1jz big twin turbo
11-04-12, 02:26 AM
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1jz big twin turbo
Had anyone done a 1jz with big twins or even medium? I was thinking bout doing it cause it seems like no one does it and its different.
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11-04-12, 08:22 AM
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Would like to see this, one of my next builds I wanna do is a mk3 with upgraded or big twins (1jz)... What are your power goals, how do you plan to use it?....
I may have be mistaken but I thought I saw someone using 2j twins on there 1j before and if that's the case an upgraded version of those I would imagine wuold be best for street use and still be able to hit the 500whp mark.
I may have be mistaken but I thought I saw someone using 2j twins on there 1j before and if that's the case an upgraded version of those I would imagine wuold be best for street use and still be able to hit the 500whp mark.
11-04-12, 08:33 AM
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http://www.supraforums.com/forum/sho...-GT28R-s/page6. Quick search. Scroll down, guy talks about bigger twins on his 1jz
11-04-12, 03:29 PM
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I say it depends on what other modifications you have done. Like fuel pump (s), FPR, injector size, stock fuel rail, size of feed and return lines, cams, standalone, or piggyback. I think it can be done but with the help of other modifications. Just my thoughts.. Keep us posted, cause it really hasn't been done a lot on here that I have seen.
11-04-12, 04:00 PM
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I got a single on my 1jz. Well that is because that what it came with lol. I would really like to get the Tomei arms kit for mine eventually but I still don't think thats a "big" turbo oh well. Go ahead and hang a big one off the side and let us know how it goes. I always strive to be different and if I had the money I would do it. good luck either way
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11-05-12, 02:47 AM
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My goals with the 1jz is around 5 or 6. Than I want to build a 1.5j and go real big. I know a place I forgot the name but they have a twin turbo manifold for the 2jz. I was thinking bout getting that and modding it a little to fit than grab a pair of 3076r turbos and beating on them for awhile. Its just the money prob cause I'm not rich so it sounds awesome but might not happen I don't know.
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11-05-12, 11:28 AM
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Just go single turbo, I run a GT4276 on a stock bottom end TRUE 1jz, my head is fully built though, I run an AEM v1 self tuned as well.. I made 481 hp at 19.25psi on pump gas, Yeah the number seems low cause I street tuned the car, I dyno the car at CHI2K12, when the weather gets better I will run the corn juice & crank boost around the 25psi mark & see if I can make the 700+ I am looking for.. people that have taken a ride on the car always give me the look of.. What turbo you run?? lol.. It spools pretty good... This set up is not for everyone, BTW I run a GETRAG as well.. this is in a MKIII..
11-05-12, 02:37 PM
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Jostar, thats bullcrap, on what you have cause you dont have pictures..lol I am just messing with you.. I actually overbuilt my car with the intercooler piping, turbo, injectors, and so on. Just room to grow.. My fuel pump is what is limited me right now, at least thats what the tuner told me. I wasnt there to see first hand. I have a BW S366, and I love it when it spools. I made 522 at 21 psi on 93 pump gas. It was indeed over 100 degrees in the shop. I would be safe to say prolly 550rwhp now thats its cooler. I only run it around 16psi all the time and 467rwhp, is plenty to move aorund on...
Good luck on your decision, but in the end, I say just go single, less complications, modifications, fitments, tuning, and so on. On the other hand, I say do what your heart tells you to do. If you are leaning toward the twin setup, then go for it, and post several pictures along the way....
Good luck on your decision, but in the end, I say just go single, less complications, modifications, fitments, tuning, and so on. On the other hand, I say do what your heart tells you to do. If you are leaning toward the twin setup, then go for it, and post several pictures along the way....
11-05-12, 04:53 PM
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Jostar, thats bullcrap, on what you have cause you dont have pictures..lol I am just messing with you.. I actually overbuilt my car with the intercooler piping, turbo, injectors, and so on. Just room to grow.. My fuel pump is what is limited me right now, at least thats what the tuner told me. I wasnt there to see first hand. I have a BW S366, and I love it when it spools. I made 522 at 21 psi on 93 pump gas. It was indeed over 100 degrees in the shop. I would be safe to say prolly 550rwhp now thats its cooler. I only run it around 16psi all the time and 467rwhp, is plenty to move aorund on...
Good luck on your decision, but in the end, I say just go single, less complications, modifications, fitments, tuning, and so on. On the other hand, I say do what your heart tells you to do. If you are leaning toward the twin setup, then go for it, and post several pictures along the way....
Good luck on your decision, but in the end, I say just go single, less complications, modifications, fitments, tuning, and so on. On the other hand, I say do what your heart tells you to do. If you are leaning toward the twin setup, then go for it, and post several pictures along the way....
11-05-12, 07:45 PM
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getting ready to pull my twins off. i will be posting pics once i have time to start on it.. i just need to buy my oil lines..
11-08-12, 01:27 PM
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I'm curious about this myself regarding upgraded C12A's on a 1JZ twin setup. I've read about upgraded USDM twin CT12B's that Stu Hagen designed (info on SF) and those are supposed to go reliably to 600-650hp. Internally the upgrade for those uses HKS turbines, I think. I'd really like to see if the 1JZ twins can be upgraded to better flowing steel blades.
The guys at BNR Supercars in AL apparently rebuild CT12/20/26 turbos.
That's all I've found so far.
The guys at BNR Supercars in AL apparently rebuild CT12/20/26 turbos.
That's all I've found so far.
Last edited by KahnBB6; 11-08-12 at 01:35 PM.