BigNiner19
Petty Officer 1st Class
- Joined
- Jul 1, 2006
- Messages
- 234
As some of you know, I have been trying to update on here the progress of my rebuild on my 1991 Johnson 60HP.
The block was machined by a guy named David at Coastal Marine in Stuart FL. He was reffered to me by Dhadley on this forum and that was definitely clutch as David seemed to know quite a lot about my specific type of motor. He also sold me all the parts needed to rebuild everything and he gave me the best prices he could. He had EVERYTHING. The block was bored .030 and I used oversized pistons that fit in perfectly that he gave me.
I also moved the tell tale location to the top of head so that air can escape easier. He mentioned the air could make the motor run lean if it built up to much.
I put everything together in the process of a few weeks with the help of my father who is a real gear nut (Graduate school and baseball are really my top priorities at this time and take up a lot of time). But the motor was together by the end of March. April I wanted to slowly break the motor in. Never went WOT and was constantly varying RPMs to keep any rings from wearing in the same spots. I also had the fuel oil mixture at 40:1 for extra lubrication.
I've got a little over 10 hours on the motor now and just put my first tank of premixed 50:1 in. Hopefully it wont load up as easily now with a little less oil in it. The motor runs really good and strong. I've tried tweaking with everything as best as I can, and it runs pretty darn good. But like I said sometimes idling around it wants to stall out from loading up to much on oil. But hopefully that will be fine after running some normal 50:1 through it.
I've pretty much done everything I wanted to do to the motor, with the paint, the rebuild, stainless prop. Now all I want to do is find a 2 stroke oil mix that I like for it and find a nicer/bigger/wider hull to put this motor on. Something in the 16-17ft range. I know a 60HP is pretty small for some of those boats....but it should push it close to 28-30MPH and thats all I need. Especially in this expensive gas stage.
Thanks to all that have helped throughout the rebuild. Its a really strong motor, and hopefully lasts a long time.
Cory
The block was machined by a guy named David at Coastal Marine in Stuart FL. He was reffered to me by Dhadley on this forum and that was definitely clutch as David seemed to know quite a lot about my specific type of motor. He also sold me all the parts needed to rebuild everything and he gave me the best prices he could. He had EVERYTHING. The block was bored .030 and I used oversized pistons that fit in perfectly that he gave me.
I also moved the tell tale location to the top of head so that air can escape easier. He mentioned the air could make the motor run lean if it built up to much.
I put everything together in the process of a few weeks with the help of my father who is a real gear nut (Graduate school and baseball are really my top priorities at this time and take up a lot of time). But the motor was together by the end of March. April I wanted to slowly break the motor in. Never went WOT and was constantly varying RPMs to keep any rings from wearing in the same spots. I also had the fuel oil mixture at 40:1 for extra lubrication.
I've got a little over 10 hours on the motor now and just put my first tank of premixed 50:1 in. Hopefully it wont load up as easily now with a little less oil in it. The motor runs really good and strong. I've tried tweaking with everything as best as I can, and it runs pretty darn good. But like I said sometimes idling around it wants to stall out from loading up to much on oil. But hopefully that will be fine after running some normal 50:1 through it.
I've pretty much done everything I wanted to do to the motor, with the paint, the rebuild, stainless prop. Now all I want to do is find a 2 stroke oil mix that I like for it and find a nicer/bigger/wider hull to put this motor on. Something in the 16-17ft range. I know a 60HP is pretty small for some of those boats....but it should push it close to 28-30MPH and thats all I need. Especially in this expensive gas stage.
Thanks to all that have helped throughout the rebuild. Its a really strong motor, and hopefully lasts a long time.
Cory