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-   -   DUMP VALVE ADVICE NEEDED!!! (https://www.scoobynet.com/scoobynet-general-1/969991-dump-valve-advice-needed.html)

legacy_gtb 28 March 2013 09:22 AM

Ive just ebayed a cheap duck caller ..... give me a week and ill have some wicked dump noises ..... and maybe some shotgun damage to the leggy! :-(

tubbytommy 28 March 2013 09:43 AM

if anyone really still wants one i have a forge one that was removed from emmas car a while ago.
pm me if your interested and ill set up a for sale thread in the relevant section.

alcazar 28 March 2013 10:21 AM


Originally Posted by adz556 (Post 11039312)
So I'm intrigued, if a car is mapped with a dump valve fitted then surely it won't cause problems....unless the spring mechanism leaks boost obviously?

AFAIK, it cannot be properly mapped for a VTA valve unless you run MAF-less.

legacy_gtb 28 March 2013 10:54 AM


Originally Posted by tubbytommy (Post 11039348)
if anyone really still wants one i have a forge one that was removed from emmas car a while ago.
pm me if your interested and ill set up a for sale thread in the relevant section.

Tommy .... i presume you mean VTA?

A mate keeps badgering me for my recirc, and as im mafless it makes no difference (other than my new duck caller will only fit on a recirc used as a VTA) to me either way .... can you ping me some pics?

legacy_gtb 28 March 2013 10:57 AM


Originally Posted by alcazar (Post 11039382)
AFAIK, it cannot be properly mapped for a VTA valve unless you run MAF-less.

Theres no real way to map for maf metered air escaping from the system really as far as i know.

And your partly right, but mafless isnt "mapped" for a VTA, more than it just doesnt matter as the inlet right in front of the turbo where the recircs dump to IS essentially atmosphere as nothing has metered the air that got that far.


.... man... im really looking mforward to my duck caller arriveing! its got a little carved duck on it and everything! :cool:

tubbytommy 28 March 2013 10:58 AM

its a forge vta.
ill get some later on today and pm them to you.

its this version (i think but ill check and send pics later)

http://www.ebay.co.uk/itm/FORGE-MOTO...item20a952a627

legacy_gtb 28 March 2013 11:18 AM

:-) .... tis gonna be sooooo rad!

VTA's get 14 year old girls moist .... mines now aimed a bit more at 14 year old girls from norfolk with buck teeth and 6 toes on each foot!

http://www.ebay.co.uk/itm/Carved-Duc...item27cafebf36

MattyB1983 02 April 2013 12:17 PM


Originally Posted by JGlanzaV (Post 11039031)
The hks is a pull shut type mechanism if you get the ssqv. Because it won't leak as the boost pulls it shut.

I run my ssqv at 2.75bar and have no issues with it leaking.

I have an ssqv with a boost controller in line with the vaccuum source and means I get dump on full boost and chatter at low boost. :) best of both worlds, because at 2.75bar I feel without the dump valve I will damage the turbo

I wanna hear more about this 2.75 bar of boost, I reckon you've made a mistake.

legacy_gtb 02 April 2013 01:17 PM

2.75bar isnt unheard of, but people mistaking absolute with relative pressures isnt unheard of either.

Its arrived and fitted!Angled right he sticks his little head out of the bonnet scoop and everything! :-)

Sounds proper BO i tell thee!

Did take it for a test drive, but it sounded riduckulous!

http://www.youtube.com/watch?v=jEsFn...ature=youtu.be

http://i283.photobucket.com/albums/k...psb20bb50c.jpg

Mustoe91 02 April 2013 07:53 PM

I've got a turbo smart bov on my 55plate new age, I posted a bov message on here and I got slated for it and now I can she why it's annoying so its coming off this weekend if mn right in saying I think it will fit your car (correct me if im wrong) if your interested drop me a pm

Sam

belliott69 02 April 2013 11:39 PM


Originally Posted by legacy_gtb (Post 11045453)
2.75bar isnt unheard of, but people mistaking absolute with relative pressures isnt unheard of either.

Its arrived and fitted!Angled right he sticks his little head out of the bonnet scoop and everything! :-)

Sounds proper BO i tell thee!

Did take it for a test drive, but it sounded riduckulous!

http://www.youtube.com/watch?v=jEsFn...ature=youtu.be

http://i283.photobucket.com/albums/k...psb20bb50c.jpg


:lol1::lol1::lol1::lol1::lol1::lol1::lol1: :thumb:

G4rfo 03 April 2013 03:31 PM

Love my hks osssssssshhhhhhhh like it or love it

gw88 04 April 2013 12:08 AM


Originally Posted by legacy_gtb (Post 11045453)
2.75bar isnt unheard of, but people mistaking absolute with relative pressures isnt unheard of either.

Its arrived and fitted!Angled right he sticks his little head out of the bonnet scoop and everything! :-)

Sounds proper BO i tell thee!

Did take it for a test drive, but it sounded riduckulous!

http://www.youtube.com/watch?v=jEsFn...ature=youtu.be

http://i283.photobucket.com/albums/k...psb20bb50c.jpg

nearly fell off my chair when i saw this!!!:lol:

Rab555 04 April 2013 12:26 AM


Originally Posted by legacy_gtb (Post 11045453)
2.75bar isnt unheard of, but people mistaking absolute with relative pressures isnt unheard of either.

Its arrived and fitted!Angled right he sticks his little head out of the bonnet scoop and everything! :-)

Sounds proper BO i tell thee!

Did take it for a test drive, but it sounded riduckulous!

http://www.youtube.com/watch?v=jEsFn...ature=youtu.be

http://i283.photobucket.com/albums/k...psb20bb50c.jpg

:lol: absolutely brilliant :notworthy

jimnco 10 April 2013 10:32 AM

After following this thread I started to wonder just how much difference my98 classic would be if I changed my VTA baileys bov. PLEASE NOTE every classic I've had has always had an VTA bov fitted before I've bought it so I have never driven a standard classic.. sooooo I went and bought an R-SPEC Alloy Dump Valve Recirculating AND Vent to Air BOV Adjustable. First of all I fitted it straight to as an VTA and played around with the strength of the spring. When set soft as soon as I came off boost I got a very big TISHHH. But the revs dropped so low it nearly stall the engine (baileys did the same just not as bad) if I let go of the accelerator but left in gear it was like hitting a wall! very very jerky indeed, Again like the baileys but the baileys was not as bad..sooooo I messed around all yesterday turning it into a recirculation bov allowing the bigger port to blow back into the engine and the smaller port blowing into the atmosphere..........WELL WHAT DID I FIND!!!!! ....... OMG!... its like driving a new car I still get a really deep tish but it comes from the filter side (sound like a horse lol) it stutters, and I only get a tish from the bov when coming of a high boost the car runs better no drops in revs no popping from the exhaust and smells less lean. just all round A HELL OF A LOT BETTER.....LISTEN TO THE EXPERTS. I have no idea what problems may have been caused by having a baileys bov fitted but hopefully very little...A big thanks to URBAN, TUBBYTOMMY, VEERINDER9, MARKFEY & ALCAZAR for there time and advice I am sure you must get sick off ppl re asking the same questions & if i missed your name sorry & thanks too

veerinder9 10 April 2013 10:57 AM


Originally Posted by jimnco (Post 11054084)
After following this thread I started to wonder just how much difference my98 classic would be if I changed my VTA baileys bov. PLEASE NOTE every classic I've had has always had an VTA bov fitted before I've bought it so I have never driven a standard classic.. sooooo I went and bought an R-SPEC Alloy Dump Valve Recirculating AND Vent to Air BOV Adjustable. First of all I fitted it straight to as an VTA and played around with the strength of the spring. When set soft as soon as I came off boost I got a very big TISHHH. But the revs dropped so low it nearly stall the engine (baileys did the same just not as bad) if I let go of the accelerator but left in gear it was like hitting a wall! very very jerky indeed, Again like the baileys but the baileys was not as bad..sooooo I messed around all yesterday turning it into a recirculation bov allowing the bigger port to blow back into the engine and the smaller port blowing into the atmosphere..........WELL WHAT DID I FIND!!!!! ....... OMG!... its like driving a new car I still get a really deep tish but it comes from the filter side (sound like a horse lol) it stutters, and I only get a tish from the bov when coming of a high boost the car runs better no drops in revs no popping from the exhaust and smells less lean. just all round A HELL OF A LOT BETTER.....LISTEN TO THE EXPERTS. I have no idea what problems may have been caused by having a baileys bov fitted but hopefully very little...A big thanks to URBAN, TUBBYTOMMY, VEERINDER9, MARKFEY & ALCAZAR for there time and advice I am sure you must get sick off ppl re asking the same questions & if i missed your name sorry & thanks too


You'r welcome mate, I only like making comments on things ive experiemented and thats what I suggest people to do. :)

jimnco 10 April 2013 11:19 AM

I am still in shock just how much smoother it is and I am pretty sure its comes on to boost more confidently and seems like more power through the gears....The down side to this is now I want to jump into my car every opportunity I can Ive spent £60 in fuel in just under 24 hours... the wife is not happy but I AM!!! :norty: :norty: :norty::lol1:

urban 10 April 2013 01:27 PM

Yes - glad you seen sense (and evidence that it fcuks the car up) in the end.


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