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Old 01-03-2006, 07:09 AM   #1
dcrusupra
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Default 1jz turbos

Whats the max boost the 1jzs turbos (ct12a's i believe) can handle? I found a nice one that im looking into buying. I'm lookin to hit the 400 mark with the 1jz. Hopefully
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Old 01-03-2006, 09:21 AM   #2
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i believe they can handle horsepower... what they can't handle is lots of boost
probly 14psi before you start grenading the ceramic blades?

anyone else got any input?
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Old 01-03-2006, 10:38 AM   #3
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Yep ur living on borrowed time running the ct12a's on the 1jz anywhere over about a bar of boost
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Old 01-03-2006, 09:45 PM   #4
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we've been running the ct-12a's on my 1jz for over 5 years on 17 psi and still going strong. so far car has got 243rwkw and still need new intercooler, and a better stand alone ecu. worst problem we've had is blowing off the BOV.
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Old 01-03-2006, 09:52 PM   #5
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Yea i heard there was a problem with the BOV, he said something about buying a block-off plate but i dont remember exactly what he said. So the car i'm looking at that has it doesnt have a BOV.
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Old 01-04-2006, 07:06 AM   #6
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if you're running a turbo'd car, don't run it without a BOV. will damage your turbo's from compressor surge on throttle body close.the problem of blowing off the BOV that we had was not a problem with the BOV or turbo's, but more the piping that we had custom made to have a BOV in the new setup, as the old position for the BOV was no longer there. was just the hose clamps didn't hold it well enough, and worked loose.
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Old 01-04-2006, 07:37 AM   #7
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Well is there a problem with the BOVs that require a block-off plate. Because now I'm confused as to what I heard. lol. Damn memory.
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Old 01-04-2006, 09:14 AM   #8
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i believe the stock 1jz bov's are horrendous for leaking hence why you need a block off plate and install a new bov
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Old 01-05-2006, 08:05 AM   #9
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mine is just starting to release funny after 10 odd years that we've been giving the car a hard time, of which 5 was at 17psi, so thats hardly horrendous. to get an aftermarket BOV yes you would need a block off plate, so that you could mount the aftermarket BOV elsewhere in the piping.
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Old 01-05-2006, 08:51 AM   #10
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^ that's good for your "one" 1jz
you do realise there's more than one in the world right
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