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Zaspen

What is this engine part???

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I have my engine apart to replace the head gasket and timing cover gasket and I noticed today a small pin on the bench.  I'm not positive it is from the engine but I have never seen it before.  On the bench I have had the oil pump, head, timing cover, thermostat housing and the chain tensioner.  It doesn't appear to have an oily film on it but It could have been cleaned while I have been cleaning parts and scraping gaskets.  It has a black coating on it and has one small area that shows wear.  Any thoughts?20190429_205938.jpg

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It looks like it is metal - a roll pin to be more specific. The bottom of the distributor shaft on a 240 would have one. The small gap along it provides a press fit - so not likely it fell out. I can't recall where another one would be located on the parts you have removed. You don't indicate the year or engine you car has but I believe the ZX distributor has a plastic collar at the bottom where the pin is located. Perhaps the plastic broke and the pin fell out. Just a guess, I'm afraid.

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Both good possibilities.  Seems like both of those are longer than a dime's diameter though.  Not sure.  Need a better picture and a better description.   Metal, plastic, solid, rolled...

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Its a 72 240Z.  Its solid metal and sticks to a magnet.  It appears to have a black oxide finish with some wear down to the base metal.  It isn't a roll pin or a plastic rivet.  Picture attached at a different angle. I saw nothing on any of the parts diagrams that this could be but like I said it just appeared on my workbench.  Thanks!

20190430_054437.jpg

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Your second picture indicates to me that it isn't a piece off of your Z. Perhaps the tool fairy had something to do with its appearance - hence the dime.

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Its not the roll pin from the bottom of the distributor.  Thanks for everyone's input.  I'm feeling pretty confident its not from the motor.  I'll take my dime and leave!

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I often stare at the ceiling as I lie awake and think of all the money I throw at the car!  

 

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I was taught that if one foot on the floor didn't stop it, you should put two feet on the floor and get up. You aren't going to fall asleep anyway.    ROFL

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Beer.... The cause of, and solution to all of life's problems. 

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7 minutes ago, jonathanrussell said:

Needle bearing from a u-joint cap?

That looks/sounds about right.  I knew that I had seen something similar in the past.  Too bad I took my box of old u-joints to the recycle yard, I'd replicate the picture, to see.

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That was a thought I had but the needle bearings are a little longer and are chrome (or rust) finish not the black oxide.  Everything is back together and working so its all good.  Thanks!

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