Search Advanced search…. These types of noises are not catastrophic and typically don't mean a big engine problem is imminent. Any thoughts on this? A Is it piston slap, valve train noise or some other problem? Add to Want to watch this again later? The interactive transcript could not be loaded. All I hear is the sweet sound of a blower. I don't rev my engine at all.
Unfortunately, some early LS1's were plagued with excessive cold-start noise traced to 'piston slap'. Piston Slap Explained.
What Is Piston Slap And False Knock
“Piston slap is. Is it piston slap, valve train noise or some other problem? It has developed a clicking engine noise on a cold start. After the car has warmed. Common problem on this vintage was piston slap noise and mine is no .
It has some "cold start knock" - piston slap, that so many recent.
Find More Posts by Don-Vette. Thread Tools. With piston slap, the aluminum piston skirt expands a bit as it heats up, eliminating the excess skirt-to-wall clearance. Inaudible to the human ear, the rocking of a wide-clearance piston in its bore can trigger the knock sensors in an engine that utilizes an ECU programmed to pull timing, boost, or both when detonation is detected.
Video: Piston slap on cold start What Piston Slap Sounds Like
A few of the fins on the bottom of the radiator got damaged a bit, and it leaks.
Piston skirts designed too. I'm getting about PSI oil pressure cold, and around 32 PSI once fully Which leaves me with maybe piston slap, from a clearance issue?
If the engine is around 10 degrees (scan gauge) when I start the car, I'll hear it. It is loud now if I push the car at all when the engine is very cold (like You might have Piston Slap, there's some Internet chatter about.
Edmunds' experts pick their favorite must-have car features The average person owns a vehicle for about six and a half years. In the case of the LS, the shorter piston skirt meant that the angular shift of the piston in the bore was more pronounced than with a longer piston running the same clearance.
There's a lot of b. Q I have a Jeep Grand Cherokee. Poor Man Mods 92, views.
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Piston slap on cold start
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What causes the phenomenon and what can be done to prevent it? Do electric cars make any noise? Find More Posts by tlove Thanks for the input, guys. I hear it only on very cold days
After a minute or less of idling, it goes away completely. I have typical LS piston slap on cold starts. The thing that worries me is the slap noise is noticeable until the C6 gets up to about drgs.
I have had about 15 LS powered vettes and f-bodies sincemost of them had piston slap of varying degree, some were really bad when cold at idle and sounded like a diesel.
JE Pistons. Because Perfect Skirt conforms to the cylinder bore, effective clearances are greatly reduced, stabilizing the piston in relation to the cylinder axis. Thanks for the input. Likes: Quotes in seconds, parts in days.
I'll Have the manifold off soon for a Sniper conversion, so I'll check for a leak then.