Docsholiday
Member
I've read where others have put off doing some timing work on their motors due to a lack of tool(s) for the job.
Two tools that can be made using two leftover spark plugs are
#1. A piston top dead center pin, and ..
#2 A T.D.C. tool that makes one person piston T.D.C. location simple
Pictures of these tools are attached.
For the T.D.C. piston stop tool...make sure the center pin is a slip fit, as you'll want to be able to move it slightly to find your first stop when rotating first counter-clockwise (CCW). You are best off if there is a timing tape around your Harmonic Balancer (HB). Put a small piece of tape alongside the timing tape and mark where the pointer is at during this first stop of the tool. Then without moving the pin rotate the motor in the opposite direction (CW) clockwise until the piston again comes into contact with the stop. Note that point where the timing pointer is at, on the tape you put down. Now with a sheet of paper lay it down onto the two marks you made and transfer them to the paper. Fold the paper in half and lay it back down over the HB and see if your new centerline on the paper matches that of your pointer at TDC.
Two tools that can be made using two leftover spark plugs are
#1. A piston top dead center pin, and ..
#2 A T.D.C. tool that makes one person piston T.D.C. location simple
Pictures of these tools are attached.
For the T.D.C. piston stop tool...make sure the center pin is a slip fit, as you'll want to be able to move it slightly to find your first stop when rotating first counter-clockwise (CCW). You are best off if there is a timing tape around your Harmonic Balancer (HB). Put a small piece of tape alongside the timing tape and mark where the pointer is at during this first stop of the tool. Then without moving the pin rotate the motor in the opposite direction (CW) clockwise until the piston again comes into contact with the stop. Note that point where the timing pointer is at, on the tape you put down. Now with a sheet of paper lay it down onto the two marks you made and transfer them to the paper. Fold the paper in half and lay it back down over the HB and see if your new centerline on the paper matches that of your pointer at TDC.