Deisel chatter

[Coxxy_94GT]

I heard a golf tdi go past the other day and when it chattered it got me thinking . Does anyone know why when a turbo fitted to a deisel engine chatters it sounds so diefferent to one fitted to a petrol engine ? Or is it just me ?

[Glanza-Ben]

Block the dumpvalve up on a petrol turbo and will chatter well

[Gainzy]

Diesel chatter is gash lol

[kavan-k]

Do you mean a "chooooooo" when you change gear? Haha every golf/jetta/bora round my way does it, straight pipe from mani back and there you have it lol

[Jim*]

Do you mean a "chooooooo" when you change gear? Haha every golf/jetta/bora round my way does it, straight pipe from mani back and there you have it lol

Exactly the same around my area too, even worse they all think it sounds great and does my fucking head in!

[JayJ]

Main reasons for the diffrent chatter sound is that diesel motors have lower rev range, colder exhaust gases, lower turbo spin speed and no back pressure on throttle close.

[daniel_g]

Theres a diesel vectra round my way that does it and it sounds like a pigeon sneezing

[Coxxy_94GT]

Ahh fair one jayj i just wondered was all . Ah ha they do sound like pigeons aswell

[funny onion]

I always thought it was because of the lack of back pressure when the throttle closes. got a few boras round here that seem to chatter forever lol.