg.html
Try that one
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just_ace
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Re: ct12b turbo
2013/04/04 21:04:37
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Mrskylighter
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Re: ct12b turbo
2013/04/04 21:05:09
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Do you have a pic of the comp housing?
Almost looks a bit like a ct26 from those photos. Can't get them full screen on my laptop.
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Mrskylighter
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Re: ct12b turbo
2013/04/04 21:16:27
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Comparing it to the pictures I took of mine CT20b today it looks very similar. What does it say on the comp cover? Toyota or CT26?
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just_ace
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Re: ct12b turbo
2013/04/04 21:16:48
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It has the extra stud near the turbine on the exh housin.
Obv been rebuilt, prob hiflowed with a steel turbine.
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Gatesys SW20
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Re: ct12b turbo
2013/04/05 06:56:32
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http://m1272.photobucket.com/albumview/albums/ethanjay/BFEBFD99-F72C-4755-B2E2-0050FCA8B1F2-717-000000FA1F33E11A_zps330f2ab5.jpg.html?o=0
Those are the only pics I have of it
Probably a rebuilt ct26?
Worth buying? Says has no shaft play etc
Was being driven on 14.6 psi.
If its a 20b I'd be keen a hi flowed 26 tho are those as good as a 20b?
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Senor_2
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Re: ct12b turbo
2013/04/05 07:30:49
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Did the person you're looking to buy it from have it rebuilt themselves? If so get all the details you can, as others have said above it looks to be a rebuilt CT26/"20b". If the seller doesn't have any info on it (came with the car etc) see what else has been done to the engine and if they have a dyno chart so you can see what it performs like, to give you an idea if it's a standard rebuild or a hiflow.
Another option would be to phone GCG with the info stamped on the turbo and see if they can give you more info on what was done to it (and when).
If it's been hiflowed it will likely have upgraded internals making it a little more laggy than a stock turbo in most cases, but able to produce and hold more boost at higher revs; the last pic you posted looks similar to the steel wheeled ST205 CT20b wheel.
CT20b's aren't amazing turbos by today's standards, plus they are all going to be at the very least 13 years old so don't expect crazy drastic improvements over a CT26 or finding one without shaft play that hasn't been rebuilt, but in saying that they are better than a CT26, just some food for thought.
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Gatesys SW20
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Re: ct12b turbo
2013/04/05 12:03:19
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Fair enough,
Just want to out something on there that will bolt on and hold boost right up to 6800 and hold about 350hp
Unless someone can suggest anything else I could use I think a 20b or equiv hi flowed 26 would be fine for my application
I was leaning towards an ats ct27 but bit expensive for what it is
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