what year are these motors?

[greg2536]

I recently bought a boat with two Mercury motors. But neither has the info plate on them. The older is a 100hp and the newer is 150hp. Can anyone give me a good guess as to the year of each? The older is a straight six and the newer is a v6

 

[Yepblaze]

Re: what year are these motors?

Just a guess, as the wraps are interchangeable through many year models.


The older straight 6 appears to be mid to late 60's and should have two (automotive looking) ignition coils. And might range from 80-135?hp

 

[greg2536]

Re: what year are these motors?

other than the obvious infor plate thats not no these motors, is there any other way to determin their age. I'll look for the ignition coils when I get home.

 

[Yepblaze]

Re: what year are these motors?

The tall 6 should have a block part number cast into it. Along with some canine (oops, I meant feline) animal's name such as Tiger.

 

[craigandmiika]

Re: what year are these motors?

The tall 6 should have a block part number cast into it. Along with some canine animal's name such as Tiger.

tiger is a feline

 

[achris]

Re: what year are these motors?

The V6 is mid 80s... There should be a serial number on the engine block somewhere... either stamped into the top of the block casting, or on an aluminium disc that looks like a freeze plug, near the bottom of the engine block...

Chris.........

 

[greg2536]

Re: what year are these motors?

Thanks, it's a bit frustrating not knowing the year of either engine. Hopefully I'll be able to find the stamped numbers.

oh by the way, how is the weather down your way? I have an x sister in law that lives in Perth and I lived for three years in Adelaide SA back in the 90s, great place.