Dead Turbo? Vid Inside

[Simon-S14]

kando t67-25g time

Id probably go the td06sh L2 25g

[jet_r31]

as is discussed, the cartridges are average..its happens often, i had one fixed last year , they don't like being pushed hard..

Pretty sure there lots of people on this forum that have cooked them. GTX is probally worse with the bigger comp wheel..

there cartridge upgrades out there for them from memory to fix the problem

cheers

darren

Edited February 25, 2014 by jet_r31

[Lithium]

Suddenly it occurs to me that while I was over in Oz I remember being surprised to find that there was a bit of a trend over there to not run blow off valves - don't be offended by me asking, I'm not assuming anything... but because of how much I heard that I can't help but ask, what kind of blow off valve setup are you running?

[GTScotT]

Id probably go the td06sh L2 25g

Getting a little confused there.

A T67 is a TD06SL2 25G

A TD06SH is a different turbine, despite being a 67mm OD it is not a T67 turbine.

You have also quoted TD06SH L2... Which doesn't exist. the L2 is a smaller variant of the original 65mm TD06S. It is a 61mm wheel in a mid 70s trim.

Kando thread is your friend, has all the model no details. PM me if you seek clarity on any of the above.

[Simon-S14]

Suddenly it occurs to me that while I was over in Oz I remember being surprised to find that there was a bit of a trend over there to not run blow off valves - don't be offended by me asking, I'm not assuming anything... but because of how much I heard that I can't help but ask, what kind of blow off valve setup are you running?

none, BOV's and drift dont really work too well due to the constant on and off throttle applications and feathering of the throttle, the bov ends up just leaking the boost out when you need it the most.

[Simon-S14]

yes sorry thats what i meant a TD06SL2 25g, which as you said pretty much is a t67, although there was some differences wasnt there?

Getting a little confused there.

A T67 is a TD06SL2 25G

A TD06SH is a different turbine, despite being a 67mm OD it is not a T67 turbine.

You have also quoted TD06SH L2... Which doesn't exist. the L2 is a smaller variant of the original 65mm TD06S. It is a 61mm wheel in a mid 70s trim.

Kando thread is your friend, has all the model no details. PM me if you seek clarity on any of the above.

[Lithium]

none, BOV's and drift dont really work too well due to the constant on and off throttle applications and feathering of the throttle, the bov ends up just leaking the boost out when you need it the most.

Someone is setting something or tuning something very wrong if that is what is happening - the BOV should be leaking air, yes.... but if it's not set too soft it should be enough to keep compressor speed up to help it keep on steam, and also save it from surge (aka one of the best ways to damage a turbo).

It might not be the cause, but if you are choosing to do that - don't be too surprised if you keep getting failures.

[GTScotT]

yes sorry thats what i meant a TD06SL2 25g, which as you said pretty much is a t67, although there was some differences wasnt there?

Neg. The GReddy item is exactly that, no difference.

[MrStabby]

none, BOV's and drift dont really work too well due to the constant on and off throttle applications and feathering of the throttle, the bov ends up just leaking the boost out when you need it the most.

Someone is setting something or tuning something very wrong if that is what is happening - the BOV should be leaking air, yes.... but if it's not set too soft it should be enough to keep compressor speed up to help it keep on steam, and also save it from surge (aka one of the best ways to damage a turbo).

The idea behind a BOV is to stop the build up of pressure between a recently closed throttle and spinning compressor, since that pressure would cause the compressor to slow down, and cause lag when the throttle is reopened. So Simon is seeing the opposite of what its supposed to achieve.

+1 to Lith on bad setup and lower turbo life without BOV

[Ben C34]

Whilst I am 100% sure simon and his tuner understand the function of a bov, it is interesting to note he doesnt use one and perhaps could have contributed.

The only way to know for sure is another garret, and use a bov to compare results.

However if I was simon, after so many failures, I would be looking at a change of manufacturers.

[boostn0199]

Most ppl out there on the track dont run bovs these days espcially in the drift scene i doubt thats the problm as everyone else isnt having a problem with it.

[Lithium]

Most ppl out there on the track dont run bovs these days espcially in the drift scene i doubt thats the problm as everyone else isnt having a problem with it.

It actually is an Australian thing, then! I am around track racing plenty here, and everyone but a few goobers (not calling you guys goobers, its just that the people I have met who haven't just happen to be best described that way) don't run them. The top time attack cars in the world and top drift cars in the world run BOVs, I'm going to go out on a limb here and say it's not just for show.

Anyway, do what you like - but I think you should forfeit any right to complain about turbos failing if you do one of the cruelest things you could do to a turbo short of running them without oil...

[methz]

it wouldn't hurt trying a decent 50mm bov setup with a 1bar spring, its what I run and works good

[boostn0199]

I am around track racing plenty here, and everyone but a few goobers (not calling you guys goobers, its just that the people I have met who haven't just happen to be best described that way) don't run them. The top time attack cars in the world and top drift cars in the world run BOVs, I'm going to go out on a limb here and say it's not just for show.

Anyway, do what you like - but I think you shouldn't complain about turbos failing if you do one of the cruelest things you could do to a turbo short of running them without oil.

I wasnt referring to other places around the world as I havent experienced it, I was refering to Australia as thats what I have seen and from what Ive seen many people do not have the issues not running them including myself, but anyway lets not make this into another one of the bov kill /dont kill threads lol.

[Lithium]

Hahahaha all good, imho there is no further discussion to be had.

Fwiw I'm one of those conservative fuddy duddies who while they know that plenty of people have survived being hit by lightning, being shot, getting run over, setting themselves on fire and all sorts of interesting things - none of those things seem really like good ideas, and I guess I apply that way of thinking to my possessions too. Much the same as if someone playing Russian roulette drops dead I tend to assume that while there is no guarantee, there is a good chance they died of a bullet wound - as opposed to suddenly got terminal cancer and died. Taking risks increase the likelyhood of something bad happening, whether people on a forum agree with you or not.

Each to their own though Good luck!

[iruvyouskyrine]

Someone is setting something or tuning something very wrong if that is what is happening - the BOV should be leaking air, yes.... but if it's not set too soft it should be enough to keep compressor speed up to help it keep on steam, and also save it from surge (aka one of the best ways to damage a turbo).

It might not be the cause, but if you are choosing to do that - don't be too surprised if you keep getting failures.

There is a difference between compressor surge shortening the life of a turbo and a brand new genuine Garett GTX3076 lasting a month.

I would look elsewhere for your problems, while i acknowledge that compressor surge is seen as a bad thing, i am 99.99% confident i wont kill a brand new turbo in that time.

[Chris32]

Any updates on the cause of failure Simon?

[scotty nm35]

A thin shaft spinning at 150,000 revs at high temp, with force applied to both ends, as surge kicks in the shaft would have to contend with massive vibration. It's common sense you would try and minimise it for the turbo's sake. BOV's leaking is a lame reason imo, there are plenty of aftermarket bov's that have provision for heavy springs and seal perfectly, although I understand feathering the throttle would work a bov fairly hard, you may want to try an adjustable one and fine tune it to your preference.

If a turbo fails within a very short time, good chance the oil supply was an issue. I have seen it many times, and Garrett would know this all too well. It's why they refuse to warrant their product in most cases.

Does smashing limiter have any affect on turbo life

Soft limits can kill a turbo quickly, especially if you are hitting it regularly. Not much you can do about this, other than raise the limiter I guess. Perhaps speaking to the tuner about it can't hurt? Mine hits 45psi on the soft limiter going down the straight, as sometimes the auto doesn't shift in time. The 45mm wastegate just can't keep up.

My GTX has taken plenty of abuse over the last few years, as did the last one I sold. 30psi+ daily, hundreds of dyno runs and quite a few track days. You can't blame Garrett cores, they are well built, designed and heavily tested, which is more than I can say for Kandos or most other brands for that matter. It's just easier to blame the turbo I guess, than find a tricky issue that arises at full throttle. Race teams can spend massive amounts sorting these kinds of problems to make their cars reliable. Hopefully you sort it out anyway Simon.