Re: any harm in back flushing ’67 Johnson 100 hp?

[frankr]

Yeah, the plunger is supposed to be free in the vernatherm. And yeah, they do drink fuel. I sold mine because I couldn’t carry enough gas to go where I wanted to go. 6-8 GPH is the norm. And yeah, I did exactly what you did—removed a Merc with rear steering bar and replaced it with an OMC with front steering. The customer drove it all the way home, then called me to say it was backwards. Holy crap! I told him not to run it and I would come down and fix it. He said, naw he likes it that way. Needless to say I went down and fixed it anyway. Have you discovered that if it is a rack & pinion steering helm you flip the rack from top to bottom (or is it bottom to top?)

I highly respect fleetwin’s opinion, but I think 50:1 is just fine. Think about it, with all the fuel you are dumping through that engine, how could it possibly not get enough oil?