How To Make A Cummins Turbo Flutter

October 11, 2021

This air exiting through the exhaust turns the turbine. Discussion Starter 1.

Putting A Bov On Dodge Cummins Diesel Forum

The wastegate is in the exhaust so dumping boost out of it isnt very possible.

How to make a cummins turbo flutter. I have about 13000 miles on a 08 mega cab 34 ton 4x4. The turbine spins which causes the compressor to spin. Too much load per given rpm is the main cause.

1 of 3 Go to page. Ok lets see if anyone else has had this issue with there 67L. So the turbo starts to make boost boost enters the rubber hose to an actuator head and when boost hits say 20 psi the diaphram controls the flapper in the exhaust housing to bypass exhaust.

Get yourself a pyrometer to measure exhaust gas temperature EGT and a boost gauge to keep tabs on the turbo. In a turbocharged engine instead of simply exiting as described above the exhaust air is used to create additional power. The air that remains after combustion is expelled through the exhaust manifold.

I was driving upa steep hill on a curvy road at around 7000ft with no load with an outside temp of 38 deg F at 35-40mph. Jump to Latest Follow Hey everyone. 1 - 20 of 45 Posts.

Did your silencer ring make it louder. The first day it happened. But when you think about it logically for a moment if youre running massive boost say above 2bar it would make sense to dispose the copious amounts of highly.

The turbo would flutter like that as the rpms came down. The wastegate opens at a certain boost level which is controlled by boost by the acuator arm and its purpose is to expel excess exhaust so boost levels dont reach to high. Whilst running no BOV to achieve flutter may put slightly more wear and tear on turbos theres no solid evidence out there that it will outright bend fins and break your turbo.

Examples going up a hill in a RPM too low having your AC on in an RPM too low a turbo that spools very easily under load small turbine housing. With the throttle body closing pressure builds in the InterCooler tubing and backs up back into the turbo since the bypass route stays closed causing increased strain and rapidforced deceleration of the turbine wheels inside the turbo. Also if he takes the turbo off for the wicked wheel which in my opinion isnt worth its value it would be a GREAT idea to replace the doughnut gaskets from the up-pipe to the.

I also have the afe intake. By NZPCMar 19 20168 mins to read. It kinda worried me as it never happened.

While adding easy power to a Cummins is fun dont burn down the barn. This flutter never occurred all summer and I pulled several heavy loads under similar conditions. As a general rule of thumb dont spend a lot of time above 1400 degrees on the pyro or allow the turbo to see 35 psi of boost for extended periods of time.

Joined Oct 9 2008 129 Posts. I have the six speed and a bully dog PMT with boost cooler by bd. Also a blow off valve that doesnt release enough airflow can cause surge or BOV flutter.

Enter your ride HERE to be a part of Augusts Cummins of the Month Challenge. 4 Oct 4 2010 Edited tymar intake kit 100 and 5in exhaust turbo back. Never had any other issues.

I have read several posts on the other board that shall remain nameless and understand that when this happens on deceleration it is normal but. The cavitation or flutter can be fixed by either fitting a blow-off valve onto a system that hasnt got one or making sure the blow-off valve is matched to the output of the turbo and is not working outside its flow capacity and ensuring the blow-off valve is set up correctly. I have an issue with turbo flutter when accelerating usually under load.

This is what makes the flutter sound pressurized air trying to get back through the still spinning turbine wheels. I also posted this at the evil place so some may have already seen this. The temp outside was around-17 degrees celcius.

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