1JZ Stock Boost

[Deeznuts]

I understand 9 psi is about stock for the 1JZ. I am building a DD 1JZ what is safe to boost as a Daily driver on the stock twins for the 1JZ. without having to tune. (i understand the stock 1jz twins arent very deriable)

 

[bobiseverywhere]

I understand 9 psi is about stock for the 1JZ. I am building a DD 1JZ what is safe to boost as a Daily driver on the stock twins for the 1JZ. without having to tune. (i understand the stock 1jz twins arent very deriable)

the Stock twins are actually quite fine. DD just with an exhaust and an intake expect to see about 14 psi. If you want to stockers to last make sure you have the y-pipe replacement that will help, give the turbo proper cool down at the end of your drive (use a turbo timer possibly) and if you want to be extra careful install a oil cooler with a thermostat.

 

[pnutcar]

I dd'd mine at 19psi for over a year w/ no problems. Mine was 3'' turbo back.

 

[Deeznuts]

the reason I ask is i talked to the guy from driftmotion and I have reads that the 1JZ are somewhat sensitive. at 12 psi would I have to do any tuneing ? or can i just put a boost controller on it and call it a day?

 

[Blind Drifter]

On my 1J with 3" downpipe back, intake and front mount, I was making 14 psi with no boost controler. You wont need a tune. I made 315hp with those mods at 14 psi....

 

[wolf31685]

i just started mine up and i'm pushin 10 lbs with 3 inch from the turbo back and a big front mount haven't really got on her yet tho so it might be more

 

[Deeznuts]

I understand the HKS T3G is if not a direct fit very close to it. Does anyone know of any twins turbos that are close to a direct fit for the 1JZ

 

[pnutcar]

I understand the HKS T3G is if not a direct fit very close to it. Does anyone know of any twins turbos that are close to a direct fit for the 1JZ

Check out my sig, plug and play all the way. Cheaper than those turbos, everything you need, look better, perform better, the whole 9 yds.

 

[Bock]

You could always get your self a pair of CT 12B's ( 2J twins )

 

[mischief7m]

i was under the impression that the 12b's had clearance issues with the firewall

 

[Evilempire1.3JZ-GTE]

Ct12bs are crap for our cars they spool an extra 500+ rpms above the 2JZ which haves .5ltrs more push on them. You dont need steel blades to boost more or get more power out.

You have to make sure your EGT stays low the heat kills the ceramic blades. 14psi is a good safe boost but make sure your EGTs/tune is good! Thats the secret you dont need a NEO unless you hook it up and have a terrible AFR & high EGT. You may run a little lean/max duty cycle at peek power levels at 14psi just keep an eye on it.