Half-bred

iTrader: (1)

I built my 370ci and I have stock crank and stock rods with Mahle pistons the question I have is does anyone else have piston slap? It is noticeable at start up but quiets down once it warms up I was told it is piston slap but it drives me nuts to hear it every time I start the truck up, Is this common? I thought it was in my tranny but it is in the motor.

stock48

iTrader: (16)

Just wait till it gets a some more miles on it lol Those pistons with a little clearance are just loud for some reason even in the 4032 alloy. They seem to hold up to some abuse and last a long time tho. Had them in my first 370 and it was same way.

smokeshow

iTrader: (16)

And they're still that way

Half-bred

iTrader: (1)

So I guess it is common to have the piston slap.

TXSZ66AVLANCHE

iTrader: (7)

Do the pistons have coated skirts?

02 BLK WS6

iTrader: (11)

As long as it goes away once warm and you wait to beat on it til it's warmed up, you'll be fine.

Half-bred

iTrader: (1)

Yes the pistons are coated.

kbracing96

iTrader: (26)

Yep, Mahle pistons and rattles like hell when it starts cold. Goes away after a few minutes. been that way since I put the motor in 55k miles ago,

Half-bred

iTrader: (1)

Ok Thanks

oakley6575

iTrader: (5)

Damn that would drive me crazy too