This Porsche 962 Has One Of The Greatest Turbo Wastegate Noises Ever

Do you like the STUTUTU of a ridiculously massive turbocharger? Let your ears melt with delight at the sound of this on-board Laguna Seca footage

Michael Fernie

25 Aug 2016

After on-board footage surfaced from a Porsche 908 competing at Laguna Seca last week, more wondrous footage has surfaced in the shape of this visor-cam video from the cockpit of a Porsche 962 endurance racer.

The heavily-turbocharged flat-six racer was once driven by British driver Derek Bell and could be tuned to upwards of 600bhp, bringing with it one of the greatest turbocharged orchestras of all time.

Comments

That my dear fellow is the stuff of wet dreams!! :-P

VWOOOOOOM!!!! TSSHHHHHH!!!!!

It’s not wastegate noise, its compressor surge due to not having/inadequate blow-off valve. Wastegate is on the exhaust side of a turbo, this sound is on the intake side :)

Compressor surge is when the turbo is producing more boost than the engine can physically handle, and pushes air back through the turbo and stalls the compressor wheel while on boost. That kills turbos and dramatically shortens the life of your engine.

This is just fairly harmless turbo flutter that happens when there is no BOV and the air goes back through the turbo when you let off the gas.

Wastegates don’t make noises do they? If anything it’s the BOV, wastegates regulate turbo boost.

The “Stututu” is not coming from the Wastegates… just saying.

Did they only have the microphone of the cam on the helmet? If so, these turbos are damn loud!

Louder than your girlfriend last night

I thought people here knew the difference between a Wastegate and a Blow of valve,

A wastegate is on the Exhaust side of the Turbo and is there to restrict boost pressure, If boost pressure get’s to high a valve will open and will let exhaust gasses bypass the turbo, This so that the turbo won’t go faster and create more boost and damage the engine,

A Blow off valve is attached to the intake and releases all the pressure in your intake as soon as you close the throttle, This is to prevent air racing back in the turbo and slowing it down, Wich means if you release the throttle your turbo will keep it’s rotating speed and will not slow down as fast, Ofcourse over time the turbo will slow down and does need to spool up again if you open the throttle.

The more you know :D (Edited because I also had a mistake in my post, For the record, this is how my teacher explained it to us in school, So he also got his stuff wrong. Thanks for the edit)

A blow of valve is located between the turbo and the engine. Its goal’s to prevent the already compressed air to come back in the turbo when the throttle’s closed. To avoid any damage. But it doesnt keep the turbo spinning… For that you’ll need antilag ! Because when you close the throttle, there is less air coming in the engine, so the turbo slows down…

The waste gate doesn’t “let excessive pressure go straight from the intake to the exhaust” !
It lets exhaust gases bypass the turbine.

“So at 1.1 bar the valve opens and lets the excessive pressure go straight from intake to the exhaust,” thats one weird wastgate u having there, isnt it letting ur turbo to overspeed ???