Hi everyone


I went and got another Ls1 Camaro a 2002 B4C last month. Test drove it ran and drove perfectly. Or so I thought. It was already warmed up when I got it. So I never heard what I guess is lifter noise. Until it warms up it gets top end engine noise. The car still has plenty of power. Just wonder what to do about this. I'm uploading a video to YouTube now.Will add once complete.

this car did sit in a shop for 10 years . so I'm wondering if its just grime I need to flush out .


https://www.youtube.com/watch?v=kDHw...ature=youtu.be

 

Engine sits for that long, some of the valves springs are suspect. All the seals are likely suspect as well, on OLD engines I usually drain the oil and fill with fresh high detergent oil plus a pint of seafoam or marvel, and run the engine til its fully warm (GENTLY) then let sit overnight and do it again, repeat for a week. Then drain the oil and put in fresh oil. Put about 1000 easy miles on it and put in fresh oil again. The chances that the cylinders that had open valves did not get some moisture in them are small so there may be oxidation in the cylinders. Basically I'd plan on at least a minimum of new valve springs and I'd bore scope all the cylinders to see if they are clean.

Good luck!

 

it doesnt sound terrible, i would honestly change the oil twice every 500 miles and see how she runs. they all have this noise for the most part and doesnt sound like anything is about to break. just dont rev it up like that when its cold. drive it gently on the highway for 10-15 min and when you come to a stop see if it still makes the noise. if it goes away then i wouldnt worry about it

 

NOTHING.......forget about it or suffer with a lot of worry. The real problem is the lifters were built poorly without proper clearances.......SO when the engine is off for 4-8 hrs the lifters start to bleed off too much, they causes air to enter the lifters and the clatter you hear when you 1st start it. Replacing the lifters is THE only solution, if you do sure to buy a very good set or you will be back where you are.

GM says any engine noise that goes away after 2 mins is normal. Another thing you can try is add a few ozs of TransX to the engine oil. It will clean any crap that is in the lifters but I honestly don't think it will help in your case. You just have poorly built lifters, the internals were not properly matched so they leak down to quickly. GM also did this for more performance.....the quicker the lifter bleeds off the faster the valves close completely. Its a double edged sword.

I also hear piston noise in your video which is completely normal, between the 2 noises I know it sounds bad BUT my WS6 sounds exactly the same from day 1 and has 140k on it now....still sounds the same. Just left it warm up for 2 mins before driving it cold and you'll never have trouble.

There is something you should try is to run a top engine cleaner to clean the built up carbon from the piston tops. The built up carbon can cause cold piston knock because the engine shrinks enough cold that the carbon can touch the heads. Once the engine is hot the engine expands and the noise disappears< this may be your biggest issue.

 

If I had a dollar for every new noise my car makes.
.it would be running 10s

 

That noise is piston slap. As the piston expands at operating temp, the noise will be reduced or eliminated. Just drive the car gently until the engine is at operating temp.

Russ Kemp

 

Thanks everyone,this makes me feel better .

 

That's not true, a slapping piston will never stop making noise......He has normal piston noise which is NOT piston slap. Obviously you have never heard REAL PISTON SLAP, it doesn't go away trust me. I've been doing this over 45 years.