Re: Washers under head nuts?

Posted by PackardV8 On 2015/8/27 20:11:08

Per chance, if u r running an Aluminum head then check the parts manual to determine if it takes a different washer... Probably much more thick than a CI head.

In any case Owen gives good advice on the aircraft HEAD BOLT type washer (not just any Aero washer).

Do not use a standard hardware store washer unless it is hardened to some degree t hat is harder than a standard part washer.

The hardened wqssher tends to act as a locking device to keep the head bolt or stud nut from loosening.