Will i have to run a dump valve?

1. white_vtr Frequent Poster Joined: May 2009 newcastle Posts: 921 Bianca gti on bodys Black evo 9

   #1 13th May 2012, 12:43

   In the middle of building my vts turbo, just wondering if i have to run a dump valve, or will the wastegate built into turbo be good enough?
2. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #2 13th May 2012, 13:06

   You don't "have" to run one,
   
   But there is much debate about not running one causing damage to the turbo over time,
   
   There's also great debate about whether or not it reduces your spool times due to turbo stall
   
   As when you close the throttle if there's no where for the air to go(no dump valve) it tries to force its way back past the turbine blades
3. white_vtr Frequent Poster Joined: May 2009 newcastle Posts: 921 Bianca gti on bodys Black evo 9

   #3 13th May 2012, 13:12

   Quote:

   Originally Posted by blackie_2k5 You don't "have" to run one, But there is much debate about not running one causing damage to the turbo over time, There's also great debate about whether or not it reduces your spool times due to turbo stall As when you close the throttle if there's no where for the air to go(no dump valve) it tries to force its way back past the turbine blades

   Hmmm a just dont want the dump noise for reasons you know about haha. Maybe a recirculating dump would be alot quieter?
4. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #4 13th May 2012, 13:25

   If you didn't have the dump you'll still get the turbo stall/chatter noise anyway lol
   
   Recirc will be quieter... I wouldn't worry too much about it mate tbh
5. LSOfreak Saxperience Addict Joined: Jan 2008 west london Posts: 13810

   #5 13th May 2012, 13:57

   why would you not want that noise lol?

   1 user thanked this post: white_vtr
6. white_vtr Frequent Poster Joined: May 2009 newcastle Posts: 921 Bianca gti on bodys Black evo 9

   #6 13th May 2012, 14:01

   Quote:

   Originally Posted by LSOfreak why would you not want that noise lol?

   Insurence purposes :/
7. dannygti Saxperience Post Whore Joined: Feb 2006 dudley United Kingdom (England) Posts: 6790 106 gti/ SEAT LCR

   #7 13th May 2012, 14:04

   Didnt think insurers fitted Sound recorders to your car?

   1 user thanked this post: white_vtr
8. LSOfreak Saxperience Addict Joined: Jan 2008 west london Posts: 13810

   #8 13th May 2012, 14:14

   Aslong as they no there's a turbo there, i doubt they'll start rooting through your engine for anything undeclared tbh
9. white_vtr Frequent Poster Joined: May 2009 newcastle Posts: 921 Bianca gti on bodys Black evo 9

   #9 13th May 2012, 14:29

   Yeah there not really gonna know about the turbo. Only getting used on a weekend so i refuse to pay another £1k to declare it.
10. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

    #10 13th May 2012, 14:35

    Didnt think you would get insurance on a saxo turbo lol, i wonder what it would be for a 17 year old
11. LSOfreak Saxperience Addict Joined: Jan 2008 west london Posts: 13810

    #11 13th May 2012, 15:04

    i doubt theyd really care much about an undeclared dump valve if youve got an undeclared turbo then lol
    
    i found admiral would insure me on a turbo vtr, but not a vtr with a vts conversion
12. e8_pqck Saxperience Forum Bum Joined: Aug 2010 Midlands Posts: 2530 AX 16v Turbo

    #12 13th May 2012, 15:15

    I don't think its very smart to announce your intentions on a public forum. There's insurers on here and they have already admitted to searching peoples posts for undecleared mods.
    
    "give us your membership name for 10% off" Yeh right.
    
    Recirculating into an open cone will still make the noise.
13. ThrushMotorsport Established Member Joined: Jan 2011 Aberdeen Posts: 1092 Turbo Saxo vtr, 2010 Octavia VRS TSI, mk3 Ibiza cu

    #13 13th May 2012, 15:19

    A DV will more than likely not be as loud as turbo chatter, turbo chatter sounds mad though..
14. devilsadvocate Saxperience Post Whore Joined: Dec 2006 Maidstone Posts: 8210 Golf TDI

    #14 13th May 2012, 15:32

    Quote:

    Originally Posted by white_vtr Yeah there not really gonna know about the turbo. Only getting used on a weekend so i refuse to pay another £1k to declare it.

    Big risk mate, only takes a knowledgable police officer to pull you over on a Saturday to check your car over.
    
    The extra £1000 is based on the extra risk you pose as an inexperienced driver with a turbocharged car, perfectly justified in my opinion.
    
    Just my 2p.
    
    I would avoid skyinsurance for obvious reasons.
15. RustySkull Saxperience Post Whore Joined: Oct 2009 Basildon And Corringham, Essex Posts: 5179 MK1 Focus RS, Discovery TD5, Renault Trafic 2.0

    #15 13th May 2012, 15:43

    Well, you do really have to run a dump valve, because without one your Turbo will be under great strain and pressure.
16. e8_pqck Saxperience Forum Bum Joined: Aug 2010 Midlands Posts: 2530 AX 16v Turbo

    #16 13th May 2012, 15:54

    Quote:

    Originally Posted by Bikekid450 Well, you do really have to run a dump valve, because without one your Turbo will be under great strain and pressure.

    If I was you i'd go and read a few discussions on the subject then, armed with your new knowledge, put them to rights down at the red lion. You'll feel like Stephen Hawkins.

    1 user thanked this post: KieranHopkins
17. Gareth_R Established Member Joined: Mar 2010 Basildon, Essex Posts: 1042 Citroen AX VTS

    #17 13th May 2012, 16:00

    When I renewed last year and added the turbo it didn't make much difference to the price tbh
18. e8_pqck Saxperience Forum Bum Joined: Aug 2010 Midlands Posts: 2530 AX 16v Turbo

    #18 13th May 2012, 16:04

    Quote:

    Originally Posted by Gareth_R When I renewed last year and added the turbo it didn't make much difference to the price tbh

    Maybe they knew it wouldn't get off the drive.
19. RustySkull Saxperience Post Whore Joined: Oct 2009 Basildon And Corringham, Essex Posts: 5179 MK1 Focus RS, Discovery TD5, Renault Trafic 2.0

    #19 13th May 2012, 16:10

    Quote:

    Originally Posted by e8_pqck If I was you i'd go and read a few discussions on the subject then, armed with your new knowledge, put them to rights down at the red lion. You'll feel like Stephen Hawkins.

    Huh? Lol.
    
    I run a DV on my RS but it only dumps a little, the rest goes through the Turbo.
    
    This puts pressure on the Turbo and will wear it out faster, but chatter sounds great
20. wicked-vtr Saxperience Forum Bum Joined: Jan 2009 Surrey Posts: 2608 200sx s14a mark 1 vts

    #20 13th May 2012, 16:11

    Many people run no dump valve for turbo chatter, as said some say it harms the tubby some say it doesn't. If you want to keep it subtle get a recirc, there near on silent from my experience.
    
    Also the wastegate built into the turbo and the dump valve are for different jobs.
21. white_vtr Frequent Poster Joined: May 2009 newcastle Posts: 921 Bianca gti on bodys Black evo 9

    #21 13th May 2012, 16:19

    Cheers guys. Il try a recirc valve, and im paying 1300 on my gti, il give quoting a turbo up but if its rediculouse il run the risk
22. Gareth_R Established Member Joined: Mar 2010 Basildon, Essex Posts: 1042 Citroen AX VTS

    #22 13th May 2012, 17:20

    Quote:

    Originally Posted by e8_pqck Maybe they knew it wouldn't get off the drive.

    Drove it the other day
23. LSOfreak Saxperience Addict Joined: Jan 2008 west london Posts: 13810

    #23 13th May 2012, 18:25

    Quote:

    Originally Posted by white_vtr Cheers guys. Il try a recirc valve, and im paying 1300 on my gti, il give quoting a turbo up but if its rediculouse il run the risk

    i know someone with a turbo'd fiesta, and he told his insurance that its got a modified exhaust system, modified induction and has been chipped.
    
    and to be fair to him, hes not exactly lieing lol

    1 user thanked this post: white_vtr
24. white_vtr Frequent Poster Joined: May 2009 newcastle Posts: 921 Bianca gti on bodys Black evo 9

    #24 13th May 2012, 23:04

    Quote:

    Originally Posted by LSOfreak i know someone with a turbo'd fiesta, and he told his insurance that its got a modified exhaust system, modified induction and has been chipped. and to be fair to him, hes not exactly lieing lol

    Good thinking
25. KieranHopkins Infrequent Poster Joined: Sep 2010 Hemel Hempstead Posts: 226 MK1 Saxo VTR Amazon Green Mk2 Saxo VTS Black

    #25 14th May 2012, 00:50

    Don't run a dump valve! Turbo chatter is so good.
26. user_56440 Infrequent Poster Joined: Dec 2011 Bingley, West Yorkshire Posts: 190 GTI-6, Icelandic VTS

    #26 14th May 2012, 00:58

    Quote:

    Originally Posted by Bikekid450 Huh? Lol. I run a DV on my RS but it only dumps a little, the rest goes through the Turbo. This puts pressure on the Turbo and will wear it out faster, but chatter sounds great

    Well try a weaker spring...
27. D4MJT Saxperience Forum Bum Joined: Mar 2009 Morpeth Posts: 2539 BMW 116d Regional Toner Sales Edition

    #27 18th May 2012, 10:15

    lol @ being concerned about the noise of a dump valve, then bolting a big turbo to the exhaust manifold, which is the first thing you see when you open the bonnet!
    
    Effort!
28. MuZiZZle Saxperience Post Whore Joined: Jul 2011 Newcastle upon Tyne Posts: 7779 Phase 2 VTS , E61 M5

    #28 19th May 2012, 17:19

    Quote:

    Originally Posted by D4MJT lol @ being concerned about the noise of a dump valve, then bolting a big turbo to the exhaust manifold, which is the first thing you see when you open the bonnet! Effort!

    He could wrap the ECU cover in hardcore jazz mags, the hairy gash euro porn would immediately draw attention once the bonnet was opened!
    
    Sorted!

    2 users thanked this post: blackie_2k5, white_vtr
29. RustySkull Saxperience Post Whore Joined: Oct 2009 Basildon And Corringham, Essex Posts: 5179 MK1 Focus RS, Discovery TD5, Renault Trafic 2.0

    #29 19th May 2012, 17:28

    Quote:

    Originally Posted by Loz2212 Well try a weaker spring...

    I use that spring for the reason I said lol.
30. white_vtr Frequent Poster Joined: May 2009 newcastle Posts: 921 Bianca gti on bodys Black evo 9

    #30 19th May 2012, 18:00

    I think iv just wet myself at the porno mag idea lmao hahaha
    And in all my time of driving iv never had the bonnet popped