Gambit
Member
Registered: 5th Jun 00
Location: Common Sense HQ
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is this true:-
Diesel dump valves dont work off the turbo, as there diff to petrol turbos. They use a solinoid and work from vacuum created by the brakes. and there really only for mechanical diesels- not new electronic diesels.
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vibrio
Banned
Registered: 28th Feb 01
Location: POAH
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no DV's are not ment for any sort of TD. putting one on makes you gay
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Gambit
Member
Registered: 5th Jun 00
Location: Common Sense HQ
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i know DV's are gay, i just wanna know if he is correct in what he is saying
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Kris TD
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Registered: 25th Mar 02
Location: Ware, Hertfordshire
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the plumb in as normal, they use something like an egr valve connected to the vacuum from the servo. yes they are pointless, they lose speed as they dump all the boost so the turbo has too spool up again.
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Kris TD
Member
Registered: 25th Mar 02
Location: Ware, Hertfordshire
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as for mech or ecu controlled, you an get kits for both. personally i think they are counter productive though and quite silly.
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Tam the diesel man
Member
Registered: 31st Jul 01
Location: Portsmouth
User status: Offline
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and they sound like wet farts! much prefer spending the money on other things
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MattyB
Member
Registered: 13th Nov 01
Location: 118.5bhp :D
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quote:
Originally posted by Tam the diesel man
and they sound like wet farts! much prefer spending the money on other things
No mate - i dunno wot kits u've seen or heard, but mine is alot louder than ANY petrol cossie or scooby i've heard with one (although i turn mine down). However, it purely comes down to how much boost ur at.
Even as standard, TDs make alot more boost pressure than petrol cars, and use exactly the same kind of DV, so there isnt any possible reason for them to sound different.
Matt
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Gambit
Member
Registered: 5th Jun 00
Location: Common Sense HQ
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but is my initial statment true or false god dam it!!
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MattyB
Member
Registered: 13th Nov 01
Location: 118.5bhp :D
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quote:
Originally posted by Kris TD
yes they are pointless, they lose speed as they dump all the boost so the turbo has too spool up again.
Atmospheric dump valves on petrols do the same
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MattyB
Member
Registered: 13th Nov 01
Location: 118.5bhp :D
User status: Offline
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quote:
Originally posted by Gambit
is this true:-
Q: Diesel dump valves dont work off the turbo - as there diff to petrol turbos.
A: The dump valve on a TD still dumps air that has been spun by the Turbo
Q: They use a solinoid and work from vacuum created by the brakes
A: Yep thats correct
Q: And there really only for mechanical diesels- not new electronic diesels.
A: No - kits available for both. There is no reason for a mechanic OR ecu managed turbo D to have a DV
OK?
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Gambit
Member
Registered: 5th Jun 00
Location: Common Sense HQ
User status: Offline
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a thank you
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Kris TD
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Registered: 25th Mar 02
Location: Ware, Hertfordshire
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quote:
Originally posted by MattyB
quote:
Originally posted by Kris TD
yes they are pointless, they lose speed as they dump all the boost so the turbo has too spool up again.
Atmospheric dump valves on petrols do the same
ah but they still have a function. dont forget turbo cars draw a vacuum when you lift off the throttle, this will slow the tubo down even more than not having a dv atall.
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MattyB
Member
Registered: 13th Nov 01
Location: 118.5bhp :D
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quote:
Originally posted by vibrio
no DV's are not ment for any sort of TD. putting one on makes you gay
U believe most people who do not abide by or agree with things you say as being gay. It is nothing new.
But please note - what vibs is saying is, anyone with an atmos DV on their car is gay.
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MattyB
Member
Registered: 13th Nov 01
Location: 118.5bhp :D
User status: Offline
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quote:
Originally posted by Kris TD
quote:
Originally posted by MattyB
quote:
Originally posted by Kris TD
yes they are pointless, they lose speed as they dump all the boost so the turbo has too spool up again.
Atmospheric dump valves on petrols do the same
ah but they still have a function. dont forget turbo cars draw a vacuum when you lift off the throttle, this will slow the tubo down even more than not having a dv atall.
Yep i know - and on the Pug DTurbo, i know of 2 people who have had to have their turbo's replaced since having their boost uprated. The conclusion was, that the increase in air pressure cause turbo damage + failure. Niether had a dump valve.
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Tam the diesel man
Member
Registered: 31st Jul 01
Location: Portsmouth
User status: Offline
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heard a few dv's on 306's. was planning on one for my new engine but i think the money will go on some other tuning goodies 
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Kris TD
Member
Registered: 25th Mar 02
Location: Ware, Hertfordshire
User status: Offline
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quote:
Originally posted by MattyB
quote:
Originally posted by Kris TD
quote:
Originally posted by MattyB
quote:
Originally posted by Kris TD
yes they are pointless, they lose speed as they dump all the boost so the turbo has too spool up again.
Atmospheric dump valves on petrols do the same
ah but they still have a function. dont forget turbo cars draw a vacuum when you lift off the throttle, this will slow the tubo down even more than not having a dv atall.
Yep i know - and on the Pug DTurbo, i know of 2 people who have had to have their turbo's replaced since having their boost uprated. The conclusion was, that the increase in air pressure cause turbo damage + failure. Niether had a dump valve.
yes maybe, but fitting a dumpvalve wont solve that atall. if they did prolong turbo life then they would be fitted as standard. the reason is that there turbo is too small for the boost they are shoving through it.
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vibrio
Banned
Registered: 28th Feb 01
Location: POAH
User status: Offline
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quote:
Originally posted by MattyB
quote:
Originally posted by Tam the diesel man
and they sound like wet farts! much prefer spending the money on other things
No mate - i dunno wot kits u've seen or heard, but mine is alot louder than ANY petrol cossie or scooby i've heard with one (although i turn mine down). However, it purely comes down to how much boost ur at.
Even as standard, TDs make alot more boost pressure than petrol cars, and use exactly the same kind of DV, so there isnt any possible reason for them to sound different.
Matt
not louder than mine. also you don't produce more boost than me as standard 
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vibrio
Banned
Registered: 28th Feb 01
Location: POAH
User status: Offline
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quote:
Originally posted by MattyB
quote:
Originally posted by vibrio
no DV's are not ment for any sort of TD. putting one on makes you gay
U believe most people who do not abide by or agree with things you say as being gay. It is nothing new.
But please note - what vibs is saying is, anyone with an atmos DV on their car is gay.
I personally find some cars with atmospheric valve sounding gay. e.g cossie, punto with a bailey or collins. I did like mine but it was crap on performance as far as I was concerned.
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Scott
Member
Registered: 11th Mar 01
Location: Kilmarnock,Scotland
User status: Offline
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quote:
Originally posted by MattyB
quote:
Originally posted by Tam the diesel man
and they sound like wet farts! much prefer spending the money on other things
No mate - i dunno wot kits u've seen or heard, but mine is alot louder than ANY petrol cossie or scooby i've heard with one (although i turn mine down). However, it purely comes down to how much boost ur at.
Even as standard, TDs make alot more boost pressure than petrol cars, and use exactly the same kind of DV, so there isnt any possible reason for them to sound different.
Matt
306 td louder than scoobies and cossies 
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Marc
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Registered: 11th Aug 02
Location: York
User status: Offline
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Stone Cold Rattlesnake
Member
Registered: 12th Jun 02
Location: London .................. Drives: Astra IV
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No point puttin a dump valve on a TD, its useless just for sound
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Visionz
Member
Registered: 9th Aug 04
Location: Derby
User status: Offline
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its not useless for sound, cause sounds the only thing is can do. Its just not v. gd at it
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