Rebuilding

[Todd Humphreys]

What is the longivity and durability of rebuilding? Most boat owners (that I consulted)agree that engines that have been rebuilt never last over 2 years (diminishing power or break). I would like to here your thoughts before I embark on the rebuilding journey.

 

[Joe Reeves]

Re: Rebuilding

That depends on who rebuilds them and how the owner(s) of the engine(s) operate and maintain them. The majority of the engines that I've rebuilt back many years ago are still running.

 

[JB]

Re: Rebuilding

If you do a professional job, as Joe Reeves would, you can expect to match the life of a new engine, DonkDaddy.<br /><br />If you cut corners expect less.<br /><br />Good luck.

 

[Todd Humphreys]

Re: Rebuilding

Would a professional job consist of all new parts; ie crank, all bearings and needles, rods,carbs, major componets. At what point is it no longer feasable to do a professional job vs. cutting corners. I have a 1982 75hp johnny. I bought it tired with 20 over pistons. I'm seeking to rebore with 40 over pistons and scavange most major components.

 

[20/20]

Re: Rebuilding

As others have pointed out it depends on who did the rebuild and how good of a job they did. Ask around about the person your going to have do the rebuild. If his average rebuild only last 2 years on average I would find a real mechanic. Rebuilds are only as good as what you put into them. If it were me I would but the most into it so that I could get the most back out of it.

 

[rodbolt]

Re: Rebuilding

beats me I have several that went past 7 years in the salt pond and one that has run over 13K gallons of gas through it since 98 still VRO and still crabbing.<br /> we have all the fuel reciepts that verify how much fuel <br /> most the time the same issue that caused the original rebuild causes the second as well.

 

[rayjay]

Re: Rebuilding

If you put a fresh topend on a worn bottomend then the motor isn't going to last very long. If all the brgs, crank etc are well within spec then the motor should last a long time. You are still stuck with 20+ yr old elec components that could die at any moment.<br /><br />I would replace the main and rod brgs and crank seals if the crank journals are in spec. Cheap ins. to go with the new topend.