what would be the ratio for a 1939 johnson is it 24:1 or will i have to do 16:1
hitace Petty Officer 1st Class Joined May 4, 2007 Messages 390 Aug 30, 2007 #1 what would be the ratio for a 1939 johnson is it 24:1 or will i have to do 16:1
JB Honorary Moderator Emeritus Joined Mar 25, 2001 Messages 45,907 Aug 30, 2007 #2 Re: gas ratio question for really old outboard According to OMC in 1964, it should be 24:1, but the latest from BRP says 20:1. If I had it I would do the 20:1 thing.
Re: gas ratio question for really old outboard According to OMC in 1964, it should be 24:1, but the latest from BRP says 20:1. If I had it I would do the 20:1 thing.
T tmcalavy Rear Admiral Joined Aug 29, 2001 Messages 4,005 Aug 31, 2007 #3 Re: gas ratio question for really old outboard Original spec was 16:1 but you can probably go 24:1 with modern TCW-3 marine oil. It needs at least that heavy a mix cause it probably has bushings and not bearings inside...oil is cheaper than NA parts if you want to keep it runnning.
Re: gas ratio question for really old outboard Original spec was 16:1 but you can probably go 24:1 with modern TCW-3 marine oil. It needs at least that heavy a mix cause it probably has bushings and not bearings inside...oil is cheaper than NA parts if you want to keep it runnning.
