How much side play should a turbo have?
For a new journal bearing turbocharger, a little side to side play is perfectly normal as the space between the shaft and bushing would be taken up by oil pressure during turbo operation. However, a brand-new journal bearing turbocharger should have zero forward and back (from compressor end to turbine end) play.
What is a shaft play?
Shaft play is caused by the bearings in the center section of the turbo wearing out over time. When a bearing is worn, shaft play, a side to side wiggling motion of the shaft occurs. This in turn causes the shaft to scrape against the inside of the turbo and often produces a high-pitched whine or whizzing noise.
How much shaft play is acceptable in a turbo?
While there is always going to be shaft play in a journal bearing turbo, the allowable tolerances we’re talking about is 0.003″-0.010″ which isn’t much to really notice. If you have 0.020″ of shaft play, the bearings are worn and it’s going to wear at a much faster rate as opposed to bearings that are within tolerance.
How do I know if my turbo is shaft play?
So to check a turbo charger to make sure there is no forward and back shaft play you essentially just grab the front of it and pull it forward and back with your hands.
How do you tighten a turbo shaft?
Can a turbo shaft nut loosen during operation? – YouTube
Why do I have oil in my turbo?
If there is too much oil in the pan or if the turbocharger in your car is relatively lower, then oil can get through the seals and begin to blow out. Oil Pressure Too Low– If the oil pressure is too low, it can cause the internal parts of the turbo to wear out such as the seals.
What happens when a turbo has shaft play?
What is axial and radial play?
Radial play is the clearance measured perpendicular to the bearing axis or more specifically: average outer ring raceway diameter minus average inner ring raceway diameter minus (2 x ball diameter). Axial play is the clearance measured along the bearing axis is known as axial play.
What causes a turbo to whistle?
What causes turbo whistle? Turbo whistle is the sound of the compressor inside the turbocharger speeding up (also known as ‘spooling up’, which is why it kicks in at the boost threshold (when the turbo starts to kick in) as you accelerate up the rev range.
What does a faulty turbo sound like?
Loud noises: If your vehicle has a bad turbo, you may hear loud noises that sound like whining or screeching. So if your vehicle is running and you hear a loud whining sound that increases in volume as the problem goes unfixed, this is most likely to do a turbo problem.
Can you overwork a turbo?
If the turbo continues to over speed, it can over boost the engine, resulting in serious damage to the internal components and potentially complete engine failure !
What are the signs of a turbo failing?
Turbo Failure Symptoms
- POWER LOSS. If you notice that your car isn’t accelerating as powerfully as it used to, or is slow to react to your input, this might be a sign that your turbo is failing.
- WHINING ENGINE.
- EXHAUST SMOKE.
- CHECK ENGINE LIGHT.
- OIL/LUBRICATION.
- DAMAGED SEALS.
- FOREIGN OBJECTS/DEPOSITS.
- WEAR & TEAR.
Why has my turbo started whistling?
How do turbos get shaft play?
Should ball bearing have play?
When a ball bearing is subjected to pure radial loads (or radial load with low axial load), lower radial play is normally recommended. This distributes the load over a greater number of balls. However, particularly with miniature bearings, bearings with low radial play should not be subjected to interference fits.
Should a bearing have play?
As a rule, there should be no play on most FWD cars, but up to . 010 inch of play in the front bearings may be acceptable on RWD cars and trucks with adjustable bearings. If there’s play in sealed bearings, replacement is necessary.
What does a worn turbo sound like?
At what RPM does a turbo kick in?
While your car’s engine revs, at cruise, at around 2,000 rpm, a turbo’s turbine can reach rotational speeds of more than 280,000 rpm. Fine Engineering: The required level of accuracy when designing and manufacturing the size of a turbo’s components is, in some cases, smaller than the width of a human hair.
What are signs of a boost leak?
Boost Leak Symptoms. The most common symptoms of a boost leak are loss of power and a check engine light on the dashboard. You can also notice signs like slow turbo spool, poor fuel economy, and black smoke coming from the exhaust pipe during acceleration.
Do turbos reduce engine life?
No. today’s turbochargers are designed to last the lifespan of the vehicle. The truth is, boosted engines require the same amount of maintenance and care that a naturally aspirated engine does. Does a turbocharger decrease the life of an engine?
How long do turbo engines last?
Many of them are going well past 200K miles with good maintenance.
What color smoke is a blown turbo?
BLUE SMOKE
A turbocharger works by forcing air into the combustion chamber. Like all moving components in an engine, it uses oil for lubrication and any seal problem may cause that oil to leak into the turbo and be blown into the chamber.
How do you test a turbo bearing?
AeroForce Turbo Bearing Check – YouTube
How much play should a bearing have?
Ideally, there should be zero residual radial play in the bearing to minimize ball skidding and reduce axial play (end play) so correct selection of the initial radial play is important. A number of things can alter the radial play during the fitting process.
What is end play on a shaft?
End play is the total distance the shaft can move between the two thrust bearings and is sometimes called float, thrust bearing clearance or axial clearance.