Rocker put a hole in valve cover

[Ultramaroon]

You may consider expanding on that.

[Tokay444]

Originally Posted by Pat

You may be ignoring the root cause.

Root cause has been addressed by Toyota, with rockers with better pin retention.

[Pat]

Originally Posted by Tokay444

Root cause has been addressed by Toyota, with rockers with better pin retention.

Yes, that may be the root cause. I'm not convinced we can determine the root cause, though, give the other information provided. There are certainly other factors at play in this particular situation.

[DJCarbine]

Originally Posted by Pat

Yes, that may be the root cause. I'm not convinced we can determine the root cause, though, give the other information provided. There are certainly other factors at play in this particular situation.

Don't leave us hanging, what other factors?

[Ultramaroon]

Originally Posted by DJCarbine

Don't leave us hanging, what other factors?

[Pat]

Don't you think the addition of a supercharger may have caused the engine to run outside of it's designed parameters?

[Ultramaroon]

You're evading the question. You said other factors were at play. Like what? More importantly, how? What's your theory?

[Pat]

Quite simply, I'm open to the idea that adding additional stress to the engine in the form of a supercharger that it was not designed to accept would add additional stress, thereby making failure more likely. I'm not saying I know how or why, or even pinpointing the most likely areas of failure. I am just saying that I am open to the possibility of it being a factor. To outright deny the possibility of something like this being a factor I think is just close minded.
If someone can prove to me somehow that it is impossible the forced induction could be a factor, I'm all ears.

[Ultramaroon]

Originally Posted by Pat

Quite simply, I'm open to the idea that adding additional stress to the engine in the form of a supercharger that it was not designed to accept would add additional stress, thereby making failure more likely. I'm not saying I know how or why, or even pinpointing the most likely areas of failure. I am just saying that I am open to the possibility of it being a factor. To outright deny the possibility of something like this being a factor I think is just close minded.
If someone can prove to me somehow that it is impossible the forced induction could be a factor, I'm all ears.

Ok, so you don't know and you want someone to spoon feed you. Got it.

[Ultramaroon]

Look, If you want to learn, ask politely. Don't come in acting like you have some secret inside info.

I'm happy to share.

[guybo]

Yeah, not thinking that an engine not designed for FI that throws a rocker out of the head MAY be related to the supercharger is pretty dumb. When you blow an engine you are increasing the pressure inside the cylinders, this increases how hard it is to push those valves which is done indirectly by.... the rockers. Maybe that's a weak point, but I can guarantee that they don't normally go on a NA engine at 30k miles.

You supercharged your car that was designed for NA. The engine expired at 30k miles. Not coincidence IMHO. I agree with @Pat 100%.

[Ultramaroon]

Originally Posted by guybo

Yeah, not thinking that an engine not designed for FI that throws a rocker out of the head MAY be related to the supercharger is pretty dumb. When you blow an engine you are increasing the pressure inside the cylinders, this increases how hard it is to push those valves which is done indirectly by.... the rockers. Maybe that's a weak point, but I can guarantee that they don't normally go on a NA engine at 30k miles.

You supercharged your car that was designed for NA. The engine expired at 30k miles. Not coincidence IMHO. I agree with @Pat 100%.

Haha... ok Do you know how to do the math? Let's start by assuming a typiclal thermal efficiency of about 20%. Do you get why we need to know that? Shall we continue?

See, you and Pat need to be invested in this little exercise. Otherwise I'm just being suckered into doing enough math to prove my point. Can you do the math to prove yours?

[Pat]

Please stop. Take a deep breath. Go back and read what I originally wrote carefully. This entire time I simply stated there is a possibility it was at least partially caused by something other than poorly designed rockers. That's it. Nothing more. I'm not here to start a fight or piss anyone off.

[Ultramaroon]

Originally Posted by Pat

Please stop. Take a deep breath. Go back and read what I originally wrote carefully. This entire time I simply stated there is a possibility it was at least partially caused by something other than poorly designed rockers. That's it. Nothing more. I'm not here to start a fight or piss anyone off.

You started with "You may be ignoring the root cause."

Then, because I wanted to be wrong about my interpretation of what a lazy and insulting statement that was, I asked you to expand on your thoughts. Maybe I really could learn something.

You doubled down with something along the lines of "prove it to me."

Well? Other than poorly manufactured rockers, what's your take? Make it worthwhile for me to prove it to you.