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J.A.P ENGINE

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J.A.P ENGINE

Post by wiganpier on Mon Oct 06 2014, 17:14

can anyone please help i have got a jap 150cc model 3 engine only numbers i can find are 3D/702/1 anyone know what these mean please. thank you

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Re: J.A.P ENGINE

Post by Darryl Ovens on Tue Oct 07 2014, 22:09

I have a Reference Manual for JAP "stationary" Industrial Engines, but it covers 4 stroke Models 4, 5 & 6.  I can't remember the 2 stroke model numbers.  Is yours 2 stroke?

The pattern of numbers looks similar to what is stamped in the top of the crankcase on the above 4 strokes.  If they are similar, I think they are 3 = model, D = 1934, the rest I'm not sure about, maybe sub model and/or serial number.  I'd be interested in what ever anyone else can add.

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Re: J.A.P ENGINE

Post by Darryl Ovens on Mon Oct 13 2014, 20:02

Paul_Sterling wrote:
Jap Model 3 150cc is a 4 stroke.

cheers
          Paul.

Thanks Paul, I had forgotten them!    Smile

Cheers
Darryl

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Re: J.A.P ENGINE

Post by kevjhnsn on Tue Oct 14 2014, 13:24

wiganpier wrote:can anyone please help i have got a jap 150cc model 3 engine only numbers i can find are 3D/702/1 anyone know what these mean please. thank you
hi there
heres your  3d/702/1 broke down for you

3 = model 
D = YEAR  either 1934 , 1954 (but the year production runs from I.E , sept 1953 to sept 1954, the letters  always runs  in 20 yrs cycles
and im thinking that there  production was later than 1934 .
702 = engine number
1 = the spec or factory mods so this is standard

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Re: J.A.P ENGINE

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