Model is 2ltd turbo diesel Whistling noise from engine compartment, which gets higher tone with revs. worst when cold.

turbochargers will "wind down" on diesel engines..this is a normal funtion unless the blowdown circuit cuts in then it momentarily sounds like no exhaust .. its just loud..does this have a cummins in it?? some use caterpillar but thats kinda rare..

If the engine is a diesel that is equipped with a turbocharger, I would look for a pressured air leak at any and all hose connections. Especially when the engine is running at accelerated speeds which cause the turbo to operate as a charger.
Check any and all belts for slipping, Alternator, P/S,etc.,

Hi,
A whislting noise would make me suspect a cracked or broken vaccuum line. Whistling as it sucks air into the system. I would check the biggest one first, on your brake booster. It is a large line coming from the engine to the brake booster assembly located behing the brake master cylinder. I would check all the lines with engine running, have a helper rev the engine slightly while you listen in the engine compartment to see if you can locate it. Also work the brakes simultaneously. Cold weather can make older lines crack which can cause a serious problem depending on which line cracks or breaks. Check all your air lines first and see if you find it in that system before assuming something more major. A crack in other engine system lines will usually produce a fluid leak of some type.....Good luck!..Mike

i would tend to agree with the tech, especially if performance and milage have been on the decline. there are seals in the turbo to keep oil on the bearings, and if the turbo gets hot (which they all do), and wasnt allowed to cool by idling the vehicle a few minutes to circulate the oil on the bearings and cool them, the rubber seald eventually give out which lets lots of oil run thru into the intake and finally into the engine where its burned off. as for the warranty om unsure, but you can try looking for a used turbo, or a reman unit and install it yourself.

Unless something has gone horribly wrong with your vehicle, a turbocharger is a maintenance free item. A turbocharger works by using exhaust gas pressure to spin a turbine, wich then sucks and compresses cool clean air into the engine. Depending on what make and model vehicle, you can see how the turbo works by briefly removing the intake tube, from the air-side intake snail. revving the engine, hold your hand over the turbo snail you should feel quiet a lot of air being dispelled from the turbo. No oil should appear on your hands and their should not be any unusual noises, apart from the turbo whistle. Hook it all back up and whilst driving you should be able to feel a small increase in power, through the rev range. Depending on make and model, this will vary at the point this turbo boost comes in to play. Many engines it is around 1900-2500 Rpm. Petrols will be higher than diesels!

Unless something has gone horribly wrong with your vehicle, a turbocharger is a maintenance free item. A turbocharger works by using exhaust gas pressure to spin a turbine, wich then sucks and compresses cool clean air into the engine. Depending on what make and model vehicle, you can see how the turbo works by briefly removing the intake tube, from the air-side intake snail. revving the engine, hold your hand over the turbo snail you should feel quiet a lot of air being dispelled from the turbo. No oil should appear on your hands and their should not be any unusual noises, apart from the turbo whistle. Hook it all back up and whilst driving you should be able to feel a small increase in power, through the rev range. Depending on make and model, this will vary at the point this turbo boost comes in to play. Many engines it is around 1900-2500 Rpm. Petrols will be higher than diesels!

It is but not good, the turbo from a diesel has a lower compressor rate due to the diesel engine has a lower RPM ratting then your Stroker. The higher RPM your engine revs, the more of a restriction to your exhaust from the turbo causing your valves to over heat and then your burn a hole through them or your pistons.
A good size would be a T70 with a 0,96 AR exhaust and if your looking to get more power get the T76 with the 0.96 AR exhaust side. Guessing that the T70 should give you around 550 HP low boost (10 to 12 PSI) and about 600 HP (15 to 18 PSI) around 4000 RPM. Your compression should also be around 8.5:1, anything higher and your going to have detonation issues during your midrange and up and to nuts off your torque ratio that your just going to burn your tires during your boost stage.
Hope this helps explained the difference in diesel turbo and gas engine turbo and i vote for the T70B with 0.96 AR hot side.
Thank you for using fixya and good luck

yes see this all the time, turbo has failed the compressor side.
oil has been feed straight into your engine and lit, this acts as fuel and the faster the engine the more oil, no rev limiter either.
some times it can bend a conrod.
see if the car starts now. if so and runs happy (please note it will not rev up until warm) dont run for no more than 30 seconds.
what you are looking for is a lumpy engine and lots of white smoke. if so you have bent a con rod.
if not remove all turbo pipes and clean out oil, replace turbo.

Its surely not turbo, its is somewhere a hole or leak in turbo air filter housing or air inlet pipe that is making noises when turbo sucks air. check the air pipes wheather they are fitted correctly. Take a keen look at air hose and close any hole with silver tape check the hose is fitted correctly in Turbo air filter housing (if not then it makes whistling noise when air is being sucked by turbo) . Clean all air filters and then give it a go.

it sounds like your turbo has packed in firstly the oil seal in your turbo has failed thats why ur seeing oil from exhaust & the whistling from turbo is the vanes in turbo breaking up so i would advise not to use car until new turbo is fitted & inter cooler pipes and inter cooler itself are checked & cleaned for swarf from turbo you can check turbo by disconnecting turbo pipe &inspecting turbo vanes (fins) to see if broken up or any damage to chamber.