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Thread: Is this block garbage?
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08-13-2019, 05:58 PM #1New Member
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Is this block garbage?
Hi everybody, I have a 99' mercury 175hp efi. The #6 piston seized and broke the rod, then beat the cylinder bad. I assume the block is ruined but I included pics to get a 2nd opinion. Can I swap my internals into another block, the rest of the engine looks good except #6 but i haven't pulled it all the way apart and inspected everything yet. I'm new to building 2 strokes so i guess what I am asking is if I can locate a good 175hp block is there any extra machining/matching that has to be done to swap my internals other than regular work like cleaning and honing cylinders?
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08-13-2019, 06:38 PM #26000 RPM
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If the block is ate up not just the sleeve it’s highly possible this looks a Chaz question if the blocks aTe up, if just the sleeve should be able to re sleeve
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08-14-2019, 04:14 AM #3New Member
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The lower half of the sleeve was beat out of the cylinder and yes the block got damaged also. I was wondering if the damaged aluminum in the port areas could be welded up and machined back to specs and a new sleeve put in. Not sure if anybody does this or if it would just be too costly.
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08-14-2019, 05:44 AM #4
imo, you would be better off finding another block.There's a bunch of those 150/175 idle relief motors around, an undamaged block should'nt be hard to locate, although you may have to bore&hone, or resleeve. A weld repair on on of those blocks just does'nt seem worth doing, unless you do it yourself, which is not a simple fix by any means!
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08-14-2019, 06:35 AM #5
Call James Perry and get a quote. Goes by wrenchin 2.
RockTeam Junk
No sparkling wiggles in here, only dump truck grinches.
"Screamin Heathen"
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08-14-2019, 06:41 AM #6
I have a 175 EFI Block that I will never use. Might need a hole bored, cant remember. $100 plus ride.
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08-14-2019, 07:16 AM #7
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08-14-2019, 09:29 AM #8
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08-14-2019, 10:00 AM #9Member
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I also have a 1999 175 block that lost #3 rod bearing.
Rod never left crank as I shut it down as soon as it rattled.
It is completely taken apart as I wanted to inspect it. Was
a fresh water engine only. If anyone wants it I can txt pictures.
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08-14-2019, 01:22 PM #10
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skeeter91 thanked for this post
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08-16-2019, 01:25 PM #11
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