Longshaft to Shortshaft Conversion 1993 Evinrude 40hp

[addict620]

Hello. I have a 1993 Evinrude 15" lower unit with metal chips in oil and a good 20" lower unit (93). Haven't spotted a 15" lower unit for sale so I am considering swapping driveshafts and shift shafts to get the 15" motor going again. How far do I have to go to swap driveshafts? I'm familiar enough....remove waterpump and all below it, pull main bearing carrier, undo pinion nut and swap? Am I gonna have to replace seals for sure? Am I gonna mess up the shimming? What are some of the pitfalls I should be aware of? Thanks in advance for any insight. I have done 'bout all there is to do to an outboard rebuild block and gearcase. I have taken them apart, but never to be put back together!

[boats.net]

Will have to remove prop shaft bearing carrier, to get drive shaft out, shims shouldn't have to be changed, probably best to replace seals and orings.

[addict620]

Thanks. Was hoping to not mess with shims as I have know real knowledge of them. I remember the pinion nut as 7/8", any problems getting in there with a regular wrench or should I add the OMC tool to my arsenal? I think I may go for it....will post my successes and failures!

[boats.net]

Should be able to get pinon nut with a wrench or socket.