Piston Pin Change

Walline · Post by **Walline** » Thu Dec 02, 2004 10:49 pm

I have a set of tool steel taper wall pins, and I am thinking about using them in a set of pistons I have. My quesion is. . . the pistons are press fit. Both pins measure the same but the lighted pins have no bevel on the ends, will that be a problem. I wonder if it will put pressure on the piston, and cause damage. (cut into it) If so I was thinking about putting a bevel on them. Should I just forget the idea, about using them or go foward. Any thoughts would be great. I am building a "junkyard" motor. (out of junk I have lying around)

THANKS!!

bill jones · Post by **bill jones** » Thu Dec 02, 2004 11:13 pm

-I'd just chamfer and polish the edge that you are pressing and press it in.
-Are you actually pressing the pins in or heating the pin end of the rods?

Walline · Post by **Walline** » Thu Dec 02, 2004 11:19 pm

I was planning on heating the rod end. Thanks for the reply. I was pretty sure it would work, to chamfer the ends a little, but for some reason I was getting a little shy about it.

CNC BLOCKS · Post by **CNC BLOCKS** » Fri Dec 03, 2004 9:08 am

Some times when using tool steel pins in a press fit application that when pressing them out they will gaul on most type stock pins they are chrome pins and are made for that and you shouldn't be pressing on the pistons to put them together and heating up the rods to hang them is the way to go and if there is a sharp edge on the pins a slight radius is fine.