Dump valve

[paulwatkins]

Hi guys,
I own a 1991 Lotus Elan M100 SE. As standard it does not have a dump valve. Would there be any benefits (and what are they) in me installing a recirculating dump valve (Bailey DV30) into the system?

I have heard that it keeps the turbo spooling inbetween gear changes; hence making it quicker to spol up to boost speeds again. And that it relieves the stress on the turbo bearings by releasing the back pressure that builds up.

Any comments and/or advice would be appreciated.

Cheers, Paul

[cara jynwyth]

If you get one off a diesel lorry, it will make a really obtuse whooshing sound which is great, all the old men on PH think they are chavvy but I reckon they sound great, innit

They make a difference. I suppose if you fed the output into the exhaust manifold, you could get an antilag effect and fire out the exhaust which is mentoe as well.

Let's face it, it's all about show, not about go, eh?

[mave]

Depends how hard the compressor is working. Probably not going to do any harm. Without one, when you shut the throttle the compressor is trying to pump against the throttle butterfly so 1) its delivery pressure increases meaning it may stall, and 2) it has to work harder against the back pressure and slows down quickly. A BOV allows the compressor to dischage to inlet or atmosphere, so reduced the back pressure

[Avocet]

cara jynwyth said:

...all the old men on PH think they are chavvy but I reckon they sound great, innit

Don't you mean "wikkid, innit"?

[scruffy]

dump valves - car equivalent of asthma...

[eliot]

cara jynwyth said:

I suppose if you fed the output into the exhaust manifold, you could get an antilag effect and fire out the exhaust which is mentoe as well.

You are kidding right?