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I am about to start assembling my 383 and noticed these 2 small chips towards the bottom of the cylinder wall. They are about 1.5 inches from the bottom. I am thinking they will be fine. Thoughts?
My concern is those chips can possibly become larger and catch the rings and end up causing carnage. I've heard good/bad things about sleeving a cylinder, but that would definitely be something I would look into before assembling it.
Check piston placement vs stroke, see what could/can run past them, you might be okay. For sure the rings would never get that low.
Looks like you already spent money on the block for machining, a little creative work on the piston and re-balancing them, might be an easier/less expensive way to go vs getting another block and starting over.
I am about to start assembling my 383 and noticed these 2 small chips towards the bottom of the cylinder wall. They are about 1.5 inches from the bottom. I am thinking they will be fine. Thoughts?
If I can catch my fingernail on the cylinder wall I won't run it.
Originally Posted by ******
will the rings go over those marks?
This, at least it isn't in the top 3 inches any tiny mark up there and I wouldn't run it
Originally Posted by SS RRR
My concern is those chips can possibly become larger and catch the rings and end up causing carnage. I've heard good/bad things about sleeving a cylinder, but that would definitely be something I would look into before assembling it.
I've had lt1's sleeved before and ran alcohol and nitrous in them. Nothing wrong with a sleeve in an iron block, just a lot of work.
Originally Posted by ******
if it were my motor...I would get another block before sleeve
The price my machinist charges I think its cheaper to get a block.
It is splayed and clearanced for 383 already and has been honed. I was cleaning it for assembly when I noticed these marks. I agree that they are from the casting process, they dont appear to be caused by anything else.
I am going to throw an old crank and piston in there to make sure the rings dont go over them.
That's not going to be the same thing. When combustion happens the rings are pressed against the cylinder walls. What may pass as fine in a mock up may be completely different with a motor under load at high RPM.
I have my new crank and rods, but I am getting custom pistons so I havent ordered them yet. I thought the idea is that the stroker pistons are made to keep the rings in the same position as stock??
That's not going to be the same thing. When combustion happens the rings are pressed against the cylinder walls. What may pass as fine in a mock up may be completely different with a motor under load at high RPM.
Combustion wont make the rins go further down into the cylinder, though. That is what I need to check--to make sure those spots are below the lowest point that the rings travel.
I would of taken the block back to the machine shop and asked them what those marks were and let them decide if the block was safe to use or not. Still I'd be annoyed if the shop didn't notice the marks or tell me before they even started. That's one of the first things the shops around my way do before they get into a job.
On another note maybe it's time to see if JB weld really works
All of the machine work was done a few years ago. I am 99 percent sure that we discussed them back then and he said they would be fine.
Originally Posted by Heatmaker
I would of taken the block back to the machine shop and asked them what those marks were and let them decide if the block was safe to use or not. Still I'd be annoyed if the shop didn't notice the marks or tell me before they even started. That's one of the first things the shops around my way do before they get into a job.
On another note maybe it's time to see if JB weld really works
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2 small chips in cylinder wall 
