reisskahn

Had my cossy remapped at NMS about 6 months ago only done like 2000 miles tops since then. Just prior to the map i fitted a t34.48 which supposedly done 1000miles had 360 bearing but was in storage for 4 years. Anyways while trying to fix a fricken miss-fire problem last week which i ended up changing the plugs Karl fitted (Denso IK27) to the 701's i decided to go for for a little blast.

Missfire was slighly cured but not fully and upon the test drive i knocked it back from 3rd to 2nd (as i was cruising at the time) and heard a loud whistle screaming type of noise which i knew soming was fooked.

Now theres all white smoke and a nasty rattle from the turbo. Upon removing the filter hose the shaft looks intact with no movement in it but hesitates to spin on idle and when reving the engine.

What i dont understand is whats happend to it and why??? i thought the turbo should have able to handle this kinda boost (was peaking 30psi, dropping to 26 and then holding 20 at top end)

I dont really want to replace it without knowing what the cause was.

Also who would you recommend if i want to get mine rebuilt?

Here a video if u can make some sense out of it?

http://s50.photobucket.com/albums/f3...t=SSL21983.flv

Lee_R21Turbo

iTrader: (1)

The blades look like summat has gone through it to be honest mate!!

But that kind of movement definately isnt right. It might of lost a blade off the rear wheel. Take the downpipe off the back of it & have a peek.

15D

Bamber wrecked a 500 mile old T34 with exactly the same effect.
Deffo a case of the turbo has injested a nut, washer, clip or some debris

reisskahn

Lee_R21Turbo: I reckon something defo has gone from the rear of the turbo as i could here it rattle in the exhaust. Initially i thought i must've dropped a valve so should count meself lucky if its just the turbo but i dont understand why i wasnt even ragging it

There was no dump-valve could that make a difference?

reisskahn

Also can anyone recommend a good place where i can get it reconditioned?

stage 3 muppet

before you do anything pal i would check the turbo oil feed pipe isnt blocked!!!

take top oil feed pipe off the turbo ,remove coil lead so it doesnt start then place end of feed pipe into a clear small bottle and crank it over .
make sure it isnt blocked ..

reisskahn

Thanks for the info will defo check that....

R5FORD

iTrader: (1)

sounds like oil starvation to me

reisskahn

Thats what we initially thought but:

1.) Oil was checked prior to starting car from cold and was just at/above the max mark. Could being just above max make a difference?

2.) When the car was miss-firing/holding back is the oil circulation stopped/disturbed as this was the original problem which i was trying to rectify?

3.) There was no smoke on idle prior to this happening take it the oil seals in the tubo were ok or not nessescaraly?

Its now giving out white smoke from the exhaust and around the turbo/downpipe what is that indicating?

cheers

reiss

R5FORD

iTrader: (1)

mine shit itself du to oil starvation, had no signs of it being starved of oil, even checked the line etc but when the turbo was taken apart the conclusion was oil starvation, i has white smoke come out from my aifilter

tabetha

The bearing/surfaces are shagged, no doubt due to foreign matter in the oil supply.
I would use the TURBOCENTRE 01924 404112, speak to Andy Or Craig, they will soon sort you out.
The damage is on the exhaust side of the bearing ring, so that is why you have white smoke not blue.
tabetha

Turbocabbie

i would use vince from cr turbo's myself

RWD_cossie_wil

iTrader: (9)

Reiss give me a ring on friday mate, I will drop over If I get chance and have a look for you

reisskahn

RWD_cossie_wil: Thats great really appreciate that. Will hopefully call you on Friday fricken cossies

Turbocabbie: Will hopefully call CR TURBO see whats the crack with getting mine reconditioned...

tabetha: Again will call TURBOCENTRE but how can a foreign matter enter the oil? Is there any chance anything could've entered the engine side of things?

costina

iTrader: (1)

Me too and a good price

Paul

garrett-killer

i noticed the same thing on my t34,
it didnt spin on idle,

it made good boost,no noise and dont need oil or anything.

2month ago i rebuild and balanced it,
the bearings and the wasnt the best,but looks ok,
also the blades look good.
on the first start is looks very similar to your video.

is it normal that it stop to spin on idle?

best regards chris

Mike Rainbird

iTrader: (3)

If you have a rattle in the exhaust, make sure a turbine blade hasn't let go, as this would cause the turbo to go out of balance and then lunch itself completely. This is a common thing to happen to a T34 running such high peak boost.

R4N SS

iTrader: (6)

t34s can fail - i used to change mine on almost every service

Tim

iTrader: (1)

After doing 3 in a row i would tend to agree

xr4x4rs

iTrader: (5)

mine failed last night

its only done 60 miles

was not impressed

i primed the turbo as normal, it runs a filter aswell

had fresh oil in it

took it out and it sounded like it was surging, so put it down to the tps messing with the amal valve, until i noticed i was on getting 10 psi

turned round to go home, heard a loud clinking noise as if the prop was hitting the exhaust then nothing, boost gauge read zero

im in the middle of taking it off as its being picked up tomorrow for inspection ,to say im very unhappy is an understatement

it isnt starved of oil as it has a brand new oil feed line aswell and is on 2wd set up so gets almost instant oil supply, return isnt block either, and no particles came from the air filter

so this should be interesting

but when i first fitted the turbo and we fired the car up there was a strange ratlle, it sounded like a aux belt tensioner going, so i put it down to that, as never in a million years id think it was a brand new turbo, guess i was wrong

but yes turbos can shit them selves instantly

reisskahn

Mike R am hoefully whipping the turbo of anyway (only drove it off boost to get home its been parked up since)

Would you say thats a lot of boost for the turbo as Karl set it up for me and would've advised me if it was going to cause problems? Lot of he turbo companies are saying they only recommend me running 22psi on it

Ive picked up a replacement one but dont really want to fit it without finding the cause first or thinking about getting this one fully reconditioned with possibly a ball-bearing fitted into it

reisskahn

xr4x4rs: Thats not good mate sorry to hear that.

Think ill finally have to accept the fact that cossies are Time Bombs just waiting to EXPLOD

Mike Rainbird

iTrader: (3)

It would certainly need a 360° thrust bearing on it at that level?

xr4x4rs

iTrader: (5)

ime bombs aint the word mate

i almost turned mine into a bomb fire the way its be playing up with me lately

smokey

My t34 digested a bit of my K&N filter!

cossie4i+

iTrader: (15)

Not even more problems Rich

Steve.

COCHYN

m_nettleship

midland turbos, did a good job 4 me, quick aswell.

im sorting thinking, oil starvation, and it chucked a blade. ie the rattle.

how many miles had the turbo done reiss, and didnt it have the misfire on the rollers at nobles couple months back?
Have u checked the turbo oil feed pipe, mine was a new braided one. peice of mind.

Do you run water cooled Turbo?

Was it 360 bearing?

sorry if u allready answered some of these questions. rushed reply.

reisskahn

m_nettleship: Supposedly the turbo had a 360 bearing and had only covered 1000miles from new but was in storage for 4 years when i purchased it. Ive only done like 2000 miles on it tops no more and yes it was water-cooled.

I was trying to rectify the miss-fire from the Nobles Rolling Road Run. Funny thing is car drove up fine prior to it going onto the rollers and since then its just been a miss-fire headache and now the turbo

Will check oil feed line but is there anything else i can check?

m_nettleship

if it was me, i wud have prob sent the turbo away 4 rebuild 4 years is a long long time. Did you u pre oil the turbo b4 installing, or turn the engine over to get the oil there b4 u fire it up?? The seals may ahve gone hard dreid up etc etc.

unbolt the oil feed of the turbo, and then turn to engine over on the key, with alot of rag and clothes ready around the pipe, take a lead of to stop the car firing up though.

If i remeber the misfire was slight wasent it?? wat injectors u running, wat chip, wat plaugs, wat ht leads

reisskahn

m_nettleship: The spec is:

Greens
Denso IK27
Motorsport 909 Leads
NMS LIVE MAP (chip)

Like i said its was mapped last October ran sweet until i had it put onto the rollers were the miss-fire started and never stopped since.

Pretty sure we would've pre-oiled the turbo but i had no problems during the last 2000 miles. Ill hopefully take the oil feed pipe off tommarrow and see what happens. Either way turbo needs to come off

m_nettleship

GREENS and i read 30psi. Thats not good.

you running a distributer or coil pack conversion, phase sensor might be nackerd in the bottom of the distributer. it will misfire under load. but will rev freely no problem.

qI wud take the water system of the turbo aswell. best think i ever did,

reisskahn

Running the std dizzy had a new phase and crank sensor lined up but thought i'd try some 701 plugs which were working fine in another car. Was on the test drive when the turbo spilled its beans.

30 psi well thats a short/burst peak that its seeing but like mentioned before it was Mapped by KARL who clearly indicated that the way its been mapped its all safe and thats all i needed

Ill hopefully be whipping the turbo off pretty soon and take it from there...

m_nettleship

it must to lean,, i no karl and i think hes the best going, touching 30psi on greens is asking 4 alot of trouble.

fuzzy

i wouldnt bother reconditioning . they tend to not last very long and as a brand new T34 can be had for about Ł700 ive found recon is a false economy.

m_nettleship

How u work that 1 out?

Ł200 rebuilt turbo. prob get a new shaft and seals 4 that.

reisskahn

what do you mean, if thats the case like am sure Karl wouldn't have mapped it like that Could that also have anything to do with the turbo going pop or not really?

Cant be arsed to whip the turbo off at the moment but likely going to get it fully reconditioned ill see how it goes

mechanic28

iTrader: (5)

Karl would not have mapped it lean the whole point of a live map is too get the most out of your engine safely!mine is set to 30psi,27 mid 23 at rev limiter mapped by karl!i would say your turbo has just died due to the fact its been sitting around for so long!

reisskahn

Fair play and no disrespect to Karl he does know his stuff i just told him do whatever you gotta do to make it fast and reliable as it can be and thats how he mapped it.

If the turbo sitting around was an issue surely we would've noticed problems/smoke straight away like. I mean its done 2000 miles unless the guy blagged it to me and it aint what he said it is. Oh well could've been worse

mechanic28

iTrader: (5)

indeed fella!sods law!