Ed,
Smog pump. The water pump pulley is a double row on the later cars and the
lower pulley was modified to allow for the change in the routing of the fan
belt.
Sid
>From: "Ed Wilsey" <Kensington_FC@hotmail.com>
>Reply-To: "Ed Wilsey" <Kensington_FC@hotmail.com>
>To: "List" <datsun-roadsters@autox.team.net>
>Subject: Pulley on Crank
>Date: Wed, 8 May 2002 10:31:29 -0700
>
>Morning!
>
>I have a 3 and 5 main block sitting on the floor side by side and I just
>noticed that the pulley is different on each. The 5 main pulley is not
>flat
>but kind of domed putting the belt groove further away from the block.
>What
>changed in the engine compartments that changed the crank pulley design?
>
>Thanks!
>
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