Is this block garbage?

**jbar** · 08-13-2019, 05:58 PM

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?

**Motv18** · 08-13-2019, 06:38 PM

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

**jbar** · 08-14-2019, 04:14 AM

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.

**skeeter91** · 08-14-2019, 05:44 AM

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!

**rock** · 08-14-2019, 06:35 AM

Call James Perry and get a quote. Goes by wrenchin 2.

Rock

**bullet123** · 08-14-2019, 06:41 AM

I have a 175 EFI Block that I will never use. Might need a hole bored, cant remember. $100 plus ride.

**skeeter91** · 08-14-2019, 07:16 AM

Originally Posted by bullet123

I have a 175 EFI Block that I will never use. Might need a hole bored, cant remember. $100 plus ride.

i'm interested in it if Jbar isn't!

**racervboat** · 08-14-2019, 09:29 AM

Originally Posted by bullet123

I have a 175 EFI Block that I will never use. Might need a hole bored, cant remember. $100 plus ride.

Cant go wrong for 100.00

**Tritontr19** · 08-14-2019, 10:00 AM

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.