Bolt hole pattern for engine mounting

[kaferhaus]

I considering making a trade with a guy (not for the engine on my boat but one I have on a stand)

I currently have a 50hp Johnson (1987) and am considering a 50hp Mariner (1988)

Other than swapping the controls should I have any mounting issues with the transom hole locations? Or is the bolt hole pattern identical on most of these engines?

 

[cougar1985]

Re: Bolt hole pattern for engine mounting

should bolt right on no problem.if you were going for a 60,s motor id say maybe not but later on the manufactures standerized.

 

[kaferhaus]

Re: Bolt hole pattern for engine mounting

Thanks, I had thought the mounting pattern was standardized some time back but wasn't sure. Don't want to be filling and drilliing anymore holes!

 

[ddrieck]

Re: Bolt hole pattern for engine mounting

If I am not mistaken, nearly all outboard manufactures went to the standard B.I.A. bolt pattern somewhere between 1984 and 1986. The big exemption to this was all the Pre-Mercury Force outboards

 

[seahorse5]

Re: Bolt hole pattern for engine mounting

It was Johnson and Evinrude who first came up with the standard transom bolt pattern 50 years ago for the 1960 75hp V4 motor.

Here are the measurements if you want to check:

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