Blown Turbo

[OVADRV]

Hi ppl i have taken some pics of the turbo i have only checked the compressor side so far

the turbo is a slide hiflow stage 3 on a r33 on 15 psi

its only been on the car for a year and a bit and properly tuned and only driven on the weekends

also it also has alot of play as is shaft is bent

what has caused this??

[dano4127]

bugger, another one bites the dust.

Foreign object?

Just outside warranty anyway so new turbo time for you which ever way you look at it

EDIT: I have a stocker for sale if you need one to keep you out of trouble PM me if your interested

Edited February 29, 2008 by dano4127

[R31Nismoid]

And thats another one gone

[OVADRV]

as in another turbo or a slide turbo gone?

[dano4127]

another slide one

[OVADRV]

ok if its another slide one someone should know why this is happening,

i dont thinks a foreign object,maybe could be bush bearing failing?

[teazn_r33]

you had a pod on at all times yer ??

[OVADRV]

standard air box,and i dont think anything smaller than a flea can get past the afm

[OVADRV]

ok ppl time to close this thread did some searching on this turbo, seems most the ppl have had the similar problem with this hiflow,as they werent balanced properly which in time result of the wheel becoming unbalanced and then killing the cartridge itself(which explains my massive shaft play).may have been a small mis balance. i spose the balance issue will become bigger and then one day bang.not happy at all.

[shnaped_second]

fark thats no good mate, another reason why i dont trust the slide high flows

[Slide]

If the turbo was not balanced properly the turbo would fail as soon as the car was first driven.

As soon as it pushed through a shaft speed barrier where it would become unstable the turbo would fail.

There has been around 10 failures now out of hundreds and hundreds sold though us and although in their day they were faultless towards the end of us supplying these through Murnane Motors the quality and service which we demanded could not be supported by the main manufacturer without constant supervision by us.

Subsequently that business closed down and was sold (now under new ownership) and deserted what was a very good arrangement which we provided to Skyline owners.

It was a shame and they have not been made for over 9 months now.

[Tangles]

something has gone into those fins

surely

my Slide hiflow is tuned to 1bar and seeing 1.1 WOT, going happily for 16 months so far

[OVADRV]

ok not bagging the turbo i loved it,please explain what has happened then,nothing has gone through the compressor side as i have standard air box also what ever enters the airbox has to pass the afm

[Slide]

The main reason for journal bearing turbo failure is oil contamination or oil starvation.

This is where the bearings are either starved of oil and metal touches metal and where contaminants come between the shaft and bearing making the frictionless bearing system not so frictionless, in turn the bearings grab the shaft and your left with what looks like a train crash.

No residual manufacturing defect can really cause problems for a turbo a year down the track.

Cheap Chinese turbo's have hub explosions and bent shafts etc from the cheap cartridges and backing plates either cracking or warping from heat soak, this has never been the case with any highflows i have heard of being made as only Garrett make the cartridges that are a direct fit hot and cold side for the standard Nissan cartridges as they were originally made as replacements for VL turbo cartridges.

With there being no visible scuffs or scrapes in the mouth of the turbo (from what i can tell in the pictures) i would think it was one of the above problems with oil.

Either that or a very hard hot shut down.

This usually happens on dyno's though or very shortly after.

[full house]

well, thats a great turbo you have there!

[OVADRV]

could be oil starvation i havent taken then turbo off so i dont know yet,with hot shut down which i never do as my timer is timed for 3 minutes and i change my oil every 5000km.

[OVADRV]

i spose we will wait and see when they pull it apart,i will have pics for u guys

[tacker]

if it was a oil related problem how would the leading edge of the blades get knocked around like that.

[Slide]

Oil starvation at high shaft speeds can and would cause the shaft to decelerate alot, with the bearings spinning whilst the shaft does when there is starvation you get bearing drag which then in turn means the shaft is spinning the bearing which would cause a multitude of problems which happen in seconds from decel which can snap a comp wheel off at the shaft, this happens when the comp wheel grabs the housing. Shaft weights change with bearing drag which causes the turbo to be out of balance which looks like what happened above.

It is the same reason why you would spin a bearing in your motor, too much oil in the head not enough to lubricate the bearings.

[OVADRV]

why is the turbo starving from oil??