J.A.P ENGINE
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J.A.P ENGINE
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
wiganpier- I really need to post more
- Posts : 5
Join date : 2011-03-01
Age : 65
Location : orrell
Re: J.A.P ENGINE
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.
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.
Darryl Ovens- Expert
- Posts : 64
Join date : 2013-12-04
Location : New Zealand
Re: J.A.P ENGINE
Paul_Sterling wrote:
Jap Model 3 150cc is a 4 stroke.
cheers
Paul.
Thanks Paul, I had forgotten them!

Cheers
Darryl
Darryl Ovens- Expert
- Posts : 64
Join date : 2013-12-04
Location : New Zealand
Re: J.A.P ENGINE
hi therewiganpier 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
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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kevjhnsn- Life Member
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Join date : 2011-02-10
Age : 39
Location : south cheshire

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