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Hi!
Need some advise please!
Bought a cheap damaged 2001 F40 with the purpose of recover it if be worth (if not sell parts and have some profit) to have a project on hands, learn a little more and replace my loved yami 2 strk 30 x3, I’m not in hurry to fix it.
Have a look on fotos to see what I’ve found when dismantled the motor.
The 1st cylinder wall is a little cracked, cylinder head damaged.
Here is what I supose that happened:
The exhaust valve broked, the piston compress it against the cylinder head damaging it, the cylinder wall cracked, the piston almost disappeared in 1000 pieces (pieces were almost on the oil sump) and the rod crooked (theory of backyardigan lol would like hear from you what could cause this and how this happened)
Now the most importante, worth fix the block?
I’ve been on a proper machine shop that fix the cylinder crankcases, they said can fix the cylinder head as new, weld the cylinder wall and feat a new linner sleeve, they said that will be good but is always a risk of failure (but unlikely) they asked 200€ +/- $250 for the job on cylinder head and crankcase.
Have you ever fixed a cylinder cranckcase like this with good results?
If I’m in US I would buy a used block but used parts here are rare on sale and very expensive and thats not the type of stuff my friends or family can bring me from US on the luggage to save on postage and costumes.
If I had to buy parts here defenitily would not worth it… Compared Yamaha parts with Mercury parts for this motor and most Mercury parts are half of the price here on boats.net from Yamaha parts for this model.
Already bought a used piston and rod in US but I want to be sure I’m doing the right thing before fix the crankcase...
Need some advise please!
Bought a cheap damaged 2001 F40 with the purpose of recover it if be worth (if not sell parts and have some profit) to have a project on hands, learn a little more and replace my loved yami 2 strk 30 x3, I’m not in hurry to fix it.
Have a look on fotos to see what I’ve found when dismantled the motor.
The 1st cylinder wall is a little cracked, cylinder head damaged.
Here is what I supose that happened:
The exhaust valve broked, the piston compress it against the cylinder head damaging it, the cylinder wall cracked, the piston almost disappeared in 1000 pieces (pieces were almost on the oil sump) and the rod crooked (theory of backyardigan lol would like hear from you what could cause this and how this happened)
Now the most importante, worth fix the block?
I’ve been on a proper machine shop that fix the cylinder crankcases, they said can fix the cylinder head as new, weld the cylinder wall and feat a new linner sleeve, they said that will be good but is always a risk of failure (but unlikely) they asked 200€ +/- $250 for the job on cylinder head and crankcase.
Have you ever fixed a cylinder cranckcase like this with good results?
If I’m in US I would buy a used block but used parts here are rare on sale and very expensive and thats not the type of stuff my friends or family can bring me from US on the luggage to save on postage and costumes.
If I had to buy parts here defenitily would not worth it… Compared Yamaha parts with Mercury parts for this motor and most Mercury parts are half of the price here on boats.net from Yamaha parts for this model.
Already bought a used piston and rod in US but I want to be sure I’m doing the right thing before fix the crankcase...
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