Wrist Pin

[jim_howard_pdx]

Press Fit is actually a misnomer. What we do is put the rod in a furnace and heat up the small end. When they are properly heated, the pin literally slides into place. Then we remove the heat source, and as the rod end cools, it grabs the pin.

Most shops charge about 6.00 per rod to fit the pin.

I prefer pressed pins on street engines. The floating pins require bronze bushings, oiling capacity, and spiro-locks. I have seen spiro-locks fail, and the lunched engines are pretty much a big heavy paper weight.

We use floating pins on race engines where we dissassemble and test a variety of pistons, piston coatings, and the like.

Hope this helps.