Harmonic balancer and valve noise

[Garagegoon]

Ok... Trying to hit two topics on one post. Is there a diffirence between the harmonic balancer on an AC equiped car versus a non AC car.

And... I have a little valve tap goin on when the car warms up.... Is that normal. I have heard others with the same noise. I come from the world of american made iron and am not used to the Z cars yet. Just learning the ins and outs.

[d240zx2]

There is a difference in the harmonic balancer on early Z cars. Not sure about post-73 years.

No, valve clatter is not normal. You need to check/adjust valve lash per the FSM. Having said that, you CAN hear some light valve train noise, but mine sounds the same cold or hot.

Frank

[Garagegoon]

Thanks for the info

[Nissanman]

Apart from having an extra pulley on the crank damper, the ignition timing marks are located in a different place.

Take this into account if you are mix and matching:ermm: