Crazy Jay Posted March 15, 2015 Report Share Posted March 15, 2015 Hi all, I have a 1.5 bmc that I got with my new boat(actually its out now and its old)but in the interest of heritage and I'm a bit of a nerd I wonder if anyone knows how to interpret the engine number? The numbering system found online seems to make no sense to the number I have The number is BHM1115-RS75969 and clearly has 1500 cast on the side any thoughts greatly received Thanks J Link to comment Share on other sites More sharing options...
Troyboy Posted March 15, 2015 Report Share Posted March 15, 2015 I've got a BMC 1.5 diesel engine in my boat . The engine number is 15 JH UD 6807 . This means it is 1500 cc, J = commercial vehicle engine, U = the vehicle it was fitted to had a central gear change gearbox D = diesel and 6807 is the actual engine number. Hopefully someone will be along shortly with an engine number similar to the one you have to throw some light on it . Link to comment Share on other sites More sharing options...
The Ents Posted March 15, 2015 Report Share Posted March 15, 2015 BHM1115-RS75969. Hi J. From 40 year old memories, BHM1115 is a British Leyland reconditioned engine parts number. You would use this number to order one from stores.They were available as a Gold Seal replacement engine or Silver Seal engine. This engine was a Reconditioned Silver Seal unit number 75969. The Gold Seal units featured new cranks and castings, and so were almost new, the Silver Seal units were rebuilt, so the cranks would be ground and the blocks bored to an undersize. The Silver Seal units were competitively priced, we couldn.t build an MGB engine for the price at the time. You may fins some silver aerosol paint on the engine somewhere. If I remember correctly....... Mike Link to comment Share on other sites More sharing options...
Crazy Jay Posted March 16, 2015 Author Report Share Posted March 16, 2015 Hi guy's Thanks for responses makes sense now why I couldn't make sense of the number There is some silver ish paint left on it cheers J Link to comment Share on other sites More sharing options...
Crazy Jay Posted March 16, 2015 Author Report Share Posted March 16, 2015 After a bit of online digging now I know what i'm looking for I found on a mini website that: prefix BHM is gold seal and RKM is silver seal factory recon unit it makes sense if its to be believed also found that metallic blue paint was specifically for marine use if it helps anyone else stumped by their engine number J Link to comment Share on other sites More sharing options...
wrisberg Posted June 22, 2015 Report Share Posted June 22, 2015 (edited) Hello in here. I have a 1.8 ( stamped on the crankcase ) bmc diesel engine. I am currently working on it, and would like some info on the year and place of the build, England / turkey. I would vedby much appreciate some info, if possible. On the top end, between the injectors, there is : H1024& marked in it. On the engine there is a plate with the following: 18V/744B/D 8355. There is also a casted number on the block : 63HIII. Seller informed me it was a 1988. Any information is much appreciated. Kind regards, Jonas Wrisberg, denmark Edited June 22, 2015 by wrisberg Link to comment Share on other sites More sharing options...
wrisberg Posted June 25, 2015 Report Share Posted June 25, 2015 Seems like it's hard to come any of closer to the year of the build, from the numbers. Well, then so be it. It doesn't make any difference though. Jonas Link to comment Share on other sites More sharing options...
Southern Star Posted July 2, 2015 Report Share Posted July 2, 2015 Having read this thread, I'm wondering what information is contained within my engine number? The Power Unit Registration Certificate is handwritten and a bit hard to read, but looks to be 15/ B (or might be R or P) /785 B/D 5021, the Manufacturer's Machine No. is 4686 and the Manufacturer's Model No. is CT 40 KC.. Link to comment Share on other sites More sharing options...
cereal tiller Posted July 2, 2015 Report Share Posted July 2, 2015 Having read this thread, I'm wondering what information is contained within my engine number? The Power Unit Registration Certificate is handwritten and a bit hard to read, but looks to be 15/ B (or might be R or P) /785 B/D 5021, the Manufacturer's Machine No. is 4686 and the Manufacturer's Model No. is CT 40 KC.. CT Marine marinised the B.M.C. Engines in the 70/80's the 40 likely refers to horse power and KC Means Keel Cooled(suitable for skin tank application on Inland waterways craft) CT Link to comment Share on other sites More sharing options...
Southern Star Posted July 2, 2015 Report Share Posted July 2, 2015 Many thanks for the info, the engine was supplied to CT Marine, so that makes perfect sense. Could I ask exactly what CT Marine would have done to the engine as supplied by BL in order to marinise it? Link to comment Share on other sites More sharing options...
cereal tiller Posted July 2, 2015 Report Share Posted July 2, 2015 (edited) Many thanks for the info, the engine was supplied to CT Marine, so that makes perfect sense. Could I ask exactly what CT Marine would have done to the engine as supplied by BL in order to marinise it? Fit marine reverse gear Bell housing plus specified transmission unit Sometimes an additional "Weight plate" was added to the Flywheel to smooth out oscillation at low speeds Fit right angled Engine Feet to Suit Pedestal anti vibration Mounts,both fore and aft. Remove Vehicle Exhaust Manifold and replace with a Water cooled version,if the Engine was an indirect cooling type the Manifold /Heat Exchanger would have a Tubestack installed Fit brackets to allow morse/teleflex 33c cables to be used for speed,engine stop and reverse gear control. Fit engine sump drain pump for oil extraction And finally,Paint it RED! eta change inlet manifold ,usually for an Alexander mesh filter type CT Edited July 2, 2015 by cereal tiller Link to comment Share on other sites More sharing options...
Southern Star Posted July 2, 2015 Report Share Posted July 2, 2015 Again, thanks for the info, it all makes perfect sense, other than the fact that the engine isn't painted red. Has it been re-painted by an owner in the past, or is there some other reason for the colour? (I've replaced the breather cap since I bought it (this was one of the brokerage photos), I'm assuming the engine has been repainted as I can't imagine the breather cap hadn't been replaced since the boat was new (1987)) Link to comment Share on other sites More sharing options...
cereal tiller Posted July 2, 2015 Report Share Posted July 2, 2015 Again, thanks for the info, it all makes perfect sense, other than the fact that the engine isn't painted red. Has it been re-painted by an owner in the past, or is there some other reason for the colour? (I've replaced the breather cap since I bought it (this was one of the brokerage photos), I'm assuming the engine has been repainted as I can't imagine the breather cap hadn't been replaced since the boat was new (1987)) The breather cap may be original,The BMC'S used these to expel condensation from the Rocker cover which would be produced during warm-up,the main Crankcase venting was carried out by a tube and oil separator on the camshaft cover,during marinisation this tube was fed to the intake Manifold so as to scavenge fumes from Crankcase and prevent them from entering the engine bay. My 1977 BMC 2.5 is still providing Yeoman service after 40 years of (sometimes) Rather brisk River work. P.S. BMC never provided engines for Cement Mixers! Coat? CT Link to comment Share on other sites More sharing options...
David Mack Posted July 2, 2015 Report Share Posted July 2, 2015 Again, thanks for the info, it all makes perfect sense, other than the fact that the engine isn't painted red. Has it been re-painted by an owner in the past, or is there some other reason for the colour? I thought red was the colour used for factory reconditioned engines. Vehicle engines were usually dark green, but I seem to recall that CT painted all their engine marinisations in that metallic lighter green. Link to comment Share on other sites More sharing options...
cereal tiller Posted July 2, 2015 Report Share Posted July 2, 2015 (edited) I thought red was the colour used for factory reconditioned engines. Vehicle engines were usually dark green, but I seem to recall that CT painted all their engine marinisations in that metallic lighter green. Yes, you are correct,the KC versions were Green and the Indirect versions were Usually Red? Well spotted. CT ETA,or,am i thinking of WaterMota engines? Edited July 2, 2015 by cereal tiller Link to comment Share on other sites More sharing options...
Southern Star Posted July 2, 2015 Report Share Posted July 2, 2015 The breather cap may be original,The BMC'S used these to expel condensation from the Rocker cover which would be produced during warm-up,the main Crankcase venting was carried out by a tube and oil separator on the camshaft cover,during marinisation this tube was fed to the intake Manifold so as to scavenge fumes from Crankcase and prevent them from entering the engine bay. I'm just surprised that the breather cap seemed to be painted the same colour as the rest of the engine, this suggested to me that it had never been replaced. I spent my earliest motoring days driving cars fitted with BMC B series engines, Austin A60's and the like, and I always changed the breather cap as a service item? Link to comment Share on other sites More sharing options...
les trickett Posted March 12, 2019 Report Share Posted March 12, 2019 My engine number is 15V/160B/D10033 WITH A3J8 In the casting if anyone can show some light. I need a gasket kit. Also the front side inspection cover has a metal tube coming out of it. Does anyone know if the pipe from the rocker cover is supposed to go on it. It is a marine engine Link to comment Share on other sites More sharing options...
Shal Posted April 11, 2022 Report Share Posted April 11, 2022 Hi I am new to this group. Intrigued by the way the engine numbers tell a tale. Would be really interested to know if anyone out there could work mine out for please. 15P/752A/D not sure if there is anything after the D. She is in an early 1970s norfolk broads hire boat "Falcon 26" Link to comment Share on other sites More sharing options...
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