Power Valve Actuator (PVA) Mod

Engines and Engine Systems
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David
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Re: Power Valve Actuator (PVA) Mod

Post by David »

NISMOnator wrote:Thank you David, :salute:

The arm I see on the right? Was that connected to the part that should be cable tied? Just unclip and leave it there? :think:
Yip - remove the small circlip and washer. Disconnect the arm and replace circlip & washer. Turn the butterfly clockwise till closed and cable tie in place. There is not much space so long nose pliers help :thumbup:
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David
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Re: Power Valve Actuator (PVA) Mod

Post by David »

Clem wrote:Right, so if it CLOSES the valve, what's really happening?
My understanding is that when the butterfly closes it actually lengthens your intake duct which in turn provides more bottom end torque and when it is open you will have more top end power :layrubber:
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Re: Power Valve Actuator (PVA) Mod

Post by Clem »

Got it, thanks! Presumably then it would normally be closed anyway at idle and would open wide when overtaking under full throttle at high RPM ? Anyone know what it's normal behaviour would be?
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Re: Power Valve Actuator (PVA) Mod

Post by Oellie »

Does this Mod only apply to the 4.8 ,can I do this mod on the 4.5 ?
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Re: Power Valve Actuator (PVA) Mod

Post by Marino4x4 »

Hi Oellie

Ek het laas nag gekyk, dit lyk my of dit net op die 4.8 enjin is. Daar is nie iets wat soos dit lyk op die 4.5 nie. As iemand meer hiervan weet sal dit gaaf wees as hulle kan help. Dalk PC wat die afgelope paar weke die 4.5 bekyk het en nogmals bekyke het. :biggrin: :biggrin: :lol: :lol:
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Re: Power Valve Actuator (PVA) Mod

Post by Oellie »

Dankie :thumbup:
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Re: Power Valve Actuator (PVA) Mod

Post by Gerrit Loubser »

No, the TB45E does not have any of this fancy variable induction tract mallarky :biggrin: . It is a good honest old fork lift engine :thumbup: .
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Re: Power Valve Actuator (PVA) Mod

Post by Blitzpatrollie »

Hi guys, I'm just about done burning off a full tank of juice on my first patrol, (didn't take long btw) and then wanna do this mod. On the aussie site they say something about a cable that needs to be disconnected. Is this a must, or optional? Don't really like the idea of having a loose cable hanging around in there...
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Re: Power Valve Actuator (PVA) Mod

Post by NISMOnator »

I also dont like the idea of a cable being unplugged and then just hanging in there? Can someone answer this?

Decided my mechanic should rather do the mod. :redface:
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Re: Power Valve Actuator (PVA) Mod

Post by Peter Connan »

Most wiring harnesses have plugs that hang loose, put there for options or systems not fitted to that particular car.

Cable-tie it down somewhere...

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