soundchaser
Petty Officer 2nd Class
- Joined
- Dec 8, 2009
- Messages
- 176
I'm wondering what exact change was made to make a 1964 40hp engine 50:1 oiling ratio when the 63 was 24:1. I have a factory 1962 manual and have been looking at the main crank and bearing setup pretty closely.
Is the difference that they drilled bigger oiling holes in the crank or something? Because it appears that all the bearings are basically the same. Did they really change something, Or did they just realize that they could run them fine with 50:1 mixture?
Is the difference that they drilled bigger oiling holes in the crank or something? Because it appears that all the bearings are basically the same. Did they really change something, Or did they just realize that they could run them fine with 50:1 mixture?