sgkent
Lawn Addict
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I was taught in machine work that the harder surface wears when combined with a softer surface when contamination is present. The expression was I think, "The softer material takes the charge and the harder material wears." People want to argue that all the time but think about it. Take a stick of butter out of the fridge, throw some glass shards, sand, woods splinters on it and press them into the butter. Rub it on something harder and see how much it scratches. The butter and contamination embedded in it don't wear much. The aluminum is soft enough that sand and debris is embedding in it. The contamination then wears the crankshaft.
- Joined
- Sep 7, 2024
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That looks to be beyond saving, the seal groove and aluminum scoring tells me this thing was run low on oil. Here is a used long block engine I found on Ebay:
John Deere 14SB 14SE JX75 Kawasaki FC150V JS00 running long block engine | eBay
If I did make a mistake I will try to make it right.
www.ebay.com
Thank ms to you all for your input. I was hoping that given the good condition of the piston & rings and the cylinder, I would be able to replace the broken rod and be back in business. Then I noticed the scoring on the crankshaft from and lid. I knew I should get input and advice looks like it’s destined to go to the recycling center
Cfs,
Wondering about where you're located and if you still have this engine? I just picked up an identical jx75 built in 2004 that I'm working on with my son. Still troubleshooting, but it sure looks like the piston rings are shot. Hoping to borrow a borescope from my neighbor later today or tomorrow to check out the piston and cylinder. I see that rings aren't too expensive so may go that route if everything else looks good.
If you're open to it I'd consider buying your good piston and rings (plus maybe a few other things) or if we live close I'd entertain selling the mower we have. Maybe one of us can make 2 broken engines into one!
Thanks!
Wondering about where you're located and if you still have this engine? I just picked up an identical jx75 built in 2004 that I'm working on with my son. Still troubleshooting, but it sure looks like the piston rings are shot. Hoping to borrow a borescope from my neighbor later today or tomorrow to check out the piston and cylinder. I see that rings aren't too expensive so may go that route if everything else looks good.
If you're open to it I'd consider buying your good piston and rings (plus maybe a few other things) or if we live close I'd entertain selling the mower we have. Maybe one of us can make 2 broken engines into one!
Thanks!
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If you know a good machinist, he may be able to turn the crank and put a bushing in the top main bearing as long as the area where the seal rides on the crank is smaller than the bearing area.
- Joined
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Hello hlw49,
The first challenge is finding an old school machinist that even knows what they are asking to be done. Second would be one who can actually do this. Third would be the cost of having such work done.
The old machine shops of "we can repair anything" have faded off terribly in recent years.
I came from the "shim the bearing inserts days" when shim stock was still being sold to many shops. That stuff is just not available these days.
Even dressing the bore a connecting rod by the machine shop has been next to impossible in my area.
Not too long ago, they used to actually surface weld and turn crank journals to stock specifications, but the practice has become way too expensive.
The first challenge is finding an old school machinist that even knows what they are asking to be done. Second would be one who can actually do this. Third would be the cost of having such work done.
The old machine shops of "we can repair anything" have faded off terribly in recent years.
I came from the "shim the bearing inserts days" when shim stock was still being sold to many shops. That stuff is just not available these days.
Even dressing the bore a connecting rod by the machine shop has been next to impossible in my area.
Not too long ago, they used to actually surface weld and turn crank journals to stock specifications, but the practice has become way too expensive.