LD9Stunner

Hello HTers,

Last season I cracked a sleeve on the dyno with my piston/rod gsr. Mind you this motor was built in 2010, bought used by myself and had a decent amount of mileage, dyno passes, track passes, etc on it prior to me getting it. Setup consists of 9:1 CP slugs, eagle rods, stock head, bullseye T3/T04E 57 trim .63 compressor housing .55 a/r exhaust housing, tial 38, inlinepro a/c compatible log/cast mani, 3" straight through exhaust, blox intake, rc 750's. In case you thought you were in a time machine, yes- the turbo kit has circa 2009 written all over it. This setup made 340whp @18psi for a year and then returned back to the dyno with fresh rings, rebuilt turbo, and made 373whp @21psi on 93 octane pump gas. Unfortunately she popped a sleeve on the next pull.

Bought a used jdm gsr block that is currently out for CSS treatment. I also plan to reuse my same internals since they are still in good shape. And as I said, the turbo has also been freshly rebuilt by bullseye mid-last season as it had some shaft play/compressor oil.

The car is used primarily as a street car with routine trips to the 1320. I'm thinking about upgrading the turbo but don't know if its worth it considering I just spent $400 to basically turn this turbo back to new. I know there are much better turbos out there..after all it is 2016, but wanted to get some imput from my HT gurus before I pulled the trigger. I would also be upgrading the manifold if I did so, most likely to a mini-ram. Might ditch a/c also if I go this route.

Goals for the car are 400whp which I know are more than attainable, but also know there won't be much room to grow after that. Do you guys think 20+psi is a lot to ask from that turbo to meet my goals? Would you keep it or change the setup and upgrade? Thanks in advance for any input

Dark_Teg

57 trim will work but something along the lines of a GT3076R could break 400 with ease and is dual ball bearing which is a plus. Since you have already invested 400 bux in the 57 trim you might just want to stick with it unless you can sell it for for what you have in it.

Geis

I think you may have cracked the sleeve because that's a lot of boost on that turbo with pump gas. If you can, with e85 or meth injection your goals are easily attainable.

If you like the spool if this turbo, I say stick with it. Hell, maybe with a new manifold and some cams perhaps you probably could hit 400 on pump

turbohatch96y7

iTrader: (15)

What cracks sleeves?

LD9Stunner

Pretty sure he's insinuating the heat/iat's are to blame..which is sorta the basis of my question.

king06

iTrader: (1)

That turbo will flow enough for at least 450 whp no? I would just keep it. I remember paying to get my t3t4 rebuilt And it was only like $140.

LD9Stunner

Ehh 450 is pushing it and is probably about the absolute max from what i've seen.

Geis

Well it only flows around 48 lbs/min, so if you absolutely maxed it out you should only be around 408-432 whp.

Usually I don't see any of the t3/t4s get that high though, because they become pretty inefficient from what I've heard/seen in the outter islands on the map, and start getting choked on the turbine side IIRC

Furthermore, it's frustrating because there's another thread with a guy claiming his friend ran 470whp on a 57 trim on 91 octane, with a 300hp intercooler to boot. I see ridiculous claims like this from time to time but nobody else seems to really think twice about it, and I have heard of/seen turbos somehow flow a bit higher than what the maps show so I dunno.

Psi, of course

blackeg

perhaps with larger cams, even just itr's you can make similar power but have less boost. do you have any datalogs of the pull the motor let go in? did you pinpoint the cause so it can be remedied so it doesnt happen again

Geis

Yeah b series sleeves have handled as much as 500whp completely stock...Something must have gone pretty wrong for it to crack at only 370

DC4KiD

iTrader: (4)

LD9Stunner,
With the money already invested in the current turbo, I'd just stick with it. Good turbo for the street at about 350-375whp, and can be pushed well into the 400's with about 22-25 psi on higher octane fuel. If you're looking for more than 400whp on pump fuel, then it would be time to upgrade.


I was posting in that thread as well. It's really hard to believe that a T3/T04E 57 trim turbo can put out 470whp on 17 psi and 91 octane. 470whp is well beyond what that turbo should make, but then again, I could be wrong - that, or his buddy has no idea what turbo he actually has. Those numbers match up to what a T3/60-1 turbo would produce.

turbohatch96y7

iTrader: (15)

are you serious?

Geis

Dead

LightningTeg

I wouldnt go for much more on that turbo, especially on 93.

motoxxxman

Isn't that the wrong compressor map? the map says t04e 50 trim, not 57 trim

turbohatch96y7

iTrader: (15)

A turbos psi cracks cylinders? stop dancing around the question

Dark_Teg

If your tune is good and you simply overpower the sleeve then cylinder pressure at max torque is what cracks sleeves. If detonating its obviously excessive cylinder pressure caused by detonation.

turbohatch96y7

iTrader: (15)

I wanted him to answer that

Oh well

Geis

It's pretty funny how you didn't understand that from my original statement when I pointed out that running that high of horsepower on that turbo without knock resistant fuel was probably the culprit seeing how LS sleeves can take much more than 370whp

You actually made yourself look bad just now by not being able to comprehend that or the joke I made about psi with a winky face. And while we're at it, that high of boost pressure on that turbo without knock resistant fuel IS what would cause the knock, so my little joke could actually be taken partially serious and STILL be correct>


My bad on the wrong compressor map guys, but you get what I mean

TravisBiggie

I see where this is going

*grabs popcorn*

turbohatch96y7

iTrader: (15)

Really?


I think you have knock, detonation and pre ignition confused there buddy

Geis

I think you're so confused you don't know what you're saying

The turbo's high IATs at the PSI level he was running it along with spark advance in order to produce the MBT required for that power level on pump gas caused hellishly high pressure in the cylinders...Pv=nrt = temperatures rise rapidly, leading to pre ignition, which leads to knock, which leads to detonation, which leads to cracked sleeves because you are not using knock resistant fuel especially on such an old turbo at a very high psi. Guess what? If the psi was halved, the pressure and temperature for those conditions wouldn't have occurred, so either way I'm right


Good job on getting banned while you're at it, now I won't have to respond to some lame *** retort

NotARaCist

iTrader: (1)

Patchy got himself banned again? It's almost impressive at this point.

AZ_CIVIC

iTrader: (1)

I've done 480whp on a 57 trim with E85 at about 18psi. I actually liked my Garrett Journal 57, thing was fun. Plus they were like 600 brand new.

Geis

Where???