Was flat out in 5th (24-27psi) at around 6k rpm for a few minutes on and off, heard a funny sort of noise from the engine bay and a puff of black smoke from the exhuast followed by no boost! lol
I could hear the turbine wheel spinning (against the housing) every time I opened the throttle but no boost pressure at all so I'm gussing the shaft has snapped?
Compressor wheel has loads of movement in all directions now too!

Was a Stage 2 T3 (.36/50) and has done about 15K since new over the last 2 years, I ran without a dump valve.

I'm guessing I have just been pushing it too hard (well, running it flat out if I'm honest! lol) and heat has killed it?

UPDATE - Seems the turbine wheel has fallen apart! lol

 

I just bought the same turbo....hope it doesnt break too!

 

sorry to hear mate was you re-mapping or just having some fun im guessing you will be upgrading rather then replacing lol

 

Id say its done pretty well tbh mate as lets be honest it hasnt had an easy 15k miles has it

 

Just having some fun with a few mates! lol
I will be upgrading yes! Hopefully a GT2560R (GT28R) which should be good for 270bhp+
But i need to find Ł1000 first!! lol
Your right it hasnt! lol

 

havnt seen you on here in awile karlos where you been?

 

Out killing his turbo so it seems!!

 

them gt28r are good. but get the gt25 if you aint going to go over 280bhp that will have hardly and lag and make good power.. if over then get the gt28 so later you can put more power

 

Been really busy lately but always poke my head in! lol

The GT2560R is also known as the GT28R, as fitted to Nissan S15's, but yeah should spool up nicely and flow well too!

 

Wasn't you making similar power no my old engine on that turbo? I thought it was a 55trim .48!?

 

Made 231bhp @ 19psi at my last visit to APT, I dare say at 24psi it would of been closer to 240bhp but yeah it's only a .36/50 from Turbo Technics!
I really was pushing it! lol

 

Fair enough! Mine made 252 at 22psi on the 55/.48 ported head and cam too! Thought yours was same

 

No mate always had a little .36/50, with a NMS ported head with Newman cam though yeah.

 

Bet the response is great isn't it, I remember my 55/.36 it was awesome!

 

Yeah it is/was! lol

 

cosworth 4wd turbo would be spot on for budget good power, 60trim and 0.48 housing.
pushed my zvh well.

 

put a gt30 on mate and a new inlet and lets see what it does. i think it would go well

 

Sorry to hear that karlos.

A turbo for 1000 pounds sounds expensive to me - no longer a semi-budget build

I do think the 60 trim / .48 exhaust would be nearly as good as the GT28R.
(If I had the extra $$$ I would probably go with the GT28R as well.)

However, with the boost levels you run I would have a dumpvalve installed.
I know guys in the UK like the sound of turbo flutter, but that is terribly hard on turbos.
The Bosch type plumb back systems are quiet, and greatly extend turbo life, along with better spool between gear changes.

Just my opinion of course.

Keep up the good work!

 

It would mate for sure! But manifolds would double the cost again! lol
It is expensive but thats what they cost in the UK
It would be a shame to fit a DV but if it really is going to make a difference then I will?!
Never read anything definitive on them, some say fine without them others say they are a must for high boost applications

 

bloody hell after all this time of people sayin that u will break your turbo shaft without a dumpvalve its actually happened.

sorry to hear that matey

 

I have been kicking the shit out of it for over a year so I'm not suprised!! lol

 

but thats why we build these engine, there is no point gettin good bhp then drive like a bunch of gays.

Giving it toe is good fun

 

hahaha exactly!!

 

I've never broke mine without dump valve has seen over 30psi spikes too (touches wood )

 

How many miles did you do with it? I think mine was just down to heat, the AVC-R really works it hard to try and hold 24psi at high rpms! lol

 

My old one about 15k or there a bouts

Used to hold 20psi minimum

Had it rebuild when built my nee engine so everything was new!

 

what rpm and psi on the comp map should the 55 trim run at? you may be running it hard

 

Me wilky?

Karlos was running a 50trim?

 

sorry mate 50 trim then ,i always stick the 4x4 comp wheels in the t3 when i mess about with them

 

I was told not to use a 60 trim as 55 is big enough and 60 trim really howl!

 

55 trim on the .36 turbine max, more flow 60 trim and .48 turbine ,
60 trim more power slower turbine speed last longer lol

 

My 55 trim .48 is awesome, and lasts as long as my engine so I don't see the need to go any larger on the comp wheel?

 

your right mate its only 2 mm [there abouts]but you know what a restictor makes to a turbo ,thats why i only stick a 60trim in there if you got to machine a housing why not

its just a bit more bhp [pub talk]

 

I see what your saying, what power are you making on 60trims?

 

I was running it well out of the efficiency islands mate thats for sure, my AVC-R was hitting 88% duty to try and hold 24psi past about 5k rpm! This is of course why it's broken! lol

 

did this turbo have a 360 thrust bearing fitted to it Karlos?

 

Yes mate, was a Turbo Techincs Stage 2 as per their website but without cut back blades.

S152 Ford Escort RS Turbo Stage 2
Power output 160-220 BHP
Boost 10-23 PSI
7° cutback T3 turbine assembly
360° screwed thrust bearing

 

Karlos abit off topic but did the AVC-R used to boost spike or would it hit peak boost and hold? Also how do you have it plumbed in...? Off the comp housing or the inlet manifold?

 

It will do whatever you want as it has a programmable curve (boost vs rpm), but of course I tapered it in nicely to remove any spike as this just causes wheel spin! lol
Plumbed in in place of the Amal valve so comp housing to actuator.

 

After looking at you pictures.

I would be concerened into where the bits of blade are and what damage they have done to crowns and plugs!!!