VTC's on 94J

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zman240
Posts: 6
Joined: Tue Dec 03, 2002 4:41 am
Car: under the hood
Contact:

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I was told my Valve Timing Controls are bad on my J. Does my car need them to function properly? I was told that you could "re-configure" the wiring from a maxima forum.What do the Infinity pros think of this procedure?


Eswift
Posts: 1194
Joined: Mon Jul 29, 2002 4:48 pm
Car: should be obvious enough

Post

i wouldnt advise it.

sure, you could disconnect the VTCs so that they are always off, the car would probably run fine, but your intake valve opening and closing times will be retarded, and the valve overlap will decrease. this is fine for idling or high speed, but you will feel a significant loss or torque under accel. or WOT.

Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

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Not to mention the noise it makes when VVT is bad, common failure proves the car was not maintained well [oil changes were not frequent enough so the VVT failed]. See it on many abused J30 and older 90-95 300zx.

Eswift
Posts: 1194
Joined: Mon Jul 29, 2002 4:48 pm
Car: should be obvious enough

Post

just curios dennis, whats the noise sound like?

maxnix
Posts: 22627
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

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Eswift wrote:just curios dennis, whats the noise sound like?
Curious about Dennis' curios, are we?

Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

Post

How does one descriibe it? Sometimes kind of like a bad idler pulley except not nearly as loud slipping screech to a quiet screechy moan coming from the VVT ends to no sound at all at the beginning of the failure.

Eswift
Posts: 1194
Joined: Mon Jul 29, 2002 4:48 pm
Car: should be obvious enough

Post

thanks, good to know... i expected it would a high pitched groan...sort of how you described it.


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