transom mount patterns

[mnw001]

Does anyone have any dimension info for transom mounts. I know their is a standard and riggers use a drilling template but does omc and merc and others use they same pattern or are they all different?<br /><br />Are current Bomb's the same as older crossflows..<br /><br />I have a aluminum boat drilled for a 1990-50hp Force and I want to build a staionery jackplate to accept a 79 crossflow. I just want to minimize holes but if newer engines are using the same as the 79 model I may just redrill it. The Force is quite different from the omc><br />Thanks in advance

 

[piniongear]

Re: transom mount patterns

I can help you with that one I believe. Let me look it up and I will email you a copy.......piniongear

 

[Paul Moir]

Re: transom mount patterns

They've been the same for all outboards since the early '70s I believe. For Johnny/Rudes it goes way back - my '65 33hp conforms, and I've heard it comes from the original V-4 bolt pattern (after they gave up on clamps!).<br /><br />Check out 2k's post:<br /> Click here.<br /><br />EDIT: Piniongear beat me to it, and with a much nicer offer!