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2011 ARCHIVE
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meadowfield
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Quote meadowfield Replybullet Topic: JAP engine identification
    Posted: 19 Apr 2011 at 1:14pm
Hi,

I think I have it worked out, but we have only the experience of 1 engine and don't know how the codes ever differed. So I wondering if anyone can help?

Our engine has the numbers 43/U/7242/20  stamped on the casing. It has a wipac mag - may not be original though, starts and runs perfectly. Big%20smile

From the JAP ID sites it looks like a 4/3 manufactured in 1943, but I'm a little unsure it is actually this old?

Any pointers appreciated

thanks

mark
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chriscross1966
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Quote chriscross1966 Replybullet Posted: 19 Apr 2011 at 4:19pm
IIRC JAP age numbers cycled every 20 years, so probably 1963.... Wipac mag is original fitment, flange fitting rather than base fitting. Does yours still have the Zenith 24T2 carb on it? Somehow I've wounnd up with three of the beasties, one works ATM, the other two don't but I hope top fix that sometime over the winter...

chrisc
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meadowfield
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Quote meadowfield Replybullet Posted: 19 Apr 2011 at 5:13pm
thanks,

does the model number read similar to yours?  if someone can confirm it's a 4/3 from the numbers thats a start...

mark
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meadowfield
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Quote meadowfield Replybullet Posted: 19 Apr 2011 at 5:20pm
and yes its a zenith 24t carb...
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sten
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Quote sten Replybullet Posted: 19 Apr 2011 at 7:53pm
Hi, I think the numbers 4/3 are just the model type.
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chriscross1966
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Quote chriscross1966 Replybullet Posted: 20 Apr 2011 at 9:57am
I've been poking around, it might well be 1943, the U code wasn't re-used in 1963. The military did use bucket loads of the JAP engines..... I'll try and have a look at mine tonight, I'm due some workshop time...
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meadowfield
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Quote meadowfield Replybullet Posted: 20 Apr 2011 at 10:13am
It certainly looks 40's technology and I could see any history of them making JAP engines by 63 as Villiers had bought them.

Does anyone have a similar engine with similar numbers or pictures?

thanks
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enginear
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Quote enginear Replybullet Posted: 20 Apr 2011 at 9:37pm
Will be 1943 just found another site that states a different code letter was in use by 1963 for this type of engine.
simple
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will_haggle
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Quote will_haggle Replybullet Posted: 20 Apr 2011 at 9:48pm
JAP Military engines had a separate number system, different to the civvy ones, but there is an oval stamp on the front of the cowl with a date on it. However even in wartime farmers and growers still wanted engines so they must have kept making civvy versions....
6 months ago I couldn't even spell engineer - now I are one
Calne, North Wiltshire...
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meadowfield
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Quote meadowfield Replybullet Posted: 20 Apr 2011 at 11:03pm
thanks, it seems to be confirmed then. Here a few pics of the engine in situ.

mark




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