BMC sealord parts?

[Michael48]

Hi all I’m new here, I’ve put a deposit on a 40 foot steel motor sailor, I will be sailing from Victoria to Western Australia , march to April next year, the engine is a bmc sealord, approximately 100 hp, engine number-113d98257. I know very little about this engine? and even less about where to get parts for it? As I’ll be wanting to carry spare parts for the journey, and short of cutting the deck and putting in a 150hp reconditioned lees or lehman.. I’m really hoping someone might know something about this engine or where to find parts?
can anyone help please?

[Tony Brooks]

It is a straight six BMC truck engine plus  marinisation parts. The marinisation part that you need spares for is the brass RAW water pump and its impeller.

 

If you can see any part numbs on the fuel and oil filters then any helpful motor factors in Aus. should be able to match them to those locally available. Ditto the heat exchange pressure cap. There is a good chance that one fuel filter will be a CAV 296, but post photos for identification. 296 filters were so universal they should be available locally. Engine oil would have been SAE 20w50 around API CC but SAE 15w40 around API CF or CG should do as the engine is well run in.

 

I think it is a 5.7 liter engine so looking up BMC 5.7 engine just might yield numbers for engine parts, but I doubt it. I don't know if Nuffield/BMC/Leyland ever fitted it in to tractors, but if so a vintage tractor specialist MIGHT be able to help, but it might need importing from the UK.

 

The good news is that the gear change lever on the gearbox looks like a PRM (possibly a PRM 100) but it may have its own oil filter, again a motor factors might be able to help. Just think yourself lucky the box is not a BMC DCC. Those are definitely obsolete and if one of those failed it would be a new gearbox.

[Tracy D'arth]

If the gearbox is a Newage PRM possibly PRM100, the oil filters were dispensed with as not required and PRM sell a kit to bypass it altogether.

 

This could be the same engine, Nuffield Tractor 5.7ltr    

 

[Tony Brooks]

6 minutes ago, Tracy D'arth said:

If the gearbox is a Newage PRM possibly PRM100, the oil filters were dispensed with as not required and PRM sell a kit to bypass it altogether.

 

This could be the same engine, Nuffield Tractor 5.7ltr    

 

 

That looks like the one.

[Michael48]

Thanks so much guys, I have forwarded this information to my marine mechanic in Victoria, He has said that the starter motor is grinding and that the engine runs well, I’ve asked him to change the water pump recondition the starter motor, and alternator. Replace any gaskets that are leaking, and commission the engine for the journey. I would like to carry a spare water pump starter motor and alternator and any belts and hoses? And I am also wondering if there are any common flaws/faults with that particular engine? It has been rebuilt… how long ago I don’t know? But according to the mechanic it runs really well.
cheers 

[Tracy D'arth]

The old BMC engines did run well and reliably. It will leak oil, they all do. Check the tappet ball adjuster screws, they have been known to wear and damage the pushrod cups.

When you say water pump, is there a brass fresh water pump with a rubber impeller and a cast iron pump in the front of the block? If so you need spares for both.

Timing chain tensioners wear, if you can hear the chain thrash on the over-run, check it before it breaks.

[Michael48]

5 minutes ago, Tracy D'arth said:

When you say water pump, is there a brass fresh water pump with a rubber impeller and a cast iron pump in the front of the block?

I don’t know, I’ll have the mechanic look at it and I’ll get back on that Tracy. And I will definitely have him look at the timing chain tensioners, tappet ball adjustment screws and push rod cups as well . Cheers for the valuable information though! 
so very much appreciated 

[Tony Brooks]

2 hours ago, Michael48 said:

I don’t know, I’ll have the mechanic look at it and I’ll get back on that Tracy. And I will definitely have him look at the timing chain tensioners, tappet ball adjustment screws and push rod cups as well . Cheers for the valuable information though! 
so very much appreciated 

 

It will have a brass raw water pump because I can see the heat exchanger across the front of the engine. My Guess is, based on the location on the smaller 2.2 engine, is that it will be stuck out on the front of the timing cover, in line with the camshaft sprocket that is used to drive the pump.