need help with 72 Evinrude Water pressure gauge and tell tall install

RJ2986

Cadet
Joined
Oct 19, 2013
Messages
13
So I am finally getting around to working my 72 100hp Evinrude (100293R). I wanted to add a tell tail to it but i noticed that i don't have the flat spot on my block that others tap into in the FAQ's. Can i tap into the same spot as others have without that flat spot or will the wall be to thin? I don't want to risk destroying my motor.

the area i am talking about is on the second image on this post. I don't have the circled flat spot on my block.
http://forums.iboats.com/engine-fre...johnson-evinrude-adding-tell-tale-222677.html

My second item is I also got a water pressure gauge and I am wondering where the best spot would be to tap into the cooling system.

Thanks in advance for any advice!
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
36,288
Re: need help with 72 Evinrude Water pressure gauge and tell tall install

Well the 71 model shows the spot with pipe plug # 307544 listed.-------Any pictures of your block and that same area on the side of #1 cylinder.-Perhaps a replacement block?
 
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