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Registered:
December 2002
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3T-GTEU Turbo and Boost Limits?
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Sat, 28 December 2002 12:43
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Are there any Turbos that will bolt straight in place of the CT20 stock Turbo, and whats the max/safe Boost you can run on a stock 3T-GTEU engine?
What are some other cheap performance increasers?
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Location:
Sydney
Registered:
July 2002
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Re: 3T-GTEU Turbo and Boost Limits?
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Sun, 29 December 2002 11:25
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Theres a guy that I'm trying to convince to come to the next dyno day is running 24psi on the stock turbo. He is however running 8 LARGE injectors.
Other than that, I'm not sure sorry.
CT20 turbos might be easy to find (MIGHT!) so if you run more boost on one then you could grab another one? Just a thought.
Big thing is, if your running more boost will your fuel system hold up?
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: 3T-GTEU Turbo and Boost Limits?
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Sun, 29 December 2002 13:49
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Maybe your question should be: "how much boost have you run and how many pistons have you killed?!"
The standard 3TGTE is limited by it's pistons. In stock form with a standard computer pushing a standard fuel system, 11 - 12 psi would be my absolute limits (more safer running 10 - 10.5psi). I have seen a 3TGTE boosted to 15psi in a standard setup - this only ran that pressure, on cold nights with a cool air charge, so maybe that says something (ie: alot!) for intercooling.
Personally I'd not go past 10psi, unless you like rebuilds, or want to waste money, in a stock application.
There are no bolt up turbo replacements for the CT20, that I'm aware of. Be careful when looking for CT20's too, as some people sell deisel spec turbos which bolt up at a different angle, and also have a smaller compressor snail inlet.
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Location:
Canberra
Registered:
May 2002
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Re: 3T-GTEU Turbo and Boost Limits?
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Mon, 30 December 2002 06:31
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I dont know that there is a 'cheap' swap for the turbo, depending what your definition of cheap is.
The stock turbo would be way past its limit at 24psi, making more heat than useful boost pressure.
Several people have fitted either the supra CT26 turbo, or made an adaptor plate to fit a garrett T25/28/03. Either way, you will have to make new oil feed & return lines, water lines, dump pipe, and possibly intake plumbing.
As for the question about how many pistons have you broken?
Me = 3  two on 14psi, the other on 12psi. The factory pistons are weak, but more than that, the OEM computer does not handle extra boost very well, and the lack of an intercooler is a MAJOR downfall, both contributing to detonation which is what breaks the ring lands.
CHeers
Phil
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Location:
Melbourne
Registered:
May 2002
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Re: 3T-GTEU Turbo and Boost Limits?
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Mon, 30 December 2002 10:06
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Hi
I have a TA63 that doesn't have a turbo. ie missing, and the oil lines to and from the block. Would it be worth while trying to find a CT20 and the required oil lines or just get a CT26 from the start and fab some new lines up. I'm planning on inter-cooling too.
So is 10-11 psi safe for a inter-cooled motor or one without, if so what can i boost to with a decent inter-cooler?
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: 3T-GTEU Turbo and Boost Limits?
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Tue, 07 January 2003 21:00
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With the standard pistons still in the bores, I'd recommend you don't go past 11-12psi even when intercooled. As a general rule you could measure the charge temp of a 3TGTE without an intercooler on standard boost, and base your revised intercooled boost levels on matching that temperature, provided you can supply enough fuel to the motor! Remember, with an air to air intercooler, nothing's going to cool down until you're moving!
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Location:
Wichita, Ks, USA
Registered:
May 2002
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Re: 3T-GTEU Turbo and Boost Limits?
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Tue, 07 January 2003 21:06
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re: c2888
i think you should go ahead and try to find a ct26 or another turbo since the stock one sucks and if you want more power you'll probably replace it anyways. ..the other turbos have better upgrade options for the future anyways.
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Location:
Sydney
Registered:
July 2002
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Re: 3T-GTEU Turbo and Boost Limits?
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Tue, 07 January 2003 22:41
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Come to the dyno day and see the 24psi one.
I recon upgrade intercooler, then look at more fuel, and get it properly tuned, put more boost through the standard turbo then if you still want more look at upgrading turbo.
No point upgrading the turbo if your not going to have the fuel and cooling there to cope with it, otherwise you'll end up like a lot of people that get there turbo high flowed or new internals and wonder why they're not getting more power.
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Location:
Canberra
Registered:
May 2002
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Re: 3T-GTEU Turbo and Boost Limits?
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Wed, 08 January 2003 10:44
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Ivn-ra65c: Have you got yours running yet? How does it go??
Cheers
Phil
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Location:
Victoria
Registered:
September 2002
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Re: 3T-GTEU Turbo and Boost Limits?
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Wed, 08 January 2003 23:10
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You could try red Denso fuel injectors. They were used on Mazda 13B Turbos. (may need a bigger fuel pump too??)
The later model 3T's had water-cooled turbos, but you will want something bigger than a CT20...
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