Piston & connecting rods

MechRick

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is there any reason I can't install the press fit pins at home?
Why yes, you can. I use two propane torches facing each other, an infrared thermometer and gloves. It's a good idea to build an adjustable pin stop so when you slide the pin in it locates quickly. You only have about two seconds before it grabs. 430-460 degrees on the small end is what I shoot for.
-It's nerve-wracking, because if the rod grabs the pin in the wrong location you'll have to build a fixture to support the piston so you can press the pin into location without breaking it.
-I built mine to use the slots on a mill table, but a drill press table would work as well.





-i realize you don't need to press pins now, but thought I would share the information, considering the title of the thread...
 
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THE FRENCHTOWN FLYER

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nice
Do you insulate the top of the piston from the mill table to keep the heat in?
Do you press the pin by hand or use a use a ram?
Mentally filed away for future use.

Stick-on temp tabs might be useful to determine piston temperature.

EDIT: I meant to say ..."to determine rod temperature".
 
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MechRick

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I heat the small end of the rod to 450ish degrees, then hold the rod small end between the piston pin bosses and slip the pin in. I honed the small end of a junk rod for a slip fit on the pin to check setup and adjust the pin stop. You can't see it in the picture, but there's a quarter inch oil pump driveshaft clamped in the mill chuck that's inserted in a hole in the strap steel on the mill table. I run the table to the right to preload the strap steel against the top ring land. That holds the piston in place.
 
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