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Help to identify diesel engine

Old 06-22-2020, 09:21 AM
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baronerosso
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Default Help to identify diesel engine

Hello from Italy,
I've got a lot of glow engine with a couple of diesel ones as well; I know all of them except this little diesel engine in the pictures.
Does anyone can give me any information about?
Thanks in advance, regards from Italy
Luca




Old 06-24-2020, 12:21 PM
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fps60
 
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Looks like Mills .75 Series 2
Old 06-25-2020, 01:01 AM
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baronerosso
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Hello,
many thanks for yout hint!
Looking on the web for the Mills .75 my engine look it could be the same

Thanks again
Luca
Old 06-25-2020, 03:14 AM
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fps60
 
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You are welcome
Old 06-26-2020, 10:04 AM
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baronerosso
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After a quick clean I can say that you were 100% right....it's a mills engine
Just wondering about the numbers on the crankcase (511 and 72); maybe 511 it's a serial number but 72? maybe a .72ccm version??

Thanks again for your help
Luca



Old 06-28-2020, 11:48 AM
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The numbers on the lugs are simply a serial number-the number is read 'two digit' then 'three digit' -the two digit being the batch number, and the three digit number the individual number within that batch. There is NO way of dating the engine from the serial number=other than in a purely sequential fashion....ie a higher batch or individual engine number was manufactured later than a lower one...

Your engine is missing quite a lot of carburettor parts.....

ChrisM
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Old 06-28-2020, 01:54 PM
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baronerosso
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Hello Chris,
thanks a lot for your explanation about the numbers on the lugs!
At last it should means that this engine is an orginal ones and a not a replica, am I correct about it?

Thanks again, regards
Luca
Old 06-28-2020, 03:31 PM
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Originally Posted by baronerosso View Post
Hello Chris,
thanks a lot for your explanation about the numbers on the lugs!
At last it should means that this engine is an orginal ones and a not a replica, am I correct about it?

Thanks again, regards
Luca
Yes it is an original-you are missing the tank top,tank bowl and the needle valve assembly (the needle and friction spring)-and the jet assembly itself does not look to be in particularly good condition. You would need to locate both those items to get the engine into workable condition-and the tank top (or a washer of identical thickness to the tank top) is required because the jet assembly screws into the intake from below-and the hole through the intake tube passes through the jet assembly-and is drilled AFTER ASSEMBLY-ie after the jet assembly is screwed into the air intake tube-so you cannot just screw the existing jet assembly further in till it bottoms out on the intake-the through hole will then not be aligned...so even if you want to use a Mills 75 with an external tank, you still need the tank top to remain in position. There were two distinct models of the Mills 75 mk2-the S.75 (='standard') which had a rotating cutout between the venturi and the tank, and the more commonly encountered P.75 (='popular') which dispensed with the cutout-for obviously reasons the jet assemblies on the two variants were slightly different.

ChrisM
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Old 07-04-2020, 06:39 AM
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baronerosso
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Hello Chris,

thanks a lot for all the exhaustive informations about this engine!

Regards from Italy
Luca

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