T3/T4 Turbos

[IH8TEC]

Garrett themselves even have the odd turbo they have released which are not too flash in terms of reliability and performance (GT2540R is argueably an example of that, putting a GT40 comp wheel on a shaft expecting to carry the load of a T2x series wheel).

Turbo shopping is a potential nightmare, hence the fact I personally lean towards following the "You get what you pay for" philosophy. If I was on a tighter budget, I would have got a Holset turbo myself.

I had a GT28 die on me after very few k's and a pretty easy life, not entirely sure if it was due to a setup problem or if it was just a "dud" turbo. I used the you get what you pay for philosophy as well as I didn't have much experience with turbo's at the time.

Now that I've found out the rebuild price (replace core and wheels) I came to the conclusion that I might as well use an un-branded copy which has been proven and it won't be such a blow to the bank account if it fails.

I've ordered a t3/4 through Bazda so will need to get a new manifold and dump pipe made, which is actually cheaper all up than the replacement garrett core!

PS is anybody after a gt28 comp housing, exhaust housing with welded up internal? Wheels may be salvagable too, will see when I get it back.

just had a thought, when whomever welded up the internal gate. was the housing seperated from the core? cause that could have possibly stuffed the bearings if they didn't.

[Lith]

Garrett themselves even have the odd turbo they have released which are not too flash in terms of reliability and performance (GT2540R is argueably an example of that, putting a GT40 comp wheel on a shaft expecting to carry the load of a T2x series wheel).

I had a GT28 die on me after very few k's and a pretty easy life, not entirely sure if it was due to a setup problem or if it was just a "dud" turbo. I used the you get what you pay for philosophy as well as I didn't have much experience with turbo's at the time.

What "GT28" is it? A Garrett one? Was it one of the huge .70a/r TO4S comp cover things or one of the smaller ones - more like a SR20DET turbo or something? Stupid inconsistant naming conventions used on Garretts make it hard to tell which you mean - some people call GT2876Rs (aka GT2540Rs, which I was ranting about above) GT28s or GT25s as well.

Bazda - cheers for the info on those turbos... sounds very interesting. Worth keeping in mind. Would they have to be "acquired" through you? Or where do you get them?

[~SlideWays~]

IH8TEC: I would hope they did...thats how I bought it. It all looked mint when I got it and no play at all etc etc. It worked very well while it was going lol

Lith: its a .63 cover so I'd suspect the same size as the S15 one's but it is a genuine Garrett which from what I understand actually has a different BB core.

If anyone is interested I've also got a T25g (which isn't what the gtir's had btw) its a t25 with bigger comp housing .80 and possibly comp wheel? But this needs new seals...i'd imagine it'd choke an rb25det though

EDIT: I think they are referred to as a GT28RS.

[Lith]

Lith: its a .63 cover so I'd suspect the same size as the S15 one's but it is a genuine Garrett which from what I understand actually has a different BB core.

If anyone is interested I've also got a T25g (which isn't what the gtir's had btw) its a t25 with bigger comp housing .80 and possibly comp wheel? But this needs new seals...i'd imagine it'd choke an rb25det though

EDIT: I think they are referred to as a GT28RS.

Ahh the GT28RS, yep - know the ones. Interesting for one of those to die! Haha I don't need a turbo myself, the little chap in my avatar is FINE for my needs

Which reminds me, I have a dirty Nissan T3 flanged plain bearing turbo which was what I was running on the Skyline (~200rwkw) which I would like to get rid of to help fund my new fuel system. Offers (its not broken, it just won't flow 300rwkw worth of air).

[~SlideWays~]

Lith: its a .63 cover so I'd suspect the same size as the S15 one's but it is a genuine Garrett which from what I understand actually has a different BB core.

If anyone is interested I've also got a T25g (which isn't what the gtir's had btw) its a t25 with bigger comp housing .80 and possibly comp wheel? But this needs new seals...i'd imagine it'd choke an rb25det though

EDIT: I think they are referred to as a GT28RS.

Ahh the GT28RS, yep - know the ones. Interesting for one of those to die! Haha I don't need a turbo myself, the little chap in my avatar is FINE for my needs

Which reminds me, I have a dirty Nissan T3 flanged plain bearing turbo which was what I was running on the Skyline (~200rwkw) which I would like to get rid of to help fund my new fuel system. Offers (its not broken, it just won't flow 300rwkw worth of air).

Yeah I was surprised it died too, could have been many things. But yeah going to the t3/4 platform to give me some freedom of choice etc.

[Crucible]

out of the blue , has anyone run either t3/t4 or tdo5 with antliag?
any idea how long they would last?

Antilag, launch control and flatshifting, are these basically all the same thing ie - inducing missfire, is that correct?

How hard are these on a Turbo??

Im looking at buying the new g3 link with these features at the moment

[Dell'Orto]

out of the blue , has anyone run either t3/t4 or tdo5 with antliag?
any idea how long they would last?

Antilag, launch control and flatshifting, are these basically all the same thing ie - inducing missfire, is that correct?

How hard are these on a Turbo??

Im looking at buying the new g3 link with these features at the moment

Kind of, launch control and flatshifting basically momentarily drop the rev limiter. Antilag is the one that makes the misfire
Antilag isnt too good for turbos, particularly caramic ones

[Crucible]

Kind of, launch control and flatshifting basically momentarily drop the rev limiter. Antilag is the one that makes the misfire
Antilag isnt too good for turbos, particularly caramic ones

Ok that makes sense about the antilag because missfire would mean rich mixture, does flatshift and launch controller momentarily cut injector pulse then I wonder?, if it aint spark it only be fuel right???

[Dell'Orto]

Im not too sure actually, I'd assume it cuts ignition.

[Lith]

I'm not 100% sure, but I *THINK* launch control (ie, a typical rev limiter) works by fuel cut.

Antilag typically works by ultimately inducing a misfire condition, so there is plenty of unburnt fuel and general exhaust temp going through the turbine. Very bad for turbos....

[Caveman]

last launch controller I saw cut ignition and caused miss fire at the rpm you wanted.

its was pretty lol have flames out the back of simons car

note launch controllers kill drivetrains

[IH8TEC]

mine is hooked up to the ignition, so it cuts the ignition and backfires and spits flames (note: cops don't like it even if you are showing mates at night in a parking lot ) at that was only at 3000rpm with 2psi boost.

we had it hooked up to the injector resistor i think last time, and thats the only reason we THINK my car may have run lean,

so with mine between gear changes it will also backfire and put flames out the back momentarily.

if you buy that link, you dont have to run those features all the time. i turn my launch controller off otherwise it's just a pain in the ass driving along sometimes moderately, but it will hit that rpm you set and jsut start backfiring lol, can be embarressing.

[flygt4]

out of the blue , has anyone run either t3/t4 or tdo5 with antliag?
any idea how long they would last?

Antilag, launch control and flatshifting, are these basically all the same thing ie - inducing missfire, is that correct?

How hard are these on a Turbo??

Im looking at buying the new g3 link with these features at the moment

thats why im asking. im considering upgrading ecu's at some stage , mostly for the benefit of being able to have an antilag setup, and launch control and flatshifting would be interesting too. also wouldnt mind a cold start function too.
of course id probly swap to a wrx tdo5 as well , as i dont think the vf series will take kindly to antilag
im just looking into it at the moment tho, seems an interesting possibility if you're happy to handle to bad points about it.

do link even have an ecu that carries all those functions?

[Crucible]

do link even have an ecu that carries all those functions?

yes, the new g3s do, this is the one Im very keen on, they mention it towards the bottom of the text. very well priced too

http://www.trademe.co.nz/Trade-Me-Motor ... 199321.htm

[loose_unit]

Which reminds me, I have a dirty Nissan T3 flanged plain bearing turbo which was what I was running on the Skyline (~200rwkw) which I would like to get rid of to help fund my new fuel system. Offers (its not broken, it just won't flow 300rwkw worth of air).

Is that the rb25 Nylon jobbie turbo? Be interesting to see how one of those would go on the 4e.

[matt dunn]

I'm not 100% sure, but I *THINK* launch control (ie, a typical rev limiter) works by fuel cut.

Antilag typically works by ultimately inducing a misfire condition, so there is plenty of unburnt fuel and general exhaust temp going through the turbine. Very bad for turbos....

Antilag does not create a missfire.

It controls idle speed by retarding the timing,

usually to the point that the fuel air mixture is ignited in the exhaust manifold rather tham in the combustion chamber,

and so is very hard on manifolds turbo and exh valves.

Matt

[Lith]

Which reminds me, I have a dirty Nissan T3 flanged plain bearing turbo which was what I was running on the Skyline (~200rwkw) which I would like to get rid of to help fund my new fuel system. Offers (its not broken, it just won't flow 300rwkw worth of air).

Is that the rb25 Nylon jobbie turbo? Be interesting to see how one of those would go on the 4e.

Alas no - I blew that up ages ago. They don't like getting the rpm up
This one is off a VG30DET, which I used to get the car on the road until I could afford something more substantial

[Lith]

Antilag does not create a missfire.

It controls idle speed by retarding the timing,

usually to the point that the fuel air mixture is ignited in the exhaust manifold rather tham in the combustion chamber,

My bad - I always interpreted fuel air mixture making it to the exhaust manifold without already being combusted as being a misfire

[loose_unit]

Alas no - I blew that up ages ago. They don't like getting the rpm up
This one is off a VG30DET, which I used to get the car on the road until I could afford something more substantial

Ahh yep theyve got the .64 exhaust on them dont they? Ive got a front cover and compressor wheel off one of them here at home ready to chuck on my T3.

[Lith]

Ahh yep theyve got the .64 exhaust on them dont they? Ive got a front cover and compressor wheel off one of them here at home ready to chuck on my T3.

Yeah .63a/r exh. The VG30ETs have a .82a/r I think - I had one of those at one point.