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WHAT DUMP VALVE?

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Old 27 November 2012, 05:08 PM
  #31  
Orangio
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lol
Old 27 November 2012, 05:22 PM
  #32  
urban
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Originally Posted by craigwrx277
There ain't as that just causes compressor surge/stall which makes a noise but that noise is obviously not chavvy for some reason!? But I like that noise haha
Compressor surge can cause damage depending on what turbo you have
Old 27 November 2012, 05:23 PM
  #33  
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Can you fit the standard dv to a fmic and will it take 450bhp??? I'm currently dv less on a M.D. 321t
Old 27 November 2012, 05:46 PM
  #34  
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Yes, and yes.

Mine runs a recirculating d/v as fitted to cars 97-98 on a Hybrid GT2 FMIC.
It fits to a short pipe off the main cold pipe leading to the inlet/throttle.

Although I will admit to having changed it for a Forge one years ago, on the advice of Bob Rawle, it's still recirculating type as they have no chance of messing with the fuelling.

I COULD have gone VTA three years ago when the engine was rebuilt, as I run MAF-less, but was advised not to by none other than Harvey himself.
Old 27 November 2012, 05:47 PM
  #35  
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Originally Posted by urban
Compressor surge can cause damage depending on what turbo you have
Yes indeed the ihi series of turbo's don't like dvless but the td range of turbos are alright with it. As for any other im clueless
Old 27 November 2012, 07:18 PM
  #36  
craigyp
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Sure the md series are fine
Old 27 November 2012, 07:59 PM
  #37  
scoobwrx94import
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some scoobys just dont like dump valves ive fitted a few to my old scoobys and all of them eventually started running like ****e and each time was dump valve that was the cause a brand new absolute gash baileys and a forge and collins one so now just dont run one at all but its gettin mapped this way
Old 27 November 2012, 08:47 PM
  #38  
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Originally Posted by craigyp
Can you fit the standard dv to a fmic and will it take 450bhp??? I'm currently dv less on a M.D. 321t
I would never trust a standard DV at that level. Mine was bleeding boost back into the inlet tract at 1.6 bar, running 380hp when it should have been producing another 40hp. There's to much blind faith in the standard item, ok at lower levels but much better to invest in a good aftermarket re-circulating dv such as a Turbosmart or Forge when running higher boost levels.
Trev
Old 27 November 2012, 11:51 PM
  #39  
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Is this still going (again)?

As somoeone once said in a thread on here if you want a noisy VTA DV then save yourself the money and time by simply opening the window and every time you change gear shout 'Look at me, I'm a c**t"
Old 27 November 2012, 11:58 PM
  #40  
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My dump valve added an estimated 40bhp when fitted!















Old 28 November 2012, 03:08 PM
  #41  
craigyp
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I'll keep mine d/v less then
Old 28 November 2012, 03:18 PM
  #42  
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Your choice.

Your turbo may be able to take it, but it's not kind to the turbo. Always bear in mind that a rally car engine is removed, stripped and rebuilt after every rally...
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