Fred_Katz@ci.sf.ca.us wrote:
>
>
> Like Ken the Datster, I've got questions about the timing chain setup. I
> found shims behind the crank sprocket. Just how many shims and washers are
> there supposed to be in the timing setup? Can't tell by looking at the
> Datsun parts illustrations, as it skips this detail.
> Those thin shims locate the crank sprocket. The number/thickness
>wasdetermined by the final machined distance between the face of the thrust
bearing surface and the face of the #1 journal. Once the crank was
machined originally the shims were selected (at Nissan). There really is not
a reason that this dimension should change significantly so just
leave the shims where they are, you will be fine.
> Also read that it's recommended to leave out the gasket behind the
> chain tensioner. Something about the gasket interfering with the oil flow
> into the tensioner. Better to have metal on metal contact, and any oil that
> leaks there actually helps lubricate the chain. Any thoughts on this?
>
Leaving out the gasket would be fine. Using the gasket would be fine.
Just don't goo it up with silicone!
There would not be much of a pressure drop w/o, and after the engine
is running, those chains are slinging oil everywhere!
Bottom line, it is a less than optimal setup, but works just fine
if all the components are in good shape and the chain doesn't have
too much slack. That's the main thing.
Jim Tyler
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