86 Johnson 140 vro

Storey

Recruit
Joined
Mar 8, 2003
Messages
1
I have recently purchased a boat with an old 140 johnson vro.My fourth time out I blew the motor.I turned a bearing on the crank.I have had the crankshaft polished and all looks well.I am adding up the pro,s and cons to rebuilding it and I am wondering if I can mix the gas and oil instead of the oilpump application.I have heard the oilpumps on these engines are a royal pain and I really dont mind the mixing.A little imformation would sure help me out.<br /> Thanks in advance <br /> Barly
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: 86 Johnson 140 vro

Barly.... The following may be of some interest to you.<br /><br />(VRO Pump Conversion To Straight Fuel Pump)<br /><br />You can convert the VRO pump into a straight fuel pump, eliminating the oil tank and VRO pump warning system, but retain the overheat warning setup by doing the following:<br /><br />1 - Cut and plug the oil line at the engine so that the oil side of the VRO pump will not draw air into its system. Trace the wires from the back of the VRO to its rubber plug (electrical plug) and disconnect it.<br /><br />2 - Trace the two wires from the oil tank to the engine, disconnect those two wires, then remove them and the oil tank.<br /><br />3 - Mix the 50/1 oil in the proper amount with whatever quanity fuel you have. Disconnect the fuel line at the engine. Pump the fuel primer bulb until fuel exits that hose with the tint of whatever oil you used. Reconnect the fuel hose.<br /><br />That's it. If you want to test the heat warning system to ease your mind, have the key in the on position, then ground out the tan heat sensor wire that you'll find protruding from the cylinder head. The warning horn should sound off.
 

Hooty

Rear Admiral
Joined
Oct 2, 2001
Messages
4,496
Re: 86 Johnson 140 vro

If it's a V4, it's probably a Loop Charged. That's GOOD!<br /><br />c/6<br /><br />Hooty
 

93bronco

Ensign
Joined
Nov 11, 2001
Messages
962
Re: 86 Johnson 140 vro

premix conv pump #438402, i was quoted $151.00. <br />but i think its 155.00 to 165.00
 
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