1986 Evinrude 70 vro

[Oathkeeper]

Hello, I'm looking for some assistance with my 1986 70hp vro motor, I'm trying to locate the thermostat so I can see if it's possible to attach a sender and also locate the proper place to attach wiring for a tachometer. I managed to download the manual but I suspect my motor has been modified in some way so I can't easily locate these parts. I'm hoping someone has some experience in locating these parts. Please let me know if more information or pictures are required.

 

[racerone]

Thermo should be near top of the cylinder head.

 

[flyingscott]

The tach wire is in the controller and a cheap adaptor make hooking it up easy. Or you need to get the signal from the gray wire off of the regulator.

 

[Oathkeeper]

If I post pictures of the motor would you guys be able to point out exactly where I should be looking?

 

[racerone]

Is there a cover above the top sparkplug ?---4 screws hold it on.-----That would be where you find the thermostat !!

 

[flyingscott]

Put up a pic of the controller. Under the key is a 3 prong outlet. There is a harness for the tach that plugs in there.

 

[Oathkeeper]

 

[Oathkeeper]

Sorry for the delay, had to make sure I got some decent pictures during daytime.

 

[racerone]

And are you 100% sure that this is a 1986 model ??------Carefull taking bolts out on this salt water goodie.

 

[Oathkeeper]

Not 100% sure, that's what I was told it was. I did try and locate some model/serial numbers on the motor but they all seem to be faded. Ill more than likely end up just having a real mechanic attach the gauges if my tinkering risks breaking everything.

 

[flyingscott]

Your motor is an 85 or older block. I would guess it is an 84/85 model by the color and it has T/N/T.
​​​​​​You have the 49 cid block, An 86 model would have a 56 cid block. Your thermostat and poppet valves are under the water jacket cover. Good luck getting it apart. I would check compression and spark before I did anything. I would also try salt away in a tub before I tried to pull those bolts. I would also check those spark.plug wires as they look like automotive wires.

 

[Oathkeeper]

Now about the VRO is it attached, I do see some oil in here, the seller didn't mention me having to premix.

 

[racerone]

There is no VRO on this motor !!-----You have to mix at 50:1 ratio.------I am not sure I would spend any money on this thing.-----Looks like someone already replaced a lot of parts already.------Post picture of the cowling if original..