The engine you all helped me get started a few weeks ago needed an oil change and this pin seemed to flow out with the old oil. It's very small measuring 0.698 long 0.153 on the squared off end and 0.129 on the domed end. Anyone knows where it came from and should I be worried? Harv
looks like a pin that holds one of the clutch fingers, take the top plate of the hogs head and have a look.
looks like a magneto contact. seems to me you had no magneto, correct?
Those measurements are really small. At first I thought possibly a bendix cover screw but I think those are bigger than that in diameter. Could it be off the mag. post? That would be my guess or just some junk that fell in out of somebody's pocket while working on bands. I would not worry too much at this point, at least it came out with the oil but you don't know what is caught up above the drain without pulling the pan (cotter keys). There is nothing that small in the engine or transmission.
what size are the valve spring keeper pins?
looks brass, is it?
Very soft valve pin. I have known guys so cheep that they would use cut off nails for valve pins.
one guy in our club that builds a lot of motors,uses piano wire after several new pins broke. end of problem
I have been using drill rod.
My first thought was valve keeper pin. Pull the side valve cover and take a look. I'd really wonder how well it would run without it but hey, if your guides are worn bad enough it could be bouncing around in there and actually seating a bit.
Thanks all, I'll pull the valve cover tomorrow and check the valve pins although it doesn't really look like one. It is brass if that makes a difference. I ran the engine after I changed the oil and it runs smooth, but I didn't switch to mag. I'll try that tomorrow also, and check the clutch fingers. I had the wheels off the ground yesterday and checked the operation forward and reverse, everything seemed ok. I hope it's just something the previous owner let fall by accident. Harv.
if its brass, i'm still bettin on the mag post, which means there could still be a steel spring flying around in there. you really shouldnt run it untill you figure it out, lots of damage can be done to things that need the motor to come out to fix. best of luck !
How could it be a valve keeper pin? If the engine was running ok this could not be missing. How could a pin from the valve spring area get into the crankcase. When a pin comes out isn't it always found in the lifter valley somewhere around the springs?
Better bet is a mag post and may have fallen there years ago, no way of really telling.
Being brass and that small, I would think that it was probably dropped in at some time when the inspection cover was off. KGB
or broken magnet screw
Odd that no one seems to recognise it. Makes me come to 2 possibles: 1, it doesn't belong there at all (totally foreign object) or 2, it's only part of something that broke off. By that wear pattern in the middle you'd think it would have been trapped pretty good. Then again whatever it was holding might have broke and it fell out.
After a great deal of research this morning I came across this picture and the pin I have looks very much like the pin on the bottom of the Mag post. I am running a distributor on this engine so the Mag is not connected. Harv
Can't be a valve pin as they are only 7/64" (.109375") diameter. Besides that brass would be too soft for that application.