ztheusa

You can do the same thing by dropping two tablespoons of oatmeal in your oil.

AU N EGL

Only cure is a accu-sump or a dry sump oiling system and prelubing the block prior to cranking it over.

No piston slap here. accu-sump oil cooler combo and 15-w50 oil

madmatt9471

Got a link to this stuff?

Thanks,Matt

tail_lights

My EX-tuner (Henderson Performance Technologies, HPT, New Braunfels, TX) told me I had piston slap at 5k rpms and higher when WOT. The car would start breaking up bad. Turns out she was outta fuel Not sure how it made it on those pulls but I made my own restrictor out of duct tape and it could pull clear to rev limiter. My current tuner got it on their dyno and realized the issue, installed a Racetronix fuel system and VIOLA!!! "Piston slap" was gone

SCM_Crash

Yeah... It's funny when I pull up in parking lots (usually after driving on the freeway for some time) some people mention they could hear the piston slap. I ask them how that's possible since the motor is hot. Some people don't know anything about motors or what piston slap is and pull random comments out of their butts.

dklowrider

any time the motor makes noises it's piston slap.

paint-tech

My 01 and 02 are both quiet on bottom and not even a peep out of the valve train. I use amsiol oil and fiteration.

4SFED Z

I agree. Louder exhaust, stereo, and cam makes it all go away

Piston slap is normal. as others have said, goes away when car is warmed up

Chevy-SS

Huh? What are you talking about? Piston slap is absolutely, positively, most assuredly, 100% possible with a hot motor.


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Mike Mercury

summary of the OP's initial post:

"Mis-diagnosed piston slap noise - corrected through other means"

and it may be true.

dklowrider

if you're speaking in general terms, yes piston slap is entirely possible with a hot motor. if you're talking about my ls1 car that has piston slap noise when cold, then it goes away when the motor warms up, and someone says "i hear the piston slap noise", then no.
i think the latter is what scm was talking about.

note, i said i think.

00Corvette

Ditto

ColeTrain'sC5

ZMax LOL what a gimmick

angman5

Cam headers and a Borla cat back will fix that slap noise I have not heard mine in years

SCM_Crash

You know what piston slap is, right? If your motor is hot and the metals have expanded, you may have *some* piston slap, but it won't be enough to hear if any at all. With the right lubrication, you shouldn't have any piston slap while the motor is at it's operating temperatures.

Atok

But Carol Shelby uses it in all his cars. You mean it's not as good as he says?

moserbe

He's just trying to make more money for his younger wife.

Chevy-SS

I think I said earlier - I believe most everyone on this forum knows what 'piston slap' is. It's a very simple concept to grasp, i.e., the piston being slightly loose in the bore.

The engine could be red hot and you could still have piston slap, IF there were excessive clearances between the piston skirt and cylinder wall.

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ColeTrain'sC5

Yeah ZMax is about as good of stuff as the Intake Tornado...

road dog

I have a 98 and never heard of the famous piston slap issue. what years have this problem I've heard that the 2001 have oil consumtion problems but never heard of piston slap. I've never heard piston slap on my vette never