L24 Oil Pan Differences - Wondering Why?

[DeesZ]

My daily driver is a 05/72 240Z. My "to be sold" one is a 03/71. The oil pans are different in that the drain plugs are in different positions. My '72 (and later ones that I have had/worked on) all have the drain on the aft of the pan sump. The '71 has it on the right (passenger) side. Other "early" 240Zs I have tinkered with have the same thing. I have garnered from the archives here that there was some kind of a corrective change in design and manufacture due to some design deficiency. Can anyone tell me what the deficiency was or why this change was made?

Thanks!

[AZ-240z]

Check out http://zhome.com/Concourz/. Under engines, there is a short pictoral explanation of the early oil pan, but no definitive information as to vin#s or dates of manufacture. I have been curious, too, as I have a 1/71 series 1, but, from what I have been able to discover, these early pans only came on very early, possibly only on 1969, cars. There was a structural flaw on these, and required dealers to weld a patch panel on to strength an area where vibration cracks were occuring near the drain plug.

Dan

[d240zx2]

AZ-240Z: Got a 404 on the link, but anyway...

My '70 has the drain plug on the passenger side. It's the original pan. No cracks or anything and I drive the h - e - double hockey sticks out of it.:cheeky:

Frank

[AZ-240z]

AZ-240Z: Got a 404 on the link, but anyway...

Frank

Sorry 'bout that. It is not working for me know, either. Maybe if Carl Beck sees this, he can chime in with the correct address.