Outboard mounting bolt pattern?

[low277]

I have read that outboard mounting bolt patterns where standardized in the early 1980s. Is this true? Will 2 different manufactures outboards of the same hp and shaft length match up to the holes already in my transom?

Also is there a published template of the standard pattern/s?



Thanks

 

[seahorse5]

Re: Outboard mounting bolt pattern?

I have read that outboard mounting bolt patterns where standardized in the early 1980s. Is this true? Will 2 different manufactures outboards of the same hp and shaft length match up to the holes already in my transom?

Also is there a published template of the standard pattern/s?



Thanks

The standard bolt pattern used by all outboard manufacturers was the Johnson-Evinrude design that they came out with for the 1960 75 hp V4 outboard.

Here is a link to the drawing:

http://www.etecownersgroup.com/tool/view/mb/file?username=barnaclebill&id=637072

 

[82rude]

Re: Outboard mounting bolt pattern?

I have read that outboard mounting bolt patterns where standardized in the early 1980s. Is this true? Will 2 different manufactures outboards of the same hp and shaft length match up to the holes already in my transom?

Also is there a published template of the standard pattern/s?



Thanks

my 1982 90 hp evinrude matched up with 1996 60 hp mariner no problem.201160hp evinrude matched up with 1982 90 hp evinrude.only time i ever had a issue was with a 70,s merc tower of power inline 6 that was narrower pattern .1980,s up no issues.

 

[low277]

Re: Outboard mounting bolt pattern?

Great! Thanks for the information and the link.