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1985 Merc 115 HP

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ballardbeaver

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"Hello out there! I have a 19

"Hello out there! I have a 1985 115hp Mercury O/B.
This motor is 160 hours short of 3000 hours. She is still running strong, compression is just a little over a hundy in each cyl (within 10% of each other).

Planning for the future I was wondering about rebuilding this one and making it into a 140hp.
Is this possible and even more important does it
make since?

Thanking anyone in advance for the info.

CEC"
 
The " tower of power "

The " tower of power " are a great running motor.It may require new reed blocks to go to 140 at $250 each.The 6 cylinder is not a cheap motor to rebuild as you need to machine extra cylinders and buy more parts than a 4 cylinder motor.It may be better to sell yours and get a 140 that is refurbished with a warranty.Start looking for good used parts on E-BAY. Just 2 cents.
 
"Clyde, The difference in the

"Clyde, The difference in the blocks between the 140 and the 115 are significant. It may be possible, but likely not cost effective to have these done. You can get a 135-175HP Merc V6 used for $500-1000, which will give better power than your inline will ever achieve, no matter what mods you make!"
 
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