Dump Valves?

[Mrsmopp]

Hmmm...why would i want to fit a dump valve when the supplier of the Turbo states that one is not required?

Iain

Can you not just explain the reasons why as you have done over on VOC rather than leading people up the garden path?

x

[Goof]

Hmmm...why would i want to fit a dump valve when the supplier of the Turbo states that one is not required?

Iain

Is this usual not to have a DV on a turbo ~ I mean generally, not just on Volvos.
I only ask because elsewhere it seems that people fit a DV to an engine that doesn't have any sort of DV. So to me it's not un-common not to have a DV.

Or have I got it all wrong!?

Suppose if your supplier/manufacturer says you don't need anything, then that's down to them - they only designed it and gave a warranty!

[Goof]

Can you not just explain the reasons why as you have done over on VOC rather than leading people up the garden path?

x

Link?

[JUDGENINJA]

THen I suppose we've answered our own questions....a DV in not required for a turbo to work fine. All a DV does is try to make the turbo last longer. Whether you want the soundor not. And you can buy aftermarket recirculating DV's

As a hybrid turbo is fitted, it has probably been aqccepted that it will get abuse therefore it probably doesn't have as longer lifespan. The Volvo design policy was/is to develop their cars to last 25 years..So sensibly they fitted a DV...even if it is not a good one.

I still say fit one...

[elliot]

Is this usual not to have a DV on a turbo ~ I mean generally, not just on Volvos.
I only ask because elsewhere it seems that people fit a DV to an engine that doesn't have any sort of DV. So to me it's not un-common not to have a DV.

Or have I got it all wrong!?

Suppose if your supplier/manufacturer says you don't need anything, then that's down to them - they only designed it and gave a warranty!

Its is normal is for turbos with cut back baldes and ball bearing cores.The TT turbo has cut back blades but not a ball bearing core it has a 360 thrust bearing just like the 19t has.If it was mine i would for sure put a dump valve of sorts on it, just relives alot of stress.If you still want the noise still run a stiff spring in the dump valve so it does'nt open at lower boost levels.Just my thoughts,and dont forget how TT make a living,by rebuilding turbos!

[Green T5R]

Can you not just explain the reasons why as you have done over on VOC rather than leading people up the garden path?

x

Garden path where? I see no path......lol

I'm just trying to be diplomatic in my replys and not tread on anyones toes by bringing up other suppliers etc.

Regards

Iain

[pzorb]

Let's just leave it as Iain doesn't want a DV as he has been informed by his turbo supplier that he doesn't need one, and that's fair enough. Keep the ovlov!

[Green T5R]

OVLOV Forever.......