Piston slap. Class action lawsuit.
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Race Director
Joined: Jan 2002
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From: No Where USA
Piston slap. Class action lawsuit.
Has anyone heard of a class action suit going on now on the early c5's with this problem.
My car has it on startup. I've had the car for 9 years and it has never changed. And it goes away after it is warmed up. I don't worry about it because I know what it is. But I am trying to sell the car and it is hard to explain to someone that doesn't know. I tell them to just read what is on the internet. If you are buying this type of car anyway you should do your homework.
My car has it on startup. I've had the car for 9 years and it has never changed. And it goes away after it is warmed up. I don't worry about it because I know what it is. But I am trying to sell the car and it is hard to explain to someone that doesn't know. I tell them to just read what is on the internet. If you are buying this type of car anyway you should do your homework.
Last edited by 540 vette; Mar 11, 2012 at 06:54 PM.
Thread Starter
Race Director
Joined: Jan 2002
Posts: 11,615
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From: No Where USA
Tech Contributor
Joined: Oct 1999
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From: Charlotte, NC (formerly Endicott, NY)
Has anyone heard of a class action suit going on now on the early c5's with this problem.
My car has it on startup. I've had the car for 9 years and it has never changed. And it goes away after it is warmed up. I don't worry about it because I know what it is. But I am trying to sell the car and it is hard to explain to someone that doesn't know. I tell them to just read what is on the internet. If you are buying this type of car anyway you should do your homework.
My car has it on startup. I've had the car for 9 years and it has never changed. And it goes away after it is warmed up. I don't worry about it because I know what it is. But I am trying to sell the car and it is hard to explain to someone that doesn't know. I tell them to just read what is on the internet. If you are buying this type of car anyway you should do your homework.
Bill
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Team Owner
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From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
I too don't think it will ever happen - but it is what it is and there might even be a statute of limitations on it too - 
Had it on mine but since doing a forged set-up it is all solved
Thanks,Matt
Had it on mine but since doing a forged set-up it is all solved
Thanks,Matt
Thread Starter
Race Director
Joined: Jan 2002
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From: No Where USA
The reason I am asking is that a potential buyer of my car asked a chevy tech friend of his if the slap was a problem. The guy said that the 99's were the worst. I told him to do a search on it. I think he is going to use this to drive the price down. At the price I am selling it at it isn't going down much.
Pro
Joined: Sep 2008
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From: Tustin California
Mine has a slight sound for 2 minutes or so. When warmed up it makes no noise. Been that way for 12 years. I used to worry a little after going supercharged but I just let it warm up before boost. Hey Matt is your ride back together? Didn't see a post on it. Rod
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From: No Where USA
Team Owner
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From: Raleigh / Rolesville NC
Piston slap is common with just about all SBC engines. No big deal.
just warm the engine up a bit. use 10-w30 oil, or put an accu-sump to prelub the block. But that may be going to far.
just warm the engine up a bit. use 10-w30 oil, or put an accu-sump to prelub the block. But that may be going to far.
Tech Contributor
Joined: Dec 2006
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From: Van Buren Arkansas
Wounded Warrior Escort '11
The reason I am asking is that a potential buyer of my car asked a chevy tech friend of his if the slap was a problem. The guy said that the 99's were the worst. I told him to do a search on it. I think he is going to use this to drive the price down. At the price I am selling it at it isn't going down much.
Tech Contributor
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From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
Heavier oil will do next to nothing to quiet down piston slap, as you have seen.
There is no pressurized lubrication, at the base of the pistons, where the slapping occurs. The only lubrication in that area, is just a very small amount of oil splash.
There is no pressurized lubrication, at the base of the pistons, where the slapping occurs. The only lubrication in that area, is just a very small amount of oil splash.
