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I worked in aviation for 12 years and I have never see that on any kind of aircraft lol, Now, safety wire.  Thats on nearly ever nut and bolt.  It comes in different thickness and has very high tensile strength

https://www.aircraftspruce.com/catalog/pnpages/05-02687.php?utm_source=google&utm_medium=organic&utm_campaign=shopping&utm_term=05-02687&gQT=1

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1 hour ago, nowak1981 said:

I worked in aviation for 12 years and I have never see that on any kind of aircraft lol, Now, safety wire.  Thats on nearly ever nut and bolt.  It comes in different thickness and has very high tensile strength

Old planes 🙂

The 1st thing you should do is take the valve cover off and drench the cam with oil. You put ATF in the spark plug holes. Once you get all the moving parts oiled up put a socket on the the cam gear and slowly turn it clockwise looking from the radiator. Leave the plugs out and turn it a little everyday. 

Start cleaning stuff. There's a bunch of places spider webs can be a pain. The AFM sweeper arm and the TPS contacts are especially important. Open the air cleaner box and look for acorns and other critter $^!# they hide. 

Take good care of that head if it’s really a MN head . Like said - a compression test would show pretty stout numbers with any combo involving a Maxima head . CC’s are about 39 which should show 180-200 psi compression check . I’ll also say the Maxima head would be about better than anything  you could pit on that engine . But it also would be a challenge for stock EFI to keep up with the compression - not even talking ignition timing issues also . 
 

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