My timing chain guide recently broke, causing my timing to jump on my 94 22RE.

I removed the head because I want to send it out to the machine shop to get testested. There is no noticable damage on the head.

I did notice some small nicks in the piston head. Is this something I should be concerned with? It is very small. Looks like the size of a thumbnail clipping.

 

Take a look at this one.


I think at some point it had sucked in a small piece of metal, or maybe a spark plug electrode broke off. I dunno, found it like that after the head gasket blew on the cylinder next to it(unrelated). Anyways, I re-used it the way it was. Ran fine before, ran fine after. Then a little while later another piston cracked, and I replaced them all. Long story...

So, yeah, I think it'll probably be fine. Go ahead and run it.

 

Nice. Thanks. That makes me feel better.

I wish mine were that clean.

 

I have more experience with snowmobiles/2-strokes, but i have had some that end up looking like the above due to leaning out. Just take some emery cloth or something to take the high spots off (they will become hot spots otherwise). you might lose a not noticeable amount of compression, but you should be fine.

 

That is a really clean cylinder..At first I thought you had gotten really ocd with a brush and gasoline or something lol..but what looks like a bit of coolant makes me think it looked that way when you pulled the head off?

 

You should be fine my timing chain skipped a tooth and dented the s out of two of the pistons and i got another 150k out of that motor.

Burning coolant cleans the cylinders. You can always tell which cyl is burning coolant because it will be sparkly clean.

 

looks better then mine. then again eb's prices make things affordable so i went ordered all new ones

 

 

Thanks guys.

 

Man that look fixable..how much JB weld you got?

 

lol i got creative and found all the pieces and tig welded it back together that's the stock std size i had the new block bored .40 over it scared up the crank as well so bad i coulda had 4 different size bearings after having it machined. so i just ditched all the old and started gathering new parts.

 

 

Allow me to explain.
You are correct, they looked that way when I pulled the heads off. All 6 cylinders. I'll show you 2 more of them. But that's all the pics I took. It wasn't surprising to me how clean they were(I knew the real reason why). What was a bit shocking was the HG blowing on the #1 cyl instead of #6, and the dings on the #3 piston. Hence these 3 pics.



You're not wrong about that. But you are wrong about it in this case. You see, the head gasket blew on the cylinder next to it. And it doesn't appear to be even as clean as that one. But like I said, they all looked pretty much the same as far as cleanliness.

So what's my secret for keeping a motor with ~218,000 miles at the time so clean internally? No secret at all...

Sea Foam of course!!! Every 3000 miles just like it says to on the can.

 

Never seen the aftermath of this stuff..picked up a can for my girlfriends Honda but never tried it. I was thinking you hand cleaned it.

 

dude yall have it all wrong. the 22re loves seafoam as a matter of fact use your windsheild resv to hold it. and have it ported into the intake. it'll help fight off the black goo and act a nos

 

when i got my truck this is how bad it was since it came off the assembly line.

another reason after i finish building my engine couple months down the road i'll prob go pane if i can afford it and find places to keep filled up