Nope, I would go kaboom by now. I'm not really worried anymore about the engine noise. It's a little inconvenience. One theory I have heard was that since there is less space in the cylinder due to bigger piston there is less material to absorb the noise.

Also, if this problem would have anything to do with valves the performance would probably be affected.

 

Well in a few days time I'll be able to see if mine does the same thing, although mine is also overbored so....

 

gl and welcome to the club

 

So did you try bleeding the lifters? I wonder what our oil pressure is compering to stock compression 4G94??? From all the info I got, a lot of the websites point at the valves, valve guides. But the guy who was rebuilding my engine said he never took the head apart...

 

i've got a similiar noise.....not as loud as yours but similiar.....does it seem like it comes from near the intake manifold because thats where mine sounds like its originating from. From inside the vehicle it sounds like its coming from right behind the glovebox.

It makes the rattling noise when I'm only on the throttle at around 2000rpms and above. It sounds the way a valve would if it were trying to stay open but can't due to lack of pressure and keeps tapping shut.

I can also hear in mine what I think is an exhaust leak somewhere, but thats another story.

I know I'm not nearly as modded as you but I still get a similar noise. Hopefully we can both figure out what our noises are.

 

got Kamikaze headers to replace the stock ones... hmmm an upper powerband

 

Awesome. Dyno? PLZ?

Which one did you get? High temp? Ceramic, nickel?

 

every time i read this thread's subject i think of My Bondage and My Freedom by Frederick Douglass. had to read it in college and i can't shake it.

 

the ones that are silver but aren't shiny lol. i'm at work and can't visit bigjosh

and why do you think of a book by frederick douglass? lol

 

I've seen a couple of guys with this noise... after looking into things i'm wondering if they are gapping the rings correctly upon install.

Seems some are gapping to stock specifications where the ROSS pistons call out different specs, as do JE and even Weisco.

All of them have a different spec than stock and call out making the second ring looser than the first... this is usually not common to do. I know i did it like that and NEVER had that noise. My head had even been decked a few times.

 

Did I mention that the guy installing the pistons for me never used instructions?

What if the rings were not gapped properly???

 

that could be the cause of these problems... they have to be gapped properly.

Ask what he did gap them to... then check with the piston manufactures to ensure he did it right.

 

What are the consequences of improperly gapped piston rings???

Can I just live with it or is it fix it ASAP?

 

I'd fix it... could have no issues other than the noise and some blowby in the case of excessive gapping.

In the case of under gapping you risk the possibilities of scarring the cylinder and locking up a piston. This could lead to other failures as well.

 

Would it cost the same as swapping the pistons? Or is it just take of the head, oil pan, push the pistons up and then regap the piston rings?


How much would it cost?