dantheman
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Registered: 8th Oct 03
Location: Alford, Lincolnshire
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is there any way of getting a dump valve from a petrol car to fit on a turbo diesel. will one from a r5 gt go on an astra 1.7td???
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dantheman
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Registered: 8th Oct 03
Location: Alford, Lincolnshire
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anyone???
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Kris TD
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Registered: 25th Mar 02
Location: Ware, Hertfordshire
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you need a box of tricks and noone makes an off the shelf kit for the vauxhall diesels.
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MattyB
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Registered: 13th Nov 01
Location: 118.5bhp :D
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The dump valve itself will be exactly the same as from a petrol car. As with most things, the better quality, the better the sound/reliability etc. so splash out and get a good quality twin piston D/V.
However, as Turbo Diesels dont create the same vacuum in the inlet manifold that petrol cars do, so u have to use a different set up. As Kris says, there is no "off-the-shelf" kits, but there are few people that put kits together themselves. The kits comprise of:
*Air stopping Solenoid
*Microswitch
*T piece (which will be piped into the brake vacuum line)
*Approapriate wiring etc
People like allardturbosport.co.uk sell the kit, but its an absolutely shite dump valve. Very quiet and prone to releasing boost over 17PSi.
The best one i've seen is the one i have. thedervdoctor.co.uk will fit and supply a collins performance D/V for a nice price. He's a derv expert. Definately worth visiting the site.
Matt
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dantheman
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Registered: 8th Oct 03
Location: Alford, Lincolnshire
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ok mate thanks alot mattyb
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MattyB
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Registered: 13th Nov 01
Location: 118.5bhp :D
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no probs. ur prob get some ppl comin into this thread giving it large bout D/V's on TD's........but its usually all good fun so ignore em!
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Pickup
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Registered: 25th Nov 03
Location: Newcastle
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point is ... turbo diesels run a lower boost than petrol cars, so in turn tend not to dump*. But, depends on what car it is eg : Escort 1.8 TD running lower boost than 306 DTurbo, so as standard, 306 will dump, escort wont. Best advice I would give is chip your car. this will run ur car at a higher boost, thus increasing the chance of dumping.
[Edited on 28-02-2004 by Pickup]
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MattyB
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Registered: 13th Nov 01
Location: 118.5bhp :D
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ur very wrong "pick up"
all turbo diesels run enough boost as stanard. Many run alot higher boost than petrol turbo cars.
As standard, a 306 dturbo runs 1 bar. The 1.8td ford block runs around 0.8 bar. Both wil dump boost, pretty loudly.
there is also no "chance" involved with a properly fitted dump valve. my 306 dumps wheneva i want it too as long as the boost is there. the same wud go for the same d/v on any td.
Matt
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vibrio
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Registered: 28th Feb 01
Location: POAH
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quote:
Originally posted by Pickup
point is ... turbo diesels run a lower boost than petrol cars, so in turn tend not to dump*. But, depends on what car it is eg : Escort 1.8 TD running lower boost than 306 DTurbo, so as standard, 306 will dump, escort wont. Best advice I would give is chip your car. this will run ur car at a higher boost, thus increasing the chance of dumping.
[Edited on 28-02-2004 by Pickup]
erm they don;t you fool 
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vibrio
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Registered: 28th Feb 01
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quote:
Originally posted by dantheman
is there any way of getting a dump valve from a petrol car to fit on a turbo diesel. will one from a r5 gt go on an astra 1.7td???
yes but consider why spent circa £200 just to make your car sneeze when you change gear. also fitting an atmos valve will remove boost from the inlet system increasing lag.
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bubble
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Registered: 24th Jan 04
Location: Darwin, NT Australia.
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i just been out in me new 1.3 diesel corsa with trade plates on and when u come off throttle then you can hear it dumping dead loud!!!
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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 Pickup
point is ... turbo diesels run a lower boost than petrol cars, so in turn tend not to dump*. But, depends on what car it is eg : Escort 1.8 TD running lower boost than 306 DTurbo, so as standard, 306 will dump, escort wont. Best advice I would give is chip your car. this will run ur car at a higher boost, thus increasing the chance of dumping.
[Edited on 28-02-2004 by Pickup]
i think you have your head in the clouds, if anything td's run higher boost. some petrol turbos only run 0.4 bar.
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Pickup
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Registered: 25th Nov 03
Location: Newcastle
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soz my apologies. i was thinking along completely the wrong lines. my fault and completely take it im wrong. sorry matt, vibrio etc etc
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