Ford Sierra RS500 Cosworth // Turbo Flutter, Drift and Flames

Alexandros Roustemis races a pretty spectacular Ford Sierra Cosworth unit on the Greek Hillclimb Championship.
With over 400Hp from the Cosworth YB Turbo engine all going to the rear wheels in brutal fashion, this #HillclimbMonster is driven up to the limit of grip and a bit beyond.
Rejoice in all the Turbo Flutter sound, flames from the side exhaust and some very well controlled drifts from this iconic machine.

[@Poorgeniu5]

Forget about the time it clocked, this will win first place for "Best sounding" award.

[@seamusblack5876]

how could two people not like this?

[@UltraZzTV]

If Flipper was real he'd date that car. Orgasmic beautiful flutter sound

[@avandam82]

Raw Cossie power! Love it!!

[@deadseriousforsure]

I'm in love!

[@B5Limo]

THANK YOU 😂👍🤤

[@warrenbartram6947]

Sounds like the old Quattro on LSD

[@thatcarguy6190]

Excellent! 😍

[@paulsoames7980]

Reminds me of myself taking the kids to school

[@panos323]

Ελλαδαρα

[@robotaz]

nr one

[@wraithgard]

Thats the sound of no BOV.

[@maaanoooz]

What is it that causes it? Back pressure from the exhaust?

[@MrCornholios]

Thats because the air stalls in the intake and turbo when the throttle is closed, then the compressorwheel cuts the air and makes this twitter noises.
Its called compressor surge correctly.

[@wraithgard]

I wouldn't call it true surge as there's no load on the turbocharger when it happens (very low exhaust flow trying to force the turbine to keep spinning in one direction) as the throttle is closed. Real compressor surge is very destructive to the turbo and happens when the compressor is moving more air than the engine can consume with the throttle fully open, causing surge as the turbo gulps for more air.

[@MrCornholios]

There is load on the turbocharger as long it turns in one direction.
You can hear it spins down after closing the throttle every time.
So its clearly compressor surge.

[@wraithgard]

Its load is from inertial rotation, not the engines exhaust forcing it to spin. They don't compare in terms of how destructive they are. Real surge wrecks turbos, flutter just sounds cool.

[@SKARKIBANEZ]

Ρε.........Ελλαδα ειναι αυτο?
Εδω σε "μας"?

[@iloveslideking]

Ναι, ο Ρουστέμης.

[@antonisoyk5430]

Δωσεεεε.....

[@ricardopereira2746]

Is this a REAL RS500? As in one of the 500 converted by Aston Martin Tickford?

[@johnsmith-nl3js]

they are the only rs500s!

[@diegocostaonline]

Thats amazing!! We shared it and tagged you on the biggest Ford brazilian car show Instagram! instagram.com/fordaybrasil thanx!

[@farshrzg]

че творят греки