T3t4 T04e Turbo

[Karl_33]

Hi all

Im looking at getting a T3T4 T04E turbo for my R33 Gtst. just wanted to know if anyone one could tell me if its a good turbo to use for my car. Also is it hard to install? it should just fit straight in and replace my stock turbo shouldnt it?

Thanks

Karl

Edited June 11, 2009 by Karl_33

[WYTSKY]

is it an ebay special? does it cost <~$700? if so, don't worry about it..

if its a decent one, I thought the T04e's ... due to size needed larger oil lines/extra requirements....

also... is it internal or external gated? if its external theres a lot of work to get it going... is it high mount or low mount? if its high mount you need a new manifold...

got a link?

not any of these is it ???

http://www.made-in-china.com/showroom/wali...3-T4-TO4E-.html

http://www.made-in-china.com/showroom/perf...Air-Fitler.html

[NISMØ]

its a piece of shit . <<<< FULLSTOP

[SDEWY5]

+1 POS dont bother

[paulr33]

please please please please please please please please please please please please please please please READ THIS

http://www.skylinesaustralia.com/forums/Fa...Pe-t221021.html

[hypergear]

How much power are you chasing for Karl? We can build you some thing or high flow your stock turbo that doesn't blow your bugget and actually works.

[discopotato03]

This question gets asked a lot and the most basic truth is that many "T3/T04E" turbos don't work too well .

The reason is that they are based around a "T3" turbine , which was designed to drive a 60 odd mm OD compressor , trying to drive a 76mm OD T04E compressor wheel . You have a fixed amount of turbine (exhaust gas) energy to work with so giving it a larger and heavier compressor to drive isn't the best way to get response from the turbo .

The fact that the larger wheel can churn more air means that its drive power requirements go up so it means more turbo lag in the real world .

The other drama is that when it finally gets up and happening the extra air from the larger compressor equates to more exhaust gas production and because the turbine wheel is small in relation to the compressor and it becomes an exhaust restriction .

Ideally turbine and compressor size need to increase when you want extra turbocharger capacity .

Now back to the "T3" turbine bit .

Many turbines get called T3 when they could well be T3/TB03/TB31/TA34/T350 etc etc .

Many "high flowed" turbos get TB31 turbines because they are very similar dimensionally (shaft wise) to the old dinosaur T3 turbine . The blade form is very different and it doesn't necessarily like being fitted inside bored out Nissan/Garrett T3 or Hitachi T3 flanged turbine housings .

Garret did make a turbo that some may call a T3/T04E hybrid only they call theirs a TA34-1 from memory , it may have used a TA34 turbine and a small trim T04E compressor - been a long time since I looked at one . I do remember Fred from Turbo logic near Wollongong saying they worked quite well on RB20's .

In my opinion RB20 and RB25 engines were factory tuned around getting boost at reasonably low revs and they feel pretty flat if you fit a turbo with a higher (engine rev wise) boost threshold unions .

I also think new players to the turbo world think they can have more power and torque from a larger than std dryer and have it start at the same point .

These engines have ball bearing turbos from the factory and fitting a larger plain bearing (higher drag loss bearing) turbo is a recipe for more turbo lag .

Really the only thing that's terribly useful in a T3/T04E hybrid is the "T3" mount flange and the integral waste gate . Very convenient for fitting the bastardised turbo but neither guarantees that it will work very well .

My call is that these turbos are build down to a price , budget if you like , rather than up to a performance standard .

Its a shame people don't go looking for performance in other parts of their Skyline first , the first R33 I ever got in had the std turbo , GTR IC and pipe kit , PFC , exhaust , modified head with std cams and match ported std manifolds . Its performance was very good and more than good enough to unstick the rear and light up its 245/45/17's .

If I wanted to Hi Flow an R33 turbo I'd have a Garrett GT2871R cartridge fitted into reprofiled std housings , the complete unit would be shorter than a std turbo and have smaller oil and water unions but you end up with a better center section than any T3 or small series T4 .

Another alternative is the GCG BB Hi Flow though there are mixed opinions on those .

I have very little faith in Hi Flowed "T3/T04e's" , a lot of their trouble is that many totally unworkable combinations can be bolted together because of the common T3/small shaft T4 turbine shaft dimensions .

A .