Re: Engine swap issues?
Howdy C.W,
I hate to jump on the bandwagon........but I also think you said the other OMC 5 letter word (Cobra)
I'll also say that if you're thinking about getting a boat with a Cobra you must be careful too!
I thought I was "OK" with my brothers boat, (he bought it new) took good care of it, kept it inside, kept it dry, never in salt etc etc etc...
So I did not do enough home work. (I've had Mercruisers...pulled engines, drives, etc) Thought I knew what I was doing.
I neglected one TINY LITTLE thing......I had NO IDEA that OMC only made the (FORD) 7.5L engine/drive for a few years.
This one is a 1987 model year engine & drive. Not that old...
NO ONE makes the exhaust manifolds now......NO ONE..
NO ONE makes the couplers either. (LORD is the original manufacturer )
So I was stuck with "New Old Stock" or junkyard parts. Companies like Doug Russell Marine or Shorts Marine (big Marine supply companies) told me that they have not seen manifolds in over a year and they said the couplers are N/A.
I didn't investigate what other parts are not available!
Luckily for me I found a 1997 Mercruiser 7.4L eng/Bravo III and discovered (to my complete amazement!! ) that the cutout for the Bravo matches the Cobra EXACTLY ...........Even the bolt holes match up!! (need to drill two additional holes though) If I was using an Alpha I wouldn't even need to drill the two additional holes!
Also luckily for me, The cost of this job will not exceed the actual value of the boat once it's done. (well I have to exclude all the time I'm putting into the swap!!! ) If I had to pay someone to do the swap.....well ......let's just say that the boat would have to be a collectors item to make it worth it!! (assuming you could find someone who'd want to buy it!! )
If you have not bought that boat yet. JUST SAY NO!
If you did. Well you may still be able to JUST SAY NO!
Otherwise get yourself a set of correct OMC manuals. You have a job ahead of you. If you want to swap to a Mercruiser (or a Cobra) from a Stringer, you WILL have to replace the transom.
Good Luck & Regards,
Rick