I smoked one of my outdrives (198? Cris Craft Scorpion w/Merc 260s and Alpha outdrives) on the 4th of July weekend. When I took it apart this weekend (my first time with outdrives, lots of experience w/ motors) the upper gears are chunked and I had water in the fluid (milky). This boat has been extensivly modified (before I bought it) and I have had alot of fun (I am on my sixth set of engines) trying to see how much horsepower I can get from chevy 350's on 87 octane gas. I have been expecting the outdrives to go as I am putting a little over 300 (maybe 325 or so) horsepower into the alphas that I read are only rated for 300 max. I saw another topic where you said your outdrives can take more than 300 horsepower... but I bet you are starting to wonder what my question is?
I havn't gone out to count the teeth on the upper gear set, but I have seen that some of the old gear ratios are not the same as the new gear ratios. I would think that I cannot have mismatched ratios (even if the difference is small) right? Does that mean I will probably have to by two new drives? I also wonder from reading some of the posts... If you buy a complete drive does it come in two halve that I have to assemble? Is it easier to assemple the upper, then put the lower on next?
I also see alot of folks that don't think its a good idea to just change and upper, as the grenaded parts from the upper probably got all through the lower...
Finally, my shift cables are a little streched (you have to go slightly into forward to release reverse), this has been this way on all 3 mercrusers I have owned. I have never fixed it because I have gotten used to the additional motion and I always understood that the outdrive had to come off to replace the shift cable (I have always been a motorhead, not a tranmissionhead). Is now the time to replace the shift cables?
Sorry I got a little longwinded
REV
I havn't gone out to count the teeth on the upper gear set, but I have seen that some of the old gear ratios are not the same as the new gear ratios. I would think that I cannot have mismatched ratios (even if the difference is small) right? Does that mean I will probably have to by two new drives? I also wonder from reading some of the posts... If you buy a complete drive does it come in two halve that I have to assemble? Is it easier to assemple the upper, then put the lower on next?
I also see alot of folks that don't think its a good idea to just change and upper, as the grenaded parts from the upper probably got all through the lower...
Finally, my shift cables are a little streched (you have to go slightly into forward to release reverse), this has been this way on all 3 mercrusers I have owned. I have never fixed it because I have gotten used to the additional motion and I always understood that the outdrive had to come off to replace the shift cable (I have always been a motorhead, not a tranmissionhead). Is now the time to replace the shift cables?
Sorry I got a little longwinded
REV
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