Piston Slap...
11-10-2008, 04:53 PM
#22
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I'm going to try seafoaming and the 0w-30 Castrol and hope that turns off diesel mode.
You didn't sell it because of the piston slap, did you?
Originally Posted by 1fastzook
I had 2 01 ws6's that made the piston slap noise,the one was so annoying, i had to sell it. =(
11-10-2008, 05:05 PM
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11-10-2008, 08:36 PM
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My '02 slaps pretty good, but it's nothing that you can hear behind closed doors. Or once the engine is fully warm. Not anywhere near bad enough to consider selling it for that reason.
Something must've been seriously wrong with your shortblock. Or you have bionic hearing.
11-10-2008, 08:55 PM
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I agree.
My '02 slaps pretty good, but it's nothing that you can hear behind closed doors. Or once the engine is fully warm. Not anywhere near bad enough to consider selling it for that reason.
Something must've been seriously wrong with your shortblock. Or you have bionic hearing.
My '02 slaps pretty good, but it's nothing that you can hear behind closed doors. Or once the engine is fully warm. Not anywhere near bad enough to consider selling it for that reason.
Something must've been seriously wrong with your shortblock. Or you have bionic hearing.
..It started around 50k miles with the "normal" slap when it was cold and it would go away.Then around 70k it seemed like it got louder and whats weird sometimes it would go away when warm and sometimes it wouldnt.I do agree something was going on in the motor, then i found another on that i drove all of the way up to 100k with just the normal ls1 slap noise.(before i crashed it) 
11-11-2008, 12:57 PM
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http://www.youtube.com/watch?v=AItZvdXF6TI
That's my car. And I can't find the vaccuum/saw noise either.
That's my car. And I can't find the vaccuum/saw noise either.
11-11-2008, 01:09 PM
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on a normal oil change add half a bottle of lucas to the oil change.
it helped but didnt totally eliminate the noise you, we all speak of.
may try some royal purple 10w40
it helped but didnt totally eliminate the noise you, we all speak of.
may try some royal purple 10w40
11-11-2008, 01:10 PM
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http://www.youtube.com/watch?v=AItZvdXF6TI
That's my car. And I can't find the vaccuum/saw noise either.
That's my car. And I can't find the vaccuum/saw noise either.
11-11-2008, 01:45 PM
#33
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I have been thinking about buying a trans am or an ss, but how could GM let two models off the line with pistons that aren't sized properly for the block?
I mean there are areas on a car I expect corners to be cut, but the engine??/
How much is it to "fix" the problem? Does it mean you have to get a re-machine of the block and match the pistons for the correct diameter of each cylinder?
I mean there are areas on a car I expect corners to be cut, but the engine??/
How much is it to "fix" the problem? Does it mean you have to get a re-machine of the block and match the pistons for the correct diameter of each cylinder?
11-11-2008, 02:16 PM
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11-11-2008, 03:32 PM
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http://www.youtube.com/watch?v=AItZvdXF6TI
That's my car. And I can't find the vaccuum/saw noise either.
That's my car. And I can't find the vaccuum/saw noise either.
11-11-2008, 08:51 PM
#36
Haha! The bright side was I guess you got a bada$$ stroker out of it
Vicinity... having a 5.3 for 5+ years with piston slap yours definitely sounds like something else to me. I won't even speculate cause you can't really tell where on the motor the noise is coming from but it doesn't sound like mine at all. Plus almost all piston slap motors stop knocking when they warm up. That is why it is often referred to as CSK or cold start knock. There is a TON information on it on the 99-up truck forums over at chevytalk.com if you want to do some reading up and maybe get a sound clip. Just search it under CSK.
Good luck figuring it out man
Vicinity... having a 5.3 for 5+ years with piston slap yours definitely sounds like something else to me. I won't even speculate cause you can't really tell where on the motor the noise is coming from but it doesn't sound like mine at all. Plus almost all piston slap motors stop knocking when they warm up. That is why it is often referred to as CSK or cold start knock. There is a TON information on it on the 99-up truck forums over at chevytalk.com if you want to do some reading up and maybe get a sound clip. Just search it under CSK.
Good luck figuring it out man
11-12-2008, 12:42 PM
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Ehh... now I got a severe rocking from the engine or tranny at idle. This car is slowly pissing me off.
I think I'm going to swap out the engine next year. This one just sounds worse everytime I get out and listen... What noise does it make if it's going to throw a rod or whatever?
I think I'm going to swap out the engine next year. This one just sounds worse everytime I get out and listen... What noise does it make if it's going to throw a rod or whatever?
11-14-2008, 01:13 AM
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I have been thinking about buying a trans am or an ss, but how could GM let two models off the line with pistons that aren't sized properly for the block?
I mean there are areas on a car I expect corners to be cut, but the engine??/
How much is it to "fix" the problem? Does it mean you have to get a re-machine of the block and match the pistons for the correct diameter of each cylinder?
I mean there are areas on a car I expect corners to be cut, but the engine??/
How much is it to "fix" the problem? Does it mean you have to get a re-machine of the block and match the pistons for the correct diameter of each cylinder?
If these motors were flawed with this detrimental "piston slap" they would not have lasted thousands of miles on thousands of cars. You could line up 10 people to listen to something and get ten different opinions.
My own car has been started up and beat on so many times and yet still comes back begging for more.
The real story behind these engines is they are the begining of GM's engine of the next couple of decades. The head design, block, roller lifters rockers, simple push rods and on and on.
People like you in the "used car market" have to shop wisely period. Look for engines that have not been over raced and under maintained. Solid cars with some life left in them.
You will miss out on the best bang for your buck ride made in a long time if you pass on the LS1!
11-14-2008, 02:10 AM
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^^ Whatever sound my engine has, makes no difference on performance, if I smash the pedal, I roast the tires. It doesn't matter what sound comes out, these engines will move the car.
I'm just picky about noise.
I'm just picky about noise.