91mariah50omc
New member
"ok, i have a 91 mariah mx20 w
"ok, i have a 91 mariah mx20 with a ford 5.0 HO engine and a omc cobra outdrive. i had the lower unit rebuilt last july, pretty much a year ago now. i ended up with a crack that i am convinced was there when it was rebuilt. the crack is right where one of the bearings are at and i tried haveing it welded and it did not hold. i have bought one housing and it was the wrong one. i also have a king cobra upper and lower unit that needs to be rebuilt but i have it and i beleive it would be a easy rebuild. i have several options right now. i can buy a new housing and use all of the internals out of my existing unit. i could buy a entire new lower unit. i could find a transom for the king cobra and rebuild it and use it. i have also read that i can install a volvo sx onto the omc, my question here is wether or not it is the lower unit or the upper and lower unit that you can swap and what is needed to do this. can the king cobra swap onto it?? im trying to do this half way affordable and im gonna do all the work myself so i can save on the labor. i have overhualed engines and done uncountable engine swaps on cars. i also disassembled my lower unit to have it welded and reassembled it with no issues. nothing to it, people made it sound so scary! i have already past up a complete volvo upper and lower unit on ebay for 1300 dollars that i should of jumped on. another issue is gear ratios, is this a huge issue? can i swap the gears in any of the units to make them compatable for my set up or are they matched to the housings? im so confused and at this point its not gonna be cheap, the normal cobra has left me with a bad taste in my mouth, so i dont know if repairing it is the way to go. another thing, how much damage could be caused if the units filled with water? is there any chance the internals are still good? the king cobras bearings in the lower unit are for sure shot to hell but it still spins and the gears engage. i also have a lower unit housing for a cobra so if anyone needs one i may have the correct one for you. thanks for any help! joshua [email protected]"
"ok, i have a 91 mariah mx20 with a ford 5.0 HO engine and a omc cobra outdrive. i had the lower unit rebuilt last july, pretty much a year ago now. i ended up with a crack that i am convinced was there when it was rebuilt. the crack is right where one of the bearings are at and i tried haveing it welded and it did not hold. i have bought one housing and it was the wrong one. i also have a king cobra upper and lower unit that needs to be rebuilt but i have it and i beleive it would be a easy rebuild. i have several options right now. i can buy a new housing and use all of the internals out of my existing unit. i could buy a entire new lower unit. i could find a transom for the king cobra and rebuild it and use it. i have also read that i can install a volvo sx onto the omc, my question here is wether or not it is the lower unit or the upper and lower unit that you can swap and what is needed to do this. can the king cobra swap onto it?? im trying to do this half way affordable and im gonna do all the work myself so i can save on the labor. i have overhualed engines and done uncountable engine swaps on cars. i also disassembled my lower unit to have it welded and reassembled it with no issues. nothing to it, people made it sound so scary! i have already past up a complete volvo upper and lower unit on ebay for 1300 dollars that i should of jumped on. another issue is gear ratios, is this a huge issue? can i swap the gears in any of the units to make them compatable for my set up or are they matched to the housings? im so confused and at this point its not gonna be cheap, the normal cobra has left me with a bad taste in my mouth, so i dont know if repairing it is the way to go. another thing, how much damage could be caused if the units filled with water? is there any chance the internals are still good? the king cobras bearings in the lower unit are for sure shot to hell but it still spins and the gears engage. i also have a lower unit housing for a cobra so if anyone needs one i may have the correct one for you. thanks for any help! joshua [email protected]"