Random Thought Thread

ryco1008 said:
I’ve never worked on John Deere’s and without seeing it and how it is designed I can’t be sure of my response but if the block mating surface is corroded away, just deck the block…

Same with the cylinder head if needed. I wouldn’t bother with boring whatever out and pressing metal of some sort into it and then decking it…just deck it. There should be a spec limit for how much you can take off of both and depending on how severe the corrosion is that should be all that’s needed.

Again without seeing anything it’s hard to answer. Hopefully nothing is cracked etc.
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Unless the block and head are warped, I’d stay away from decking anything because changing the compression ratio on an original bottom end or changing valve geometry on a used head will most likely lead to failure.
It’s like throwing a Nagasaki Noisemaker on an old LS with 200k miles on it. All fun and games till you send the rods to god.
 
oldmanwilly said:
Again...?

41YUNlr.gif
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it's literally about the Titanic
 
Standard78 said:
Unless the block and head are warped, I’d stay away from decking anything because changing the compression ratio on an original bottom end or changing valve geometry on a used head will most likely lead to failure.
It’s like throwing a Nagasaki Noisemaker on an old LS with 200k miles on it. All fun and games till you send the rods to god.
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Depends on engine design. Again without knowing more about the Deere and seeing pics of the corrosion/issue my opinion of decking the block instead of boring and inserting metal then decking it flush etc would be my recommendation. Yes it could need adjustments afterwards. can it even be decked and stay in spec? All unknowns without more information. Deere might not allow the block to be decked but if there is a spec and very little material needs to be removed to get past the corrosion and it is still in spec I would imagine/hope Deere would list the steps needed to go from there.

If decking is not possible (deep pitting in the block that goes past minimum spec) then yes I wouldn’t deck the block and at that point if the machine is that old/ can’t get parts etc sure try any experimental repair you want. But I’ve never seen or heard of that kind of repair done to a block in regards to boring it and inserting new metal in. I’m sure if anyone could do it it would be Nathan and if he goes that route I hope it goes easily and without issues.

I would be interested in seeing pics of it to see what the issue is.
 
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beeinak said:
Nathan, you might look at Tractor Forums or My Green Tractor.

I have an old JD 550 dozer and have gotten goon info from some posts.

Good luck.
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Nathan I would disregard the above suggestion.
Goon info is seldom helpful unless you’re looking to rough somebody up. Goons typically don’t know shit about tractors in my experience.
YMMV
 
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