3500GMC
What T F, over
I think he's referring to the missing chunks from the bottom of the cylinder.. ?
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What is it? The diesel suddenly knocks!
- Thread starter valyidol
- Start date
valyidol
Active Member
Guys thank you for helping me!
I answer. The oil is clean. Antifreeze is not leaking. Rod bent because the rods cap unscrewing. Piece broke off because the rod clamped between the crankshaft and the cylinder. Maybe I badly screwed the nut. Maybe the thread was bad. I don't know. Piece is not lost it lay in the oil pan with two nuts two rod bearing and rods cap. Of course I can't be sure that there are no more cracks. But I'll give the block for repair to professionals and they will check it. Of course I'll replacement crankshaft rod and piston.
I answer. The oil is clean. Antifreeze is not leaking. Rod bent because the rods cap unscrewing. Piece broke off because the rod clamped between the crankshaft and the cylinder. Maybe I badly screwed the nut. Maybe the thread was bad. I don't know. Piece is not lost it lay in the oil pan with two nuts two rod bearing and rods cap. Of course I can't be sure that there are no more cracks. But I'll give the block for repair to professionals and they will check it. Of course I'll replacement crankshaft rod and piston.
valyidol
Active Member
Tell me pls where can I bay one or two pistons oversize 0,5mm (0.2"). eBay and Rockauto sells only set. Anybody have two pistons for sipping to Russia? On my piston is write:
valyidol
Active Member
Maybe used pistons?
valyidol
Active Member
Is the short pistons for 6.5?
valyidol
Active Member
I found the 2 pistons.
valyidol
Active Member
The professional engineer-mechanic told me that to one of the cylinders can't be installed the sleeve. Only to all cylinders in a row. And he asked me to measure the broken piece. May be not need to do anything and just clean edge.
ak diesel driver
6.5 driver
you can sleeve just one
valyidol
Active Member
the mechanic said that the sleeve is installed hot pressing. cylinders around which can be deformed.
valyidol
Active Member
the mechanic said that the sleeve is installed hot pressing. cylinders around which can be deformed.
How to sleeve right?
ak diesel driver
6.5 driver
The one sleeve I watched being installed the sleeve was super cooled soaked in gasoline and dry ice. The block was room temp. I'm sure there's other methods too.
valyidol
Active Member
What about the strain in the other cylinders?
Will L.
Well-Known Member
https://m.youtube.com/watch?v=GjJ037rRbNg
These are wet sleeve inserts, but works the same. There is no strain on the other cylinders.
These are wet sleeve inserts, but works the same. There is no strain on the other cylinders.
- Staff
- #94
Any good machine shop knows how to install just one sleeve. After sleeving they will normally use a SUNNEN CK-10 machine to go over all of the cylinders and make sure they are still true and round. If a machine shop tells you they have to do them all, then I would find a new machine shop.
valyidol
Active Member
OK. May be you are right. I hope. This is very good for me.
valyidol
Active Member
I have good block with crack starter bolts hole.
What do you think is it possible to repair this hole?
What do you think is it possible to repair this hole?
Will L.
Well-Known Member
Yes, cast iron can be welded. You just need to find some one in your area that knows how. Make sure you explain to them it is cast iron not steel before you take it to them. It has to be welded with almost pure Nickel rod, so it will not be cheap.
Try to find an old timer welder, at least 60 years old. Those guys had to do it all the time, not so anymore.
Try to find an old timer welder, at least 60 years old. Those guys had to do it all the time, not so anymore.
valyidol
Active Member
Welder said the block needs to be heated in the oven. It's not bad for the engine?
Will L.
Well-Known Member
To do it that way you have to completely tear down the block. New cam bearings, new freeze plugs, etc. doing that is involved, but it is the best way and will not hurt the cast iron. You have to check the block head surface afterwards to ensure it is still level. Maybe check line bore for crank mains if you want to be extra cautious, but it all should be fine.
It can be done without the oven, but if the welder is not familiar with a cold body nickle rod, this is not the thing to learn on. Maybe look for a different welder if you are trying to do it without rebuilding the engine.
It can be done without the oven, but if the welder is not familiar with a cold body nickle rod, this is not the thing to learn on. Maybe look for a different welder if you are trying to do it without rebuilding the engine.
NVW
Well-Known Member
Weld short beads and immediately peen the weld with a hammer or better yet an air chisel. Let it cool so you can touch it then weld another short bead, and repeat.