turbo details and compression for b18c7 question

[destrukshn]

yes i understand, i was just trying to state, that you don't have to run THAT much more boost to make the power from the high comp motor.
so saying that, if you raise the boost more, you will make more power.
becuase lowering the comp will obvisously allow you to run more boost.
but if you want to make good power on lower boost levels, get a bigger turbo, eg. gt3037
with a big rear housing.

[votek]

yeah i know. but my compression is 11.1 on the b18c7

i paid 140kw at 7psi

[IEVAQ8]

yes i understand, i was just trying to state, that you don't have to run THAT much more boost to make the power from the high comp motor.
so saying that, if you raise the boost more, you will make more power.
becuase lowering the comp will obvisously allow you to run more boost.
but if you want to make good power on lower boost levels, get a bigger turbo, eg. gt3037
with a big rear housing.

its the same principal..........u lower the comp to run more boost, which makes the car lagy.......u run lower boost with stock (high comp) and make same power but heaps more responsive...................

yeah i know. but my compression is 11.1 on the b18c7

i paid 140kw at 7psi

ur issue is that the rear housing is way too small..............if u wanna do budget build, u can get ur rear housing machined to say a 1.06 rear housing as i had 0.86 and was still 2 small..........or keep what u got and get a gt3037 with at least 0.82 rear housing with internal gate and u save heaps on getting new manifold and the likes..............

[destrukshn]

you made 140kw on 7psi?
on a t28bb with a 0.64 rear housing?

[VTi_b0i]

LOL the mechanic said mr rear housing was too big LOL and mine is an .82

[votek]

yeah .. is there something wrong? or is it just me

[votek]

no way. looking for a .86 or a 1.06

[destrukshn]

yeah .. is there something wrong? or is it just me

sounds about right-ish.
dyno figures aren't always the most accurate.
but sounds about right, you reach full boost around 2500 rpm with that turbo
lol

go for a larger turbo. or at least a rear housing, for your turbo, i believe garret only make a 0.86 rear housing for it.
that should add another 20kws ish.

[votek]

i just thought it was a bit low lol

would it cost alot of moeny to change the rear exhaust housing

or do you think i should upgrade to the disco potato.. aka gt-rs

i was pretty dissappointed

[votek]

wait.. so mine is a .86 housing... hrmmm interesting.. lol

[destrukshn]

your are only running 7psi of boost.
it does seem a tad low, but you have the most ugliest dump pipe in the world. ( i'm also using the same manifold and dump pipe btw hahaha)
rear housing would set you back around 600 brand new from garret, or you can just get a disco potato, a 2871r, or something similar along the lines of so with a 0.86 rear housing or larger.
changing the turbo helps alot, BUT, also getting rid of the manifold and dump pipe also helps make easier power.
atm, i'm pusing 205kw atw with the avo manifold and dump pipe. hahaha, sure it's restrictive, but it's still making power.

btw what exhaust are you running? 2.5inch?

[destrukshn]

wait.. so mine is a .86 housing... hrmmm interesting.. lol

i dobut your one in s 0.86 rear housing?
who said so?
im pretty sure your one would be a 0.64 housing, the most common rear housing on the t28bb