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Old 20-10-2008   #16
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Re: Dump valve?

exactly. but my view is if anybody wants a little dump noise without spending loads. jsut modify the re-circ.

bonalume are designing an atmospheric valve that goes in place of the re-circ ont he t-jet and is operated using the standard wiring plug.
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Old 31-10-2008   #17
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Re: Dump valve?

Can anybody please take a pic of there t-jet engine and mark on it the part you need to remove to get the dump valve sound please. and also, once removed is it easily replaced or do u have to break clip etc to get it off. Thanks Joe
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Old 31-10-2008   #18
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Re: Dump valve?

Quote Originally Posted by Repsol Joe View Post
Can anybody please take a pic of there t-jet engine and mark on it the part you need to remove to get the dump valve sound please. and also, once removed is it easily replaced or do u have to break clip etc to get it off. Thanks Joe

If you have to ask that I seriously suggest you leave it a lone and If You HAVE to do with get someone who's in the know. Its really not worth breaking something.
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Old 31-10-2008   #19
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Re: Dump valve?

I good idea which part it is just want to check thats all, thats why I have asked for a pic
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Old 31-10-2008   #20
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Re: Dump valve?

say your looking a the engine from the front the pipe that runs along the top of the engine the drops down the right side. that elbow there were it tee's into another pipe
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Old 31-10-2008   #21
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Re: Dump valve?

Heres your pictures matey!
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Old 31-10-2008   #22
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Re: Dump valve?

star man is the elbow easily replaced
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Old 01-11-2008   #23
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Re: Dump valve?

well yes! put it back on with some jubulies and engine cover.
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Old 01-11-2008   #24
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Re: Dump valve?

Is this possible on the M-Jet?

P
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Old 02-11-2008   #25
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Re: Dump valve?

Im sorry im not a diesel man you mite have to ask some one who has a gps m-jet
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Old 02-11-2008   #26
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Re: Dump valve?

I'd say leave the diesel alone. As far as my ol' skool knowledge of diesel engines goes, they don't really need a pressure release because they don't use throttle butterflies to increase engine RPM.

When you hit the throttle, the fuel rail opens up and sprays more fuel in. More fuel = more power and thus acceleration. Turbo spools up and pushes more air in.

Different to petrol engines where your throttle is connected to the air intake (basically) and more fuel is added when needed.

I could be totally wrong. This is how old diesel engines were made. I'm not sure of how modern day diesels work.

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Old 02-11-2008   #27
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Re: Dump valve?

Quote Originally Posted by pipsqeek View Post
I'd say leave the diesel alone. As far as my ol' skool knowledge of diesel engines goes, they don't really need a pressure release because they don't use throttle butterflies to increase engine RPM.

When you hit the throttle, the fuel rail opens up and sprays more fuel in. More fuel = more power and thus acceleration. Turbo spools up and pushes more air in.

Different to petrol engines where your throttle is connected to the air intake (basically) and more fuel is added when needed.

I could be totally wrong. This is how old diesel engines were made. I'm not sure of how modern day diesels work.

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Exactly that

You can fit a induction kit and if you time it right you can hear the wastegate .
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Old 03-11-2008   #28
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Re: Dump valve?

Has anybody installed the aftermarket bonalume waste gate to there t-jet yet? if so wats your views on it
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Old 03-11-2008   #29
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Re: Dump valve?

Also what is that valve called that u take the rubber elbow off, is it just a recirculating valve
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Old 03-11-2008   #30
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Re: Dump valve?

How can you change a wastegate? Its part of the turbo?!
People seem to get confused between wastegates and dump valve, i dont know why because they are two completely different things.

A wastegate is a flap in a turbo which is controlled by an actuator which open the flap up when a certain boost pressure is reached, to stop the engine over boosting.

A dump valve is a device which allows air to be released out of the post turbo intake system, which is supposed to stop the turbo stalling and back spinning when the throttle body butterfly is closed

Also, when people say they can hear "wastegate chatter" they are actually referring to the turbo stalling and back spinning, which makes that chopping sound, this can be heard through an induction kit.

So people that mention they are getting a wastegate valve instead of a dump valve have no idea what they are on about
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