How can I post pic?

At the top of each forum is a sticky with instructions to post photos.

CLIK HERE

 

yeah, post a pic if you can.

Generally, if your not building a top level racing engine, shallow pitting similar to staining that isn't in high concentration or pits bigger in surface area than the ring is thick doesn't effct things at all.
If the individual pits are big enough that they are bigger than the ring is thick, then they can become a path for pressure to get from above the top ring to below the top ring....blowby and oil consumption will then be higher.
if they are not that big in diameter but are deep, then oil can hide in them and get burned up, with the result then being blow-by is low and performance is good but it uses/burns oil.

Comes down to having knowledgeable eyes look it over....thus the need for pics to do it through a forum.

 

Before and after and the vavles to that cylinder.

 

Boy, that second picture looks pretty bad....if it is enough that you can notice it by the fel of your fingernail dragging over it rather than just a remnant appearance stain in the grain of the metal it's not gooing to be good. If more than just remaining staining, that's going to be a pretty bad leak, blow-by and oil use.

Maybe a pic taken up close at a more direct angle to the cylinder wall so finer detail can be seen it might change my opinion, but from what I see so far it is toobad to expect a good outcome and it needs to be bored.

 

Ok I will get a better pic tomorrow and post it. Thanks for your feedback.I don't feel anything with the fingernail.

 

Eric is just trying to be nice to you because he is a nice person. The fact is, that cylinder is junk and needs to be bored and honed for a new piston and new rings. If cash is critical, you could leave the other 7 cylinders without boring and just hone them for new rings with the same pistons and bore #8 to the next oversize piston and rings. I would bet that one or more of the automotive machine shops in your area has an oversize piston laying under the bench just looking for a new home. Chances are that a +0.020" piston would work. The difference in static compression ratio and cylinder pressure between the 7 standard cylinders and the 1 oversize cylinder would be minimal. It's what I would do if I were strapped for money. If I had a little money, I'd bore all of them +0.030" with new pistons and rings.

 

Yeah I called the machine shop and asked them to do one .And they basically said we do all of them not one. Total for a complete bore was 250... 30 over. So i was trying to figure out the cheapest way. Around all of this.

 

Find another shop. I've had one cylinder bored several times.

 

some of the big rebuilders back in the day would bore each cylinder to account for wear, I took an engine apart that had standard, 030, and 060 Pistons in it, and had run like that for years.

never would have thought that would work. i'd be confused as heck to see 3 different bores. you guys forgot more than i know about motor tech. i've rebuilt 5 motors total, in my group, i'm the pro... :sweat:

 

some of the big rebuilders back in the day would bore each cylinder to account for wear, I took an engine apart that had standard, 030, and 060 Pistons in it, and had run like that for years.

 

Whats the plan for this engine? That's going to dictate much of what you do.

 

Right now I'm kinda lost of what to do😡. I'm checking on different options.

 

Pic of the wall

 

You could always put it back together & run it , might get you by for now ??

 

I'm thinking about just putting back together and run it. Worse thing would happen is that i have to pull it.

 

The rings were barley stuck. I got the on stuck

 

I agree Well the guy told me it ran when it was pulled. And he put oil in the cyclders and plugs where installed But from the pic I don't think that was true. So know I just got someone else's problem. ....

 

The intake was taken off. And so was the valve covers. To install new gasket. Which the intake wasn't even tighten just sitting on there. I don't understand why one cyclinder had rust and not the others.

 

I gave you the answer to this; which is the end intake ports are close to the ends of the head’s intake manifold surface where the coolant returns are also located. If the intake bolts are loose especially at the ends around the coolant returns or for surface fit or for surface quality reasons the gasket doesn’t seal,,, then coolant will leak into the adjacent intake ports and possibly into valley area and beyond.

This engine was’t running when you bought it. You got taken, it happens a lot.

Bogie

 

I'm saying after the engine was taken out of the truck Is when the intake was taken off. So maybe some antifreeze leaked down in the cyclder. And nobody even though about that. And just left the engine sit.

 

What do you think would happen if I ran it the way it is? Try it ?

 

If you're going to run it , at least pull that piston and check that its not damaged and neither are the rings , run with a damaged piston / broken ring , you're just about assured of catastrophic failure ...

 

The pistion and rings are In both great shape. From what I can tell.

 

Without removing the piston , you can't " tell" anything , you can't see it or the rings !

 

A cheep way out would be to break the glaze in the cylinder, buy a replacement set of rings, put it together and run it like ya stole it!!

 

I'm a guy who is up for taking a risk a lot of times, and I think if budget is a tight consideration and you are willing to gamble on maybe having to pull it back out....I would get a single cylinder set of rings, since you've honed that cylinder and I would not trust a ring that has gotten rust on it to still be viable.

Put the new rings on that used piston, put it back together and try it.

I would not gamble on re-using that cylinders existing rings set

You used to be able to get single cylinder rings sets, rather than full sets.... haven't done anything like this since the 1980's when I was a young buck though.

hastings Rings shows single cylinder 5/64' SBC ring setsfor between $9 and $13, while I could find a Sealed Power full set for $29 ....both of those with just a quick search through Summit Racing....your local NAPA should also be able to order then, maybe even Autozone/O'Reilly's/Advance Auto type stores probably could too.

 

Thanks again I went and bought new rings. I did pull the pistion out. So now I'm going to try it. Thanks for the suggestions on what to do. Hope it runs good keep my fingers crossed. ✌✌✌✌✌

 

Cylinder rust

That is not "a little rusty" that is really bad rust. If you don't have the time and money to do the job right the first time, when will you have time and money to do it over?

This block needs to be checked for cracks and re-bored.

I had a Buick V6 like this a few years ago. Only one cylinder was rusted, but it was a lot of rust. I had the one cylinder bored and sleeve put in it and then bored .030. Engine worked out great with no issues. Worth it for peace of mind down the road.