VTEC transition

[NSXNEV]

Folks-

I noted that before getting my full timing belt/ water pump replaced, I could notice a difference both in engine sound and a slight nudge in the backside when I flew past 6,000 rpm and VTEC. After the service however, I cannot decipher the transition to VTEC, but the car still pulls hard like normal. Should I be concerned?

Thanks in advance-

Nev

 

[wilsonp]

The FAQ doesn't seem to mention troubleshooting VTEC, but there have been other threads.

Basically you should see a drop in oil pressure when you go across the VTEC RPM boundary at 5800 RPM.

 

[Ojas]

Perhaps the timing's off by a tooth on one or more gears. Just a guess.

 

[MarkB]

In my new '03, I notice no, or at least minimal, change in thrust or sound when the VTEC line is crossed. In my old S2K, it was very noticable. My assumption was that the NSX just didn't show a noticable boost. Is this the way it should be?

 

[Ojas]

Is this the way it should be?

Yup, sure is. The torque curve reflects this. This is different that other 4 cylinder VTEC models - the NSX has decent torque out of VTEC.

 

[Larry Bastanza]

Nev,

I saw another thread where you mentioned the t-belt being done at Davis. Well, if Bernie did it there is a .000000000000000000000000000000000001% probability it is off a tooth. He is way too good for that. I think maybe BEFORE the work your car may not have been 100% out of VTEC. Now that is has had the work it is fine throughout the range.

Enjoy!
LarryB

 

[Jackson]

Curious, how does one check too see if the timing belt is off a tooth?

Thank you

 

[nsxtasy]

Curious, how does one check too see if the timing belt is off a tooth?

Take it to Bernie!

 

[sjs]

Take it to Bernie!

Or pull the valve covers off and follow the service manual very carefully. It's quite simple to check but a bit tricky to correct.