View Poll Results: Does your evo slap?
yes
12
7.84%
no
137
89.54%
only on cold starts
4
2.61%
Voters: 153. You may not vote on this poll
Piston Slap????!!!!!!
#1
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Piston Slap????!!!!!!
My car has mild piston slap. I can hear it even when it is fully warmed up. It is not very loud, but is there nonetheless. Is a little slap normal with the 4g63's? Oh, and please don't participate in the poll if you don't know what piston slap is, or if you have it.
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It means the piston is "slapping" the sides of the cylinder walls. On some vehicles (LS1) the vehicles pistons will slap until fully "warmed" up...they expand with heat.
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Originally posted by SilverEvo8owner
what the hell is piston slap?
what the hell is piston slap?
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#8
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Originally posted by broeli
It isn't piston slap. More than likely it is the lifters. It is normal
It isn't piston slap. More than likely it is the lifters. It is normal
#9
What's the mileage? What kind of break in procedure did you use?
I seriously doubt that it's piston slap. You wouldn't often see that in a japanese (tight tolerences) motor that has a stock bottom end. The lifters are inheritantly noisy even though the design has improved over the years with larger oiling holes.
I seriously doubt that it's piston slap. You wouldn't often see that in a japanese (tight tolerences) motor that has a stock bottom end. The lifters are inheritantly noisy even though the design has improved over the years with larger oiling holes.
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Originally posted by bluevilevo8
It's when the piston "slaps" against the bore because of a short piston skirt, or overbore. In extreme cases it sounds like a power stroke diesel. In my case, it sounds like faint dieseling. This is what my 02 camaro ss sounded like on a cold start. (click on play button) http://pistonslap.com/photos.htm
It's when the piston "slaps" against the bore because of a short piston skirt, or overbore. In extreme cases it sounds like a power stroke diesel. In my case, it sounds like faint dieseling. This is what my 02 camaro ss sounded like on a cold start. (click on play button) http://pistonslap.com/photos.htm
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It's not pronounced, but you can hear a "rattle rattle rattle rattle rattle rattle". This is starting to **** me off. My car has 1000 miles and more problems than I can count.
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Originally posted by SuperchargedGTZ
i know you know what piston slap sounds like, but you dont think it is the lifters do you?
I have really bad lifter clicking during a cold start up.
i know you know what piston slap sounds like, but you dont think it is the lifters do you?
I have really bad lifter clicking during a cold start up.