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Home > Beginners Tech > No dump valve ?

minimauritius

64 Posts
Member #: 10545
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MAURITIUS

Is it okay to run without a blow of valve on reasonable boost like less than 10 psi ? Don't think the metro had one anyway.
Thanks


Joe C

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12243 Posts
Member #: 565
Carlos Fandango

Burnham-on-Crouch, Essex

yeah eapecially if your on the t3 as they are pretty durable.


On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



minimauritius

64 Posts
Member #: 10545
Advanced Member

MAURITIUS

Would the standard setup be less prone to surge because the butterfly is closer to the turbo comparing to all the piping for an intercooled one?
Are people getting strong noise from their BOV on standard setup ?


Carlzilla

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3673 Posts
Member #: 9300
Post Whore

Quarry Bonk

At 10psi on a small turbo it's noticeable inside the car, but not outside

On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper

On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!!

17.213 @ 71mph, 64bhp n/a (Old Engine)


Paul R

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4016 Posts
Member #: 1757
Back to Fucking Tool status

Swindon

I ran my clio at 0.6 bar no dv for 60k on the same turbo.

Drives
-Ford Focus 163 Estate - Daily
-Rover 100 VVC - Drag/Track project

Searching is all you need on TurboMinis


JT

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2727 Posts
Member #: 637
Post Whore

Hertfordshire

Would it be OK to run no dump valve with a high boost gt17?

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985


Joe C

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12243 Posts
Member #: 565
Carlos Fandango

Burnham-on-Crouch, Essex

I really wouldnt, the gt17 althogh a great turbo, has a pretty thin shaft, and Ive head of them shearing on high boost stuff.

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



JT

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2727 Posts
Member #: 637
Post Whore

Hertfordshire

I've got a cheap ebay universal dv. When I was running 20psi it would dump and flutter at the same time lol. The dv obviously couldn't dump enough at high boost.
I was wondering if I should get anther dv or just do away with it.

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985


Joe C

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12243 Posts
Member #: 565
Carlos Fandango

Burnham-on-Crouch, Essex

is the DV before or after the intercooler?

personaly I dont like these DV's with a ring of smaller holes (6mm?) personally i run a recirc one, but without the recirc connected, i havent checked but i suspect one 1" hole flows better than a bunch of small ones.

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



JT

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2727 Posts
Member #: 637
Post Whore

Hertfordshire

It's fitted on the plenum. It looks like a forge type dv.

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985


JT

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2727 Posts
Member #: 637
Post Whore

Hertfordshire

Like this....

https://rover.ebay.com/rover/0/0/0?mpre=htt...%2F301847628452

My build thread..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=542985


Joe C

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12243 Posts
Member #: 565
Carlos Fandango

Burnham-on-Crouch, Essex

if its a piston one pull it apart and check it all moves freely, the o ring on the piston can swell so they stick, diaghram ones seem more reliable.

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



hazpalmer

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1535 Posts
Member #: 9038
Post Whore

Carlisle, Cumbria

the standard bosch one is quite reliable isn't it? I got one of Dave from the A35 van. I think Colin uses one on his sprite to


Joe C

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12243 Posts
Member #: 565
Carlos Fandango

Burnham-on-Crouch, Essex

the plastic R/angle one? yeah, good bit of kit.

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



D4VE

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2910 Posts
Member #: 10749
Post Whore

lowestoft suffolk

Can ya change spring in it? I have the one described with smaller holes but when it goes back on road it shall have the recirc valve just not plumbed in, like mentioned above

Edited by D4VE on 17th Apr, 2018.

On 24th Oct, 2015 jonny f said:
Nothing gets past Dave lol

NOTHING GETS PAST ME!! *tongue*

1/4 mile 14.7 @ 96mph 12psi boost
Showdown class A 2nd place 18.6 @ 69mph


Joe C

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12243 Posts
Member #: 565
Carlos Fandango

Burnham-on-Crouch, Essex

Ive found that if you havent got the vac pipe on the DV it'll actually open, at about 12-15psi on my one, it needs the boost there to keep it shut.

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/


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