T3/4 spool time?

[Crucible]

Ok, Im gonna turbo my GTZ and have sorta decided to use a T3/4.

Ive still got a bit of homework to do but from what Ive read they are a good choice for topend power which is what Im after

I was just wondering if any of you gte boys using this turbo can tell me what sort of RPM ill see full boost at? How laggy are they? Also any pointers on these puppys or any negatives?

It will be on an ActionDan Manifold

cheers heaps in adv

TNT

[Malcolm]

t3/t4? maybe you'd like to be a bit more vague? like perhaps just asking how turbos in general spool?

[vvega]

with a .48hot .50 cold expect it to spool around 3-4 k

v

[Skidman]

Depends on a few variables aye. Hard to say with the given info.
Intake mods? after market comp? Custom Exhaust manifold? Standard cams?
If you get a real after market computer you would get away with minimal lag-and use shite loads of gas.

[vvega]

my example would be if you used a standerd motor and ecu or aftermarkt without antilag

v

[Skidman]

Yea I agree, posibly 4-5k, cause its a resonable size turbo for a 1600cc. Youd probly run out of RPM beore Puff I would imagine. Most of the T3/T4 we see in our shop are upgraded turbos on standard engine 2L 4 cylinder cars.

[vvega]

my data comes from doing it
and knowing many poeple that have also done it


im not a talker im a dooer

v

[Skidman]

[vvega]

click on the 1uzaw11 at the bottom of my post to see my latest project

v

[Skidman]

Holy shit!! might talk to you about that tomorow

[bluemaumau]

my m8s got a T3 on his b16a turbo with pod and 2.25exhaust spools at 2250-2500rpm! full boost(5.8psi) before or just after 3000rpm. and hes got a external.

[evil_si]

mazda ht18 core, and skyline t3 exhaust housing, standard gtz boost from 3300.

t3/t4, .50 comp. .63 exhaust, boost from 4000.

[Dell'Orto]

Not surprising it spools like that with a 2 1/4 exhaust, would be quite the punchy little thing.

[evil_si]

my m8s got a T3 on his b16a turbo with pod and 2.25exhaust spools at 2250-2500rpm! full boost(5.8psi) before or just after 3000rpm. and hes got a external.

from my experience, vtec turbos are completely different to a 4age on boost, with response, lag, power

[Bazda]

I used a 0.5a/r front cover with a 82.5mm comp wheel and a 0.7a/r twin divided exhaust with a 72m wheel.
Ran the standard ecu with 0deg initial timing and full bosot at 4800
If i ran the timing normal full boost was by 4500 but standard ecu made the timing go too high at teh higher rpm.
Seems laggy but did it have some go up high

[Drifter4ag]

my ht18 gets to 15psi at 3600 rpm ... .. 5.1psi is there at like 1500rpm on mine .. and it it was higher comp it would be tehre at like idle

[Crucible]

t3/t4? maybe you'd like to be a bit more vague? like perhaps just asking how turbos in general spool?

Sorry that was vague, what was I thinking? .......Its late Hi comp GZE, using a 4>1 Custom Ex Manifold - Im going to ask Action dan to Fabricate one for me. Apart from the N/A inlet mani the Cams, E.C.U and everything else will be standard for now until i can get dollars together for after market ecu etc.

I know this is a thrashed topic but was just wanting to know overall if a T3 is too laggy or not, I understand alot comes into the Lag factor etc. I was going to go down the TDO4 road but have read that they lack Topend and run out of huff. So now im back to the drawing board on Turbo choice as I want a good topend Combo

When people say they are using a T3/4 are they referring to a unit that shares differant housings as in a hybrid like T3 Exhaust housing with a T4 Compressor housing??? or does T3 and T4 share the same flange so they word it T3/4???

Sorry to sound like a Dunbass but any help would be much appreciated, thanks for the advice so far Guys

TNT

[Ako]

No, the vague bit is the "T3" bit. There's literally hundreds of different sizes!

TD04 on a 1600 4AGE.. I can't imagine it running out of puff. If anything its probably perfect. Put it this way - anything meant as factory fitment on an 1800 engine would be just right for making power on a 1600, anything sized for a 2L (td05 - 14b for example) would work if you can be arsed waiting til 5Krpm ish I guess. My city turbo didnt get any useful boost till 4500rpm, then it hit well enough you'd change lanes accidentally and light up in 3rd. Why people persevere with peaky FWD turbos totally baffles me.

[Silent Knight]

or does T3 and T4 share the same flange so they word it T3/4???

No...T3/4 is the flange.
With that you can have hundreds of different combination of turbos to slap on...

[Malcolm]

you sure? I thought t3/t4 meant t3 turbine side and t4 compressor side, meaning you'd have a t3 exhaust flange