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Old 08-08-17, 02:06 PM   #1
1956ld1
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Default JAP model 6 (i think)

Hi all,
I went to a rally yesterday with two engines but came back with three.
Its a Jap model 5 or model 6 ( the id plate is unreadable), I paid the man 50 euro for it. I got it home and immediately went to work taking the mag apart and cleaning the carb. The wico mag didn't spark when I got the engine due to a grounding problem but now with with a clean it has a cracking spark. I cleaned and fitted the carb this morning, fitted the mag and cut out a key that had been welded in the shaft. once I had fueled it up I reversed a Lister starting handle to start the beast. The engine has nearly enough compression to run diesel I recon so cranking it was a nightmare. eventually it started and was running for a few second before I decided to kill it before it crushed my toe. not bad for 50 quid I would say. The parts it is missing are: starting handle, fuel tank and a points cover for a wico series a mag. If anyone has these parts drop me a pm please. Im hoping that someone can date the engine by the numbers stamped in the crankcase which are :
On the back of the crankcase- 18541/2f
top of the crankcase- M6H74485/1H
rear side of the barrel- 14831F
front side of the barrel- 18654
with these numbers I hope that someone can tell me what model this engine is and what year it was built in.
I will upload pictures soon.
Kind regards,
Josh.
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Old 08-08-17, 04:09 PM   #2
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Hi Josh,

I have a number of JAP tanks in rusty but serviceable condition. What size are you looking for?
Also have old and rather battered WICO points cover.
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Old 08-08-17, 06:27 PM   #3
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Quote:
Originally Posted by woodsman View Post
Hi Josh,

I have a number of JAP tanks in rusty but serviceable condition. What size are you looking for?
Also have old and rather battered WICO points cover.
Hi,
I would think that the tank should be 6" in diameter and around the 12" long or above would fit nicely. any points cover is better than no points cover.
Kind regards,
Josh.
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Old 08-08-17, 08:48 PM   #4
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I might have a handle. What diameter of socket in the flywheel are you looking for ?

Phillip
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Old 08-08-17, 09:43 PM   #5
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If memory serves, which it does sometimes(!!) You have a Model 6 dating from 1951. The number on the crankcase top is the important one. The others, I believe are either casting or part numbers.
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Old 08-08-17, 10:03 PM   #6
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Hi Phillip,
The internal diameter of the socket is about 30mm.
Ive spent the evening cleaning up bits and pieces for restoration hence why the engine is in pieces. thinking of painting it kubota blue.
Kind regards,
Josh.
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Old 08-08-17, 10:04 PM   #7
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Quote:
Originally Posted by pulsechoes View Post
If memory serves, which it does sometimes(!!) You have a Model 6 dating from 1951. The number on the crankcase top is the important one. The others, I believe are either casting or part numbers.
thanks very much.
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Old 08-08-17, 11:23 PM   #8
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Quote:
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Hi Phillip,
thinking of painting it kubota blue.
Kind regards,
Josh.
Proper Kubota's are pink

Neil.
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Old 08-08-17, 11:42 PM   #9
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Proper Kubota's are pink

Neil.
Thats why i choose it for a jap and not a kubota
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Old 09-08-17, 08:13 PM   #10
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Hi all,
sorry for the lack of pictures, my computer will just not let me upload them unfortunately. Got the cowl primed in lidls primer filler, which for 3 euro a can has worked very well, cant do anymore painting until i get the etch primer for the aluminium and the actual paint itself. I hope to have this engine painted by the end of the week and hopefully be able to post a few pics but thats the progress so far.
Regards,
Josh.
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