Garrett GT4088 Vs GTW3476

[Fr3akyR33]

Hey guys, I’m tossing up between two turbos, both have the power range I want however I don’t have much experience of which would spool faster and/or perform better, any help is welcome.

[Lithium]

What is the power range you want, and your setup etc?  It's hard for anyone to tell you which is better suited when you've mentioned two turbos which flow different to each other.  I'm personally not a huge fan of either in the current market, much better options for what both can do out there now.

[Fr3akyR33]

The power range id like, would be around 350kw and at the moment the upgrades are, 750cc injectors, link G4 ecu, front facing plenum, 6 boost manifold and so forth, if there is a better turbo that is more suited for the type of set up I’m after, which would be more street but occasionally track.

Edited October 5, 2017 by Fr3akyR33

[Ben C34]

You really should narrow down your power goal. 

There is a massive difference between 350 and 450 kw.

[Fr3akyR33]

Ahh sorry, my bad, I meant 350kw

[Lithium]

Ah that makes life simpler.  On 98 octane?   I can say straight out, a GT4088R is overkill for that power... though these days a GT4088R is pretty much pointless in every way unless you are pretty much given it.

Edited October 5, 2017 by Lithium

[Fr3akyR33]

Yeah only 98 as that’s what I will give that car, nothing over the top but something that performs good! Ahh makes sense, I’m till a noob at turbos as this is my first turbo car

[R_34]

Which flange you got on the 6 boost manifold ?
T3 single scroll ?

[Fr3akyR33]

I’m looking at a T3 single scroll, will get the mani at the same time as the turbo

[Cowboy1600]

Both those are overkill.

An ATR43SS is the turbo you seek.

http://www.hypergearturbos.com/index.php?route=product/product&path=72_75&product_id=57

 

 

 

 

[Fr3akyR33]

Ahh okay! Next question, what’s the difference between internal and external wastegate and what’s better? Also ball bearings? 

[Cowboy1600]

For simplicity go internal.

External means you'll need a new manifold, dump pipe, wastegate, plumbing so on and so forth.  To go drive in drive out with a new external gated turbo you're probably talking $6k including turbo.  To do it internal you're looking at half that including turbo. (That's JUST to buy the turbo and have it fitted - NOTHING ELSE)

Note, you're going to need a hell of a lot more than just a turbo to hit your power goal.

350kw is going to be a $10k-$15k spend.

Turbo

Cooler

Injectors

ECU

Exhaust

Coilpacks

Clutch

AFM

Filter

Fuel pump

Fitting parts

Tuning

 

I suggest you stop worrying about specifics, ie. which turbo, and spend the next 6 months reading and researching these forums as to what you're getting yourself into.  It's clear you have absolutely no idea so you need to research like a madman.

Start researching for a well regarded workshop near you who you will get to do the actual work and then work with them, as well as what you can learn here, and start buying all the pieces you'll need to complete the jigsaw (after lots of research).  If you rush into it and start hanging all sorts of random shit off your engine, you'll end up spending $25k and you'll get a shit outcome.  Research, patience and knowledge is your friend.

 

[r32-25t]

Seriously for what you want just shove a gtx3071, a good exhaust and intake, a good cooler, a fuel system to feed and an ecu to control it and a clutch to hold it

and if it's a 33 engine save some money for a bottom end cause it'll hurt a rod eventually 

[Fr3akyR33]

Cheers guys, will have a look into it. Sorry on the noob question as turbos aren’t something I know well. But I’ll have a look into a gtx3071

[Lithium]

What kind of dyno will your car be tuned on?  Worthy heads up is that you won't make 350kw @ wheels on a Mainline or Dyno Dynamics rolling road dyno using 98 with a GTX3071R.

[Dose Pipe Sutututu]

Also it's not the rods you worry about, it's the ring lands. They will break and take out your motor with that amount of power with time.

 

[Fr3akyR33]

Should I possibly just go to a lower power level and maybe not 350 straight away? 

[Dose Pipe Sutututu]

If it is purely for street use and not used in a competitive motorsports environment, then 300kW is plenty for a car with basic suspension modifications (i.e. a set of coilovers) and the factory LSD.

270~300kW is very achievable with a small budget and will be "fast" enough and "fun" enough.

Once you start go to beyond that, expenditure increases exponentially where as before that it is linear some what lol.

[Fr3akyR33]

Hahah I reckon it would be! I was thinking obviously the gtw3476 but possibly something that can easily achieve 300kw 

[Dose Pipe Sutututu]

Hypergear ATRG3SAT would easily do that on 98RON and give you a bit of headroom in future if you ever decide to spray some WMI or go E85.

Another question before you start throwing out turbo makes/models etc. is when you want the turbo to come? yes any big turbo can "make" the numbers you want but when is another question?

No point slapping a biggish turbo on your car to make only 300kW and have it come on late - very american mentality. "oh be dayem, it makes 500hp on a mustang dyno, and I dont' mind the lag because I'm american"