<VV> Possible Piston Slap

Jay Maechtlen jaysplace at laserpubs.com
Sun Nov 3 00:00:58 EDT 2019

On 10/31/2019 11:11 AM, Michael Mauro via VirtualVairs wrote:
> I have a freshly rebuilt 110 in my 67 Coupe. Pistons are forged. I have a moderate slapping or rattling sound on cold startup; after warm-up, the noise goes completely away. I'm thinking piston slap... opinions?Thanks, Mike Mauro
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I always heard that since forged pistons need more cold clearance than 
stock-style cast pistons, they are more prone to 'talk' a bit when cold.

As they warm up, they expand out to proper running clearance, and quiet 

If a forged piston is quiet when cold, it is probably on the ragged edge 
of being too tight?

Jay Maechtlen
'61 2-dr modified w/fiberglass skin,
transverse 3.8 Buick V6 TH440T4 trans

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