garrett gt3076r vs greddy t78 33d 17cm

[rwd]

what would be like a t78 1jz:
how much whp will be possible
which rpm for max boost
it will have a lot of lag
is it a old turbo outdated
have it big difference in power and lag with a garrett gt3076r
i wonder if greddy do not have adapted their turbo for japanese high rev engine comparatively to garrett

it for futur project
i already have a 3076 on my 1jz and it very fun cause he have no lag and 440whp ,but the power curve look like the stock twin , i don't have aggressive power gain below 4500rpm ,like the the japanese high rev engine would be have

any body know if change from 3076 to t78 could be different

 

[tissimo]

t78 is worlds apart from the 3076.

The T78 will make 750whp, and come on ~ 5k rpms and It is an older design. Compared to the 3076 it will have a lot of lag.

 

[rwd]

come on ~ 5k rpms ?? is it the full boost

is it streetable . i have seen a 2jz t78 dyno sheet , and at 4500rpm it have 400whp ,that look like my 3076

 

[tissimo]

Yea, full boost will probably be ~ 5k rpms (18 psi). Streetable is a relative term, whats streetable to me maybe not be the same as your tolerance level. Remember also the 2jz has a different displacement then the 1jz, and that aids in spooling the turbo.

 

[Bigzavs]

like tissimo said, T78 is gonna be capable of a lot of power, but on a 1JZ itll be a lag monster.

my 1.5jz is just getting into boost around 4100 on a T88-34D and thats with the extra .5L of displacement

streetability is different between each person, just depends on how you like to drive