Johnson 225, temp send unit install ??

**Tightrig 12** · 01-19-2018, 10:02 AM

I have twin 89 Johnson 225 v6's....want to install electric water temperature sending units and gauges.
Anyone have any input on where to drill and tap a sending unit ?
Thermostat housing is pretty small....however that would be the ideal spot.
Have a Lot on $ wrapped up in motors, the overheat buzzer means too late !
Suggestions appreciated!
Thanks, Bart

**mrichartz** · 01-19-2018, 10:19 AM

just to the side of the t-sat they are tapped just need to install the sending unit..trying to find a good pic

**mrichartz** · 01-19-2018, 10:29 AM

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**Tightrig 12** · 01-19-2018, 10:52 AM

can it be drilled out to connect to water passage or did you just install sending unit

**Tightrig 12** · 01-19-2018, 10:53 AM

by the way... your boat looks badass !

**mrichartz** · 01-19-2018, 11:05 AM

I just installed the sending units..used a pryometer to check temp and was spot on. . I didn't drill it out the sending unit bottoms out on it and IF I remember it's not that thick so...and thanks

**Tightrig 12** · 01-19-2018, 12:42 PM

What set up on your motors ?

**mrichartz** · 01-19-2018, 01:13 PM

The temp gauges or? Just some led digital ones, they are easier to read for me than my other gauges..

**mrichartz** · 01-19-2018, 01:20 PM

What year is that eliminator looks nice..how's it run with those motors and did you do anything to them?

**Tightrig 12** · 01-19-2018, 01:36 PM

1989 v6's
Complete rebuilds
.040 over...Swaines coated pistons
CDI coil packs
Just installed 2.7 heads rejected to 64D upper and 65D 5&6. Did not gut air box......yet !
New CDI power packs
Bob cones...28 Mazco RE wheels

Only had the boat out 2 weekends end of sumner.....Ran good after some tuning.
Steering was old and a little loosy-goosy.
Didn't take it past 75. This was before mods listed above.
Hope to wake these dinasours up a bit with the new heads.

**Tightrig 12** · 01-19-2018, 01:41 PM

Boat is 1988 23ft
Just had all interior done...previous owner had boat gutted and resealed floor, new seat boxes, new Levorsi gauges and shifters....now on floor.
Boat gel is in incredible shape. Looks new !
Hull also perfect shape.

**Tightrig 12** · 01-19-2018, 01:44 PM

Looks like from your photos... you went with the purple theme as well...looks nice

**mrichartz** · 01-19-2018, 02:22 PM

Oh,
-Cdi 8500 rpm digital ignitions..power packs,timing bases,stators, rectfiers,Harnesses everything..
-Opened the exhaust from backs and lower units
-Velocity stacks
-rejetted (damn don't remember off the top of my head)
-thinner head gaskets
-Solid mounts.
-and some other stuff..
-have worked 26 choppers and 28 cleavers..
Have been looking for 2.7 heads..but

Have anymore pics of yours