superturboprelude

as title says is GT35R T4 .58 a/r bigger than GT35R T3 .63 a/r? did a search everywhere cant really find an answer thanks in advance

ScorpionT

.63 is still larger, the mounting flange is just different. Dont get the on-center housing unless you have space issues under the hood.

KeyserSoze

Like scorp says.......63 a/r is larger. If the number is larger then its larger. ^_-

superturboprelude

so can i hit 600 whp with t4 .58 a/r on how many psi you guys think its a 2.3 liter h22 vtec

EARLdaSQUIRREL

i would go with the .82 housing

ScorpionT

Agreed. The .63 wouldnt be a bad choice either.

I wouldnt use the .58 because its an on center housing, they fit nicely under the hood but arent as efficient as a tang. housing. What manifold do you plan on using?

EARLdaSQUIRREL

i would see no need for the .63, i have the .82 on my 84mm gsr and have full spool by 5000rpm

ScorpionT

I prefer the .82 also, but you can still make big power on a .63 housing.

superturboprelude

what about .58?

ScorpionT

There are 2 reasons I dont recommend it. First is its very small, you should have a .63 or larger. Second reason is that its an on-center housing. They arent very efficient, spool slower, and dont flow very well. Its just not a good combination unless you absolutely need to use the housing.

superturboprelude

then what do i need to switch housing to a bigger one?i have a T4 manifold

PrecisionH23a

How is a .63 t3 larger than a .58 t4? There is much more difference than just the mounting flange... maybe you guys overlooked the fact that this is a t4 and not a t3. This turbo will make 600whp no problem. I tuned a set-up a few weeks ago on this same turbo that was making 520whp @ 20psi (Built H22).

ScorpionT

The T4 flange may be a larger inlet but the internal volume is smaller due to the design. If you have tuned with on center housings you should also know they are not very efficient and only designed for systems with packaging issues.

OP, if you want to run the turbo with a T4 housing, get the Precision equivalent, a 6162.

turbo boost

iTrader: (1)

what do you guys mean by on center housing? the 4 bolt outlet? im curious

ScorpionT

Housing on the left is the on-center. Its a reference to the turbine inlet in relation to the center of the wheel.

turbo boost

iTrader: (1)

o ok i get it now,thanks for the info/pic

EARLdaSQUIRREL

i have the atp t4 .82 housing and i have alot better spool than i thought i would

superturboprelude

the housing i have is the vband one

BLaCKWiDoWSi

I would have to agree with PrecisionH23a. T4 .58 is larger than a T3 .63, and can also make 600hp. My friend who has a 35R has a T4 .58 and made 624whp / 423tq on his bseries. I spoke with Justin of Precision Turbo just the other day about this and he told me the T4 .58 will flow more than the T3 .68. Just because it is on center housing doesn't mean it won't make 600hp.

superturboprelude

just wondering how many psi was that b series pushing? was it on stock head?

TheShodan

iTrader: (14)

No. That's not it. Its based upon a calculation of AREA. Simply because it has a larger number doesn't make it a bigger volute in the housing.

Example. T2 Series .86A/R , vs. .63A/R T3. Which one is bigger???

Answer: Neither, the area under the volute is the same..

dpetro1

that makes more sense. but are they right that the .58 t4 is smaller than the .63 t3 gt35r

BLaCKWiDoWSi

It was on 29 pounds I believe....it was a ported and polished b16 head. ferrea valvetrain