Identity Crisis

[riverjet502]

Re: Identity Crisis

Looks like a homemade tattle-tale coming out of the t-stat housing too? If it runs out good I'd give the whole thing a new paint job and keep it

 

[Joe Reeves]

Re: Identity Crisis

Tash..... The engine design is a 1978 25hp Evinrude, top to bottom.

Edit: However, the 1978 design does incorporate solid state ignition, and this engine powerhead has straight magneto ignition. Could be an ignition conversion. or a replacement powerhead?

 

[Gary H NC]

Re: Identity Crisis

Joe Is The Man!!:d
Td Will Surely Appreciate That!

 

[tashasdaddy]

Re: Identity Crisis

thanks, Joe.

 

[F_R]

Re: Identity Crisis

Sure does look like a 22 cubic inch powerhead to me, not a 31.8 as the 1978 should have.

 

[jay_merrill]

Re: Identity Crisis

Joe, are you looking at TD's motor or the one that whywhyzed posted? There is nothing about TD's motor that looks like a '78 to me, but whywhyzed's Johnson might well be.

Look at the powerhead - it is Johnson green and the paint looks like it is original. That particular shade of green would make it a 1969 or 1970 and I think its a 1970. Also look at the thermostat housing on the head. It's just like the older motor and not at all like the 1978. I'm with FR, this is the 22 CI block.

The flame arrester/filter screen on the carb, however, is off a motor that is a 1971 or later. This is evidenced by the single leg on the bottom. starboard side of it. The 1970 was different and had a pace where both the choke stem and HS jet passed through.

On the exhaust housing of TD's motor, the lower shock mount bracket is rounded, while it is squared on the 1978. The section of the exhaust housing where the water pump assembly is located is also rounded on this motor, while the 1978 is flat on the top.

I still think this motor is a collection of parts, mostly consisting of an Evinrude dating from about 1972 to 1975.


PS: What is curious about this motor, however, is that the hood looks like a 1978 Evinrude 25. This means that the lower cowl section is from a similar year also because the shape of the lower cowl from 1976 and older is different.

 

[Chinewalker]

Re: Identity Crisis

The engine chassis looks to be early 1970s Evinrude 18/25, as evidenced by the dark blue color and the white ribbed grip.

The powerhead is Johnson 20 or 25, c. 1970 to 1972, as evidenced by the gold/green color and lack of low-tension magneto coils mounted on the cylinder head. Block is clearly a 22-cube and not a 32...

I'm pretty sure the cylinder head will have a 25 embossed somewhere on the cylinder head if it is a 25 horse powerhead. The 18/20 and 25 heads were different and can't be interchanged. I can't recall if the 25 was inside the dome or outside on the head.

- Scott

 

[jay_merrill]

Re: Identity Crisis

I agree on the powerhead, Chinewalker. I don't think it is a 1972 though because the paint color was a much lighter green that year. Here's a pic that shows some of the painted lower cowl on my 1972 Johnson 65hp.

Also, I just dug through some of my old paint cans and the color on TD's powerhead was called Forest Green - it was used from 1969 - 1971.

 

[tashasdaddy]

Re: Identity Crisis

i agree it is a johnnyrude, there are blue and green parts on the motor, that don't show. once i get the carb to stop leaking, it will be sold. as a frankenmotor.

 

[Joe Reeves]

Re: Identity Crisis

Jay...... Mainly I'm looking at the hood and its decal (1978 25hp), the exhaust housing, and the lower unit. They seem to relate only to the 1978 model in my books and also the past (in particular 1978) dealership engine brochures that I have on hand.

The powerhead is another matter of course and is obviously a conglameration of parts. I doubt seriously that the exact horsepower or year of the powerhead will be determined without a teardown UNLESS possibly the crankshaft number can still be viewed on its taper.

As it stands, if it were mine, I'd consider it a 1978 25hp Evinrude, then within a few minutes the powerhead would be on the bench experiencing a teardown. I've been wondering just when they designed that top located water telltale exit (grin).

 

[jay_merrill]

Re: Identity Crisis

LOL, I missed the telltale until you mentioned it - I think it was the 1978&3/4ths model, but only the ones that were manufactured in Santa's workshop!

 

[G DANE]

Re: Identity Crisis

It IS a 22 Cid powerhead. The colour tells between 1970 and 1974, Johnson. Those had the low-tensions ignition, but this one straight magento, as Joe points out, which means a complete ignition of earlier vintage. Those had the horsepower stamped in the reed-plate, on a small bit, visible on the starboard side, I think, 20 or 25. That is if it still has its own reed plate. Its probably gathered from the junk-pile, i've done that too, and doesnt mean its a bad motor. The 22 Cid block will never sit on a never med-section, no way.