What exactly is "Piston Slap?"
のんびり～(´ε｀)
Joined: Sep 2000
Posts: 2,314
Likes: 1
From: San Jo, Cali
I believe that happens with aftermarket forged pistons that may run a larger piston to wall clearance than stock. They don't expand as quickly as stock pistons, so they tend to be noisy on startup.
Flaccid Member
Joined: Jul 2002
Posts: 571
Likes: 0
From: Seattle
pistons slap is anytime the pistons do not properly fit the bores and cause extreme sidewall contact.
the forged pistons situation is commonly referred to as "piston rattle" since the tolerances are spot on, but forged aluminum doesnt expand as quickly as cast aluminum.
the forged pistons situation is commonly referred to as "piston rattle" since the tolerances are spot on, but forged aluminum doesnt expand as quickly as cast aluminum.