engine sounds like a diesel untill full opersting temp.
#1
TECH Apprentice
Thread Starter
iTrader: (2)
Join Date: Sep 2005
Location: College Station
Posts: 324
Likes: 0
Received 0 Likes
on
0 Posts
![Question](https://ls1tech.com/forums/images/icons/icon5.gif)
i know my car has piston slap, but lately the sound dose not go away until about 190 degrees
. As the RPMs reach around 2k this clattering gets louder and faster and sounds like a damn diesel. I always thought this was just piston slap but can piston slap get worse over time? The ol' LS1 is reaching 96K miles and I dont beat on her(that much). I did buy an aftermarket warrantee when I bought the car that expires at 98.5K miles. I took it to a dealership once and got this response:" LS1s' are just noisy man". What could this be?
should I try another shop? I want to have some good tech info before I pay 80 bucks for someone to tell my I have a noisy engine and that be the end of it. Thanks, Josh.
![Bang Head](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_banghead.gif)
![Icon Confused](https://ls1tech.com/forums/images/smilies2/icon_confused.gif)
#2
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
It is piston slap, and it can get worse. If it is not burning oil do not worry about it. The tendancy of a short skirt piston is to rock creating slap. If you can find someone willing to fix it, they will only change the pistons. They will use your same rings and not even hone the block. I switched to Amsoil 5W40 and it quieted mine down quite a bit.
#3
Launching!
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
ho **** man!
1. CHOKE THE STUPID MECHANIC
sorry I did not find more KILLING SMILES.
2. go to another dealer and LEAVE the car there, youre not negociating the ex waranty, YOURE DEMANDING IT
after the work is done sell the engine, and buy a zo6 engine:::::.....
1. CHOKE THE STUPID MECHANIC
![Bigun2](https://ls1tech.com/forums/images/smilies2/bigun2.gif)
![Chuck Ball](https://ls1tech.com/forums/images/smilies2/chuck-ball.gif)
![Twak](https://ls1tech.com/forums/images/smilies2/twak.gif)
![Smilylazer](https://ls1tech.com/forums/images/smilies2/smilylazer.gif)
![Kali](https://ls1tech.com/forums/images/smilies2/kali.gif)
![Bash](https://ls1tech.com/forums/images/smilies2/bash.gif)
![Punch](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_punch.gif)
![Bomb](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_bomb.gif)
![Guns](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_guns.gif)
sorry I did not find more KILLING SMILES.
2. go to another dealer and LEAVE the car there, youre not negociating the ex waranty, YOURE DEMANDING IT
after the work is done sell the engine, and buy a zo6 engine:::::.....
![The Judge](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_judge.gif)
#5
11 Second Club
iTrader: (34)
Join Date: Feb 2005
Location: Ft. Wayne, Indiana
Posts: 3,158
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I had piston slap....kept getting worse...went to three different dealerships...finally a reputable one replaced the motor under warranty. Call GM and file a complaint against the dealership that told you that BS that LS1's are noisy...gotta ruffle the feathers sometimes!! That's AN EXCUSE not a fix...for factory F...Up!! Best of luck to you.
#6
TECH Addict
iTrader: (6)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Yup, there is a whole website dedicated to piston slap. The mechanics are told to tell you anything to keep from replacing the engine because GM doesnt want to deal with it. Just keep bitching and they should eventually replace your engine. Good luck and let us know how it turns out.
#7
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
too bad i bought mine at 41K (factory warranty is 3yr or 36K
) and i didnt have the extended warranty. so here i am sitting with piston slap and nothing to do about it. doesnt burn oil though thankgod. just annoying as hell
so what oil seems to work well with quieting down slap while still giving ultimate protection? Amsoil 5W40 euro? 6 qts? where to get? thanks
![Rolleyes](https://ls1tech.com/forums/images/smilies/LS1Tech/rolleyes.gif)
![Sad](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_sad.gif)
so what oil seems to work well with quieting down slap while still giving ultimate protection? Amsoil 5W40 euro? 6 qts? where to get? thanks
![Hail](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_hail.gif)
Trending Topics
#8
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I have read that people are using all kinds of amsoil weights and im getting confused...5W30 or 10W30 or 5W40? which one???
Also what is the part number for the amsoil filter as i might as well go amsoil w that too
![Icon Confused](https://ls1tech.com/forums/images/smilies2/icon_confused.gif)
#9
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
The Amsoil filter that matches your car is the SDF32. The SDF30 has the same specifications but is almost an inch and a half longer. The Euro 5w-40 seems to be the hot oil as of late and it may be worth a try in your car.
Ken
Ken
#10
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by narc
too bad i bought mine at 41K (factory warranty is 3yr or 36K
) and i didnt have the extended warranty. so here i am sitting with piston slap and nothing to do about it. doesnt burn oil though thankgod. just annoying as hell
so what oil seems to work well with quieting down slap while still giving ultimate protection? Amsoil 5W40 euro? 6 qts? where to get? thanks![Hail](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_hail.gif)
![Rolleyes](https://ls1tech.com/forums/images/smilies/LS1Tech/rolleyes.gif)
![Sad](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_sad.gif)
so what oil seems to work well with quieting down slap while still giving ultimate protection? Amsoil 5W40 euro? 6 qts? where to get? thanks
![Hail](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_hail.gif)
#11
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
tirefryer thanks...she doesnt see track time..may take her once or twice
...I do not burn oil as it is but i think i will go 5W40 w the k&n filter as u said...so amsoil helps quiet down slap but does it give great protection? thanks for all the replies and info guys
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
![Hail](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_hail.gif)
#12
TECH Apprentice
Thread Starter
iTrader: (2)
Join Date: Sep 2005
Location: College Station
Posts: 324
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Yes thanks for the info, Its going to the shop on monay to have the tranny rebuilt. Im also going to get them to look at the engine. Maby have the timing chain replaced.
#13
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by narc
tirefryer thanks...she doesnt see track time..may take her once or twice
...I do not burn oil as it is but i think i will go 5W40 w the k&n filter as u said...so amsoil helps quiet down slap but does it give great protection? thanks for all the replies and info guys ![Hail](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_hail.gif)
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
![Hail](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_hail.gif)
Check out bobistheoilguy.com there are plenty of good used oil anlysis with Amsoil. It is one of the best performing. Give it a try you won't be disappointed.