Re: 1972 65horse Evinrude Weight And Telltale
Your motor is a 20" shaft length and weighs 208 pounds. Although there was a 15" shaft length made and you have to be careful of this, if you ever have to buy any parts related to the exhaust housing (swivel bracket, for example), there aren't many of them around. That motor weighs 201 pounds.
The motor does not have a factory installed telltale. Many people, myself included, install them after the fact. There is an OMC cooling system Service Bulletin (#2276) on modifying telltale locations -
do not follow it for this motor, because the water passages are not in the same place as those covered in the SB.
Here's how I did mine, after consultation with the owner of my local OMC/BRP dealership. The guy that I talked to has 35+ years as an authorized OMC mechanic. I could have installed the nipple in the block, on the starboard side of the motor, but there are two problems with doing that. The first is that you can't get the nipple high enough to deal with the air pocket issue that OMC was concerned about, in the SB that I mentioned, above. The second, is that you have to remove the ignition system bracket and everything on it, to get at the area you would need to drill.
While doing this probably isn't that much more work than pulling the head, as I did, I think its a poor choice. For one, if you ever need access to the nipple again, you have to do a lot of work to get at it.
On the nipple - it is a stock carburetor part for a later model engine. I don't know the part number, but a competant parts person could find it pretty easily. Some disagree with the use of a bronze nipple, due to the possibility of dissimilar metal corrosion, but my take on this, is that the arteries in my heart are likely to "corrode" at a much faster pace than this nipple/head combination will. I think I will probably be long gone, before the tell tale nipple on my motor falls out!
Note that I installed the nipple in the top of the head in a position that is offset from center. I did this so that I can still use the chain lift point on the motor. My original plan was to run the tubing down the port side of the motor, but that ended up seeming a little awkward. I still may change it to that arrangement though, for a couple of reasons. One, it would get the tubing away from the ignition parts (leaks might = water all over them) and second, the rubber tube barely clears the air intake duct on the inside of the hood.
As an afterthought, I could also have placed the exit nipple on the port side of the lower cowl pan. Frankly, I don't remember why I didn't do this, but it might have been because I thought I would be able to see the stream from the boat's steering position, better.
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