Can someone tell me what prop they are running on a 241 offshore with 350 Magnum I/O? Recently purchased this boat and want to get a SS prop for it.
'84Offshore said:I am turning a 17" aluminum...don't think a 19" would work.
Also need to know your OD ratio, should be 1.5:1.
'84Offshore said:This is the prop......the pitch is 17". http://boatpropellers.iboats.com/Me...148-17_Propeller/773/20407/?cart_id=400066424
i get 30MPH at ~3600RPM and ~40MPH at WOT (~4500 RPM)......
'84Offshore said:I like this prop.........seems to "grip" well.
Also, I have vortec heads on my engine that supposedly adds ~30hp.........not sure if you have a Vortec engine.
The intake manifold will have 8 bolts instead of 12 if it's a vortec.
DennisG01 said:If you can tell me the engine serial number and drive serial number, I can see if I can tell you some info about both of those, including when they were first put into service - possibly and warranty service that was done, as well.
DennisG01 said:Interesting. The tag near the starter (flywheel housing) is the "hidden" serial number that many people don't know about. Using that number, that engine was made in May '97, but was not registered (sold) until July of 2000 in PA... here's the kicker... it was in a Baja Sidewinder! I think I may have actually sold that boat - the guys name sounds familiar!!!! I work part time (sales and service) at a Sea Ray dealership and we used to also sell Baja.
This is the info that goes along with that first number:
ENG: 0K278713 4350100KS MERCRUISER 350 ALPHA
DRV: 0L101059 5121200LS MERCRUISER ALPHA 1.47:1
TRN: 0L202064 6111001LS MERCRUISER ALPHA TRANSOM
Using the transom number (the second number you listed) I get this info. Produced in April of '97 and sold in July '97. It doesn't tell me the actual boat, just that it was in South Carolina and was in a "Fiberglass, pleasure, salt". Certainly sounds more like a Grady. Note the closeness of the two serial numbers - the last numbers are either a "3" or a "1" - could the tag on your flywheel housing actually have a "1" at the end, instead of a "3"?
ENG: 0K278711 4350100KS 1997 MERCRUISER 350 ALPHA
DRV: 0K241268 5010147KS 1997 MERCRUISER ALPHA 1.47:1
TRN: 0K238795 6010000KS 1997 MERCRUISER ALPHA TRANSOM
DennisG01 said:Well, the last digit definitely doesn't look like a "1". I tried with an "8" and a "0" - one matched to a Sea Ray and one to a Bayliner. It certainly looks like it could be a "3", but a "1" is the only thing that makes sense based the results - but it sure as heck doesn't look like a "1". I wonder if the engine was removed from the Baja somewhere along the line? I dunno!