Blown Turbo ????

[robp]

Matt_FP said:

(I always recommed Turbo Technics as they have rebuilt a lot of units for us with no issues and are the chaps who developed and manufacture the VSR machine used by most other companies to balance the CHRA)

Couldn't agree more..dealt with them for about 3 years building, repairing and servicing my EliseTT230. Great bunch of guys with real can-do attitude. Very Noble-like.

[Siban]

Turbo Technics gave me two new Turbo's for £450 each and they give them a two year warranty. It depends on what they find when they go to refurb the Turbo unit, mine were beyond economic repair so two shiny new ones with a warranty was the option for me.

Mine only took so long as it originally went in for a failed diff, then one of the Turbo's went after refit, followed by a late assessment that the diff failure had taken the gearbox out with it.

[robp]

Matt - judging by some of the comments in the thread, it sounds like we are talking about a Magimix rather than a Turbo, what with gaskets, lambda sensor shrouds and other sundry items getting minced up. Is there any external visual inspection you can do to provide some reassurance that your turbos are OK and in fine fettle? Or is it simply a case of 'you'll know about it, if they (or one of them) are not OK?'
Ta
Rob.

[Matt_FP]

Rob,

Simple inspection is to remove the intake hose to the turbo and check how much play is present, this is achieved by gently moving the compressor wheel via its retaining nut, anymore than slight side to side play and very slighty fore/aft play = worn bearings.

Failed turbine seals will show up as blue smoke during extended periods of hot idle.

Also a visual inspection for carbon deposists on exhausts componets and turbine housing will show failed gaskets.

Best Regards
Matt

[robp]

Matt_FP said:

Simple inspection is to remove the intake hose to the turbo and check how much play is present, this is achieved by gently moving the compressor wheel via its retaining nut, anymore than slight side to side play and very slighty fore/aft play = worn bearings. Failed turbine seals will show up as blue smoke during extended periods of hot idle. Also a visual inspection for carbon deposists on exhausts componets and turbine housing will show failed gaskets.

Many thanks Matt - very helpful.

[gadgeroonie]

The company that developed and builds the turbo's for Noble is

www.universal-turbos.com/head.htm

Turbo's fail for seveal reasons

Oils seals - overheated turbo, the engine normally smokes with blue smoke
bearings - this is normally caused by oil starvation - or oil contamination (big wing sump can help here)
tubine wheel - the exhaust turbine wheel is damaged - due to the engine running lean, or something coming out of the engine
compressor wheel - something has been sucked into the turbo, or a poor air filter

what EXACTLY went wrong with your turbo's

[joust]

gadgeroonie said:

The company that developed and builds the turbo's for Noble is www.universal-turbos.com/head.htm

??? I thought the Noble ones were OEM T25's

I don't see any mention of them being an OEM manufacturer for Garrett, just that they rebuild / recondition turbos, so not sure what you mean by your posting?

J

[Mr Noble]

Justin YHM

[Siban]

So the seals had gone on my front turbo (lots of blue smoke), but both had excessive wear on bearings.

[gadgeroonie]

That sounds like oil contamination - or oil starvation

this can happen if you corner really hard and the oil pump sicks up air instead of oil

the feed to the turbo's comes straight from the oil pump outlet

does the noble have a baffled sump ?

[Siban]

If you have the track day sump fitted then yes it does. I had this fitted to mine after I purchased it so I dont know if the previous owner tracked the car before and caused the damage then. Of course I was told the car had never been tracked........