madgadget
Petty Officer 1st Class
- Joined
- Sep 28, 2009
- Messages
- 281
Hi All,
Yesterday I picked up a seized 115 I6 engine complete of about 1979 era. It apparently died due to not being winterised over our last winter, although I find that hard to believe having now stripped it down.
So story goes like this. found a cheapy engine on ebay I have all the gaskets required and seal kits to rebuild already. I go to inspect and the gearbox is free and engages gear ok, so thats a start. The rest looks complete. I ask what's happened owner said they were ill. It was running last summer and has since sat on the back of his boat in the harbour until the beginning of this season.
I pay him his money and take it home. I begin to think about this further and when I get home noticed that the elec solenoid is seized, the bottom two carbs are seized and generally its not looking too great. Even the starter was siezed.
Anyway a couple hours later I had the powerhead off the mid section, the exhaust plate and covers off, the transfer port cover off and finally the back plate to the engine. I could see that the corrosion in the ports was fairly extensive, and more to the point the engine seemed full of silt.
I nearly had a heart attack when I took the carbs off. The float chambers were full of corrosion, the springs the push the needle valves were totally rotted away - and again he said this was used last summer.
Even the internals to the fuel pump had rusted.
So anyway. I decided to see if I could get the crank out.
I managed to remove the two bearing end caps. The top bearing is seized totally, the bottom on reluctantly does turn. Thats a start?
Knowing that there was no chance to get the crank out with the pistons connected I had to find a way to disconnect them. In the end I had to drill the heads of almost all of the conrod bolts. That took a few hours but it worked like a charm. So now I had the crank out of the way.
I was then able to pull out with little force three pistons, which made me feel a bit better given the state of it. The other three I had to press out using a bar through the spark plug holes. They actually did come out ok and without damage.
So this is where I need some help.
Can this be repaired? I mean I have the skills to assemble/clean etc, but will it work and how bad is too bad before I can attempt a rebuild. Please look at these pics:
More in next post:
Yesterday I picked up a seized 115 I6 engine complete of about 1979 era. It apparently died due to not being winterised over our last winter, although I find that hard to believe having now stripped it down.
So story goes like this. found a cheapy engine on ebay I have all the gaskets required and seal kits to rebuild already. I go to inspect and the gearbox is free and engages gear ok, so thats a start. The rest looks complete. I ask what's happened owner said they were ill. It was running last summer and has since sat on the back of his boat in the harbour until the beginning of this season.
I pay him his money and take it home. I begin to think about this further and when I get home noticed that the elec solenoid is seized, the bottom two carbs are seized and generally its not looking too great. Even the starter was siezed.
Anyway a couple hours later I had the powerhead off the mid section, the exhaust plate and covers off, the transfer port cover off and finally the back plate to the engine. I could see that the corrosion in the ports was fairly extensive, and more to the point the engine seemed full of silt.
I nearly had a heart attack when I took the carbs off. The float chambers were full of corrosion, the springs the push the needle valves were totally rotted away - and again he said this was used last summer.
Even the internals to the fuel pump had rusted.
So anyway. I decided to see if I could get the crank out.
I managed to remove the two bearing end caps. The top bearing is seized totally, the bottom on reluctantly does turn. Thats a start?
Knowing that there was no chance to get the crank out with the pistons connected I had to find a way to disconnect them. In the end I had to drill the heads of almost all of the conrod bolts. That took a few hours but it worked like a charm. So now I had the crank out of the way.
I was then able to pull out with little force three pistons, which made me feel a bit better given the state of it. The other three I had to press out using a bar through the spark plug holes. They actually did come out ok and without damage.
So this is where I need some help.
Can this be repaired? I mean I have the skills to assemble/clean etc, but will it work and how bad is too bad before I can attempt a rebuild. Please look at these pics:
More in next post:
