Roughly 1988 Mercruiser 4.3/LX no serial no

[bobuk]

Hi,<br />I cannot locate the serial number on the engine of my 4.3 litre/ LX thunderbolt ignition/ power steering alpha one petrol engine! There is however a transom serial number OC649870 and a drive unit number OC545197. I need to get a replacement water coolant pump and until I get the serial number I think i'm stuffed. Somone has suggested water pump number 18-3599 but how can i be sure?<br />Cheers in advance Bob

 

[achris]

Re: Roughly 1988 Mercruiser 4.3/LX no serial no

Hi Bob in the UK,<br /><br />The leg serial number was enough for me to get to the engine for you. The water pump you're after is part number -17437. There have been the same since that engine started with Merc, it's the same are a small block chevvy, The 4.3 is a 350 with the back 2 cylinders lopped off. Pistons, rods, valves, cam followers, timing gear, water pump, thermostat and housing, push rods, flywheel, spark plugs; all the same! That makes finding non-genuine parts a whole lot easier. Just beware of non-marine!<br /><br />There may be a serial number plate on the starboard side of your engine, just above the starter motor (I think). Or is that one gone too?<br /><br />The number you have been given doesn't exist. <br /><br />Oh, welcome to iBoats. <br /><br />Chris...............

 

[bobuk]

Re: Roughly 1988 Mercruiser 4.3/LX no serial no

Thanks Chris thats great!!

 

[Bondo]

Re: Roughly 1988 Mercruiser 4.3/LX no serial no

There have been the same since that engine started with Merc, it's the same are a small block chevvy, The 4.3 is a 350 with the back 2 cylinders lopped off. Pistons, rods, valves, cam followers, timing gear, water pump, thermostat and housing, push rods, flywheel, spark plugs; all the same! That makes finding non-genuine parts a whole lot easier. Just beware of non-marine!

Naw,............ It's the Front 2 ,...............<br />If it was the Back 2,.... The Dist. would be in the Wrong Place.......................

 

[rbezdon]

Re: Roughly 1988 Mercruiser 4.3/LX no serial no

I think the made two cuts and eliminated #5 and 6 from the center..... or was it 3 and 4??

 

[achris]

Re: Roughly 1988 Mercruiser 4.3/LX no serial no

Alright guys!!! You get the idea, who cares WHICH 2 cylinders were removed!!! But it couldn't have been the front 2 because then the water pump, thermostat housing and all that gear would be missing. <br /><br />Chris.............