A question about Bovs.

[sjc]

On my previous 3R I had fitted a Faulks Performance BOV. The difference before and after was astonishing, in pick up etc, and the noise wasn't too bad either,a bit off a 'pop' type. Today on my M400 I've had fitted a Forge Motorsport one. I can't notice any difference in pick up at all, and the noise is worse than the most chavved chavmoblie at a chavfest, like a flat cymbol (spell?)being hit, frankly horrid. Now am I being a silly bugga and, in fact its me thats the problem because someone is going to tell me that FP one and the Forge are the same( although the Forge looks bigger by memory),and if so would there be a reason that the difference can't be felt on the new car?

[peterguk]

I thought FP BOVs were Forge ones?

[gadgeroonie]

can you adjust the strength of the spring that holds the diaphragm in place ?

i suggest a bit tighter

have you got a pic of it fitted ?

[sjc]

Cheers guys,Gadge I'll certainly try that, maybe I'm not going as mad as I think I am?......no-one answer that bit please!

[ThatPhilBrettGuy]

The standard Forge spring is too weak for any Noble producing more than 0.7bar boost. The next strength up is perfect.

[sjc]

Mine is standard M400,would the standard spring suffice?

[ThatPhilBrettGuy]

sjc said:

Mine is standard M400,would the standard spring suffice?

No, I don't think so. I can't remember the colours off hand but I think they're shipped with green and need yellow which is the next one up.

[ajg31]

I personally didnt notice any difference on my 3R after fitting Noblemods BOV

[EddieC]

I have a Forge valve fitted to my 3R and it has a yellow spring fitted. I suggest that you remove the top of the valve and check what colour spring you have, I think that green is standard.

When you order the valve you have to specify if you require an uprated spring etc.

Eddie

[joust]

Ring Forge and they will send the correct spring for free.

J

[sjc]

Brilliant thanks guys,will be surprised if its the wrong spring as I bought via Noblemods, and I'm sure Graham would have checked.Will look at colour of spring tomorrow, can't do now as no power in the garage due to the bloody spark not turning up again today!

[sjc]

ajg31 said:

I personally didnt notice any difference on my 3R after fitting Noblemods BOV

Might be worth checking yours as there was a real difference when my 3R one was fitted,virtually like a power upgrade.

[F.C.]

I have the same BOV I notice the difference in the higher gears at higher speeds, definatly less turbo stall 4th to 5th and 5th to 6th when changing at high rpm.
F.C.

[snuffy]

Yep, mine came with a green one and it was venting to early. Fitted a yellow one and job's a carot.

[NobleNick]

Somebody tell me what a BOV is please ?

What does it do?

[snuffy]

NobleNick said:

Somebody tell me what a BOV is please ?

What does it do?

BOV - Blow Off Valve, or Dump Valve is another term for it.

It vents excess air pressure on the inlet side instead of the turbo wastegate opening which can cause the turbo to stall when it closes again. And it makes a "per-chuuuu" noise when you change gear.

[EddieC]

Take a look here and scroll down about half way down

http://www.noblemods.co.uk/performance.html

[Ash M400]

joust said:

Ring Forge and they will send the correct spring for free.

J

Do you have a number?

And when can you start work as my PA

[sjc]

just googled and found this 01452 380999, but don't get the last spring eh!

[ajg31]

sjc said:

ajg31 said:

I personally didnt notice any difference on my 3R after fitting Noblemods BOV

Might be worth checking yours as there was a real difference when my 3R one was fitted,virtually like a power upgrade.

I presumed that noble mods would send the right one out. will check when i get the car back