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What motor do I have here?
Hi guys, I just picked up my first boat last week and it’s a 22ft PowerPlay (Powerquest) with what I was told is a “5.0 Mercruiser making 355hp” lol. Now I know enough to know the hp number is Bs but now it’s got me wondering what exactly do I have for an engine as I know the carb’d 5.0s came in a few different hp rating. What really got me started on this is the boat seems to be having an issue, it’s topping out at 36mph at 2500 rpms with a 15x17p prop. With that prop I’m pretty sure it should be able to reach a better rpm which then leads me to believe the engine needs some work. Problem is, I don’t know which engine I have in order to start ordering parts. Heres the video showing the engine running: Thanks guys, RMH |
36 mph at 2500 rpms with a 17" prop makes no sense.
No way for anyone to tell what engine you have without some serial numbers and its obviously not original, so it could be anything. |
To be honest, I'm surprised the boat even gets on the plane if it's only pulling 2500 rpm. Something is definitely amiss. Gonna need an engine number first then do some searching, there's a few websites that can help you trace you're engine. Here's one that's worth a try. https://www.marineengine.com/parts/m...rndrive-parts/ Engine number is stamped on the block but I think even POPYACHTS would have the engine number on paperwork somewhere. Welcome to OSO. RR . |
that 5.0 is nor never will make 355 hp period. They got rid of the thunderbolt ignition set up and thru in HEI 1992 chevy truck distributor / ignition set up.
5.0 carb Merc OEM stock made 205 hp and 220 hp. Would like to meet the person whom thinks he has a 355 hp 5.0 L Merc. . |
Locating MerCruiser Serial Number Tags http://www.marineengine.com/assets/InsideView.jpg
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Time for a 454.......
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Originally Posted by BUP
(Post 4629940)
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Would like to meet the person whom thinks he has a 355 hp 5.0 L Merc. . |
Originally Posted by rak rua
(Post 4629948)
Just contact any one of the 100's of 'brokers' at POP YACHTS. :D chit they could not even tell me where the spark plugs are on a 5.0 Merc. Amazing the huge listings of boats this company has and even sells. |
Once upon a time I launched with a completely new re-power that was a total unknown in terms of what to expect speed wise . On the way to pick up the mechanic I was really impressed with the performance numbers I was getting.
The mechanic got on board and after eyeballing everything took the helm and got it up on plane . A minute later he slows back down and pulls out a small screwdriver and fiddles with the rear of the tach . My perception of great performance numbers went completely out the window . The damn tach was set for the wrong engine ! |
Keep doing your research, educate yourself, and then find a quality piece.... |
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