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Old 27-10-17, 11:01 PM   #1
Eleven
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Default Please can someone help identify my first engine?

I hope someone may be able to help me, I am new to stationary engines - this being my first acquisition - and I would like some help identifiying what it is, and what is missing.

I have been on the lookout for a small stationary engine for a little while, and found this lurking with the lawnmowers at my local council dump last weekend. I secured its release for the pricely sum of 1

I hope someone might be able to identify what it is, and what parts are missing - based on my knowledge of lawnmowers it lacks a fuel tank, carburettor and recoil starter at the very least. It appears to be a four-stroke engine, the oil is clean and the main body of it seems intact. It's clearly sat around a while as there was a lot of oxidation on the ally bits, most of which came off with a stiff steel brush.

It seems to turn over fine, and has compression as I can feel the pressure release in the exhaust stroke if I hold my hand over the exhaust and turn the engine by hand.

All the markings it has are in the pictures below. From Googling '86-13 AM' it might be a JAP Model 5 as this looks similar to what I have in front of me. Someone has also suggested that it might be a Villiers C12? Please have some pictures of what I have in front of me:

Are either these a good engine for a beginner to repair/rebuild, and what is parts availability like?

thanks in advance
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Last edited by Eleven; 27-10-17 at 11:04 PM.
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Old 27-10-17, 11:12 PM   #2
air-cooled
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Welcome to the forum Eleven.

You have a BSA engine, probably a type 420cc.

The carb is a Solex 26FHD and the magneto is a Wico Series A impulse type model A1709BZ .

Regards,
Phillip
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Old 29-10-17, 11:50 AM   #3
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Thanks Phillip! Much appreciated.

*Goes off to ebay to search for parts*
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Old 29-10-17, 11:54 AM   #4
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Better still get yourself to Oakley bring and buy next Saturday, likely to find your parts and considerably cheaper as well.

Martin P
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Old 29-10-17, 01:07 PM   #5
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Thanks, I'm afraid I've got plans for next weekend already but will look at attending the sping one. Thanks for the help though :-)
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Old 29-10-17, 04:27 PM   #6
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This is my Villiers C12 for comparison...

Villiers C12 by Robert Starr, on Flickr

Stuart.
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Old 29-10-17, 04:45 PM   #7
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Found a photo of a BSA 420 I took, (well at least that's what the board says) if it's any help?.

StokeP17_027 by Robert Starr, on Flickr

Stuart.
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Old 29-10-17, 05:31 PM   #8
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I was thinking it might be the slightly smaller 320cc?

Cheers, Steve
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Old 29-10-17, 05:44 PM   #9
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Thanks, Will the carb and magneto that air-cooled has recommended be suitable for a 320cc as well as a 420cc engine?

It looks different to the Villiers C12 that Robotstar5 has posted, the exhaust has no 'Villiers' branding on it, and the starter side (sorry, I don't know the term for this) doesn't have mesh rivetted to it. It has cutouts in the steel cowling.

Also, the nuts that hold the fuel tank retaining straps down look like the BSA example - i.e. two nuts plus the spark plug (branded Champion 8-COM) on the top of the cowling.
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Old 29-10-17, 07:53 PM   #10
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Quote:
Originally Posted by skankin_giant View Post
I was thinking it might be the slightly smaller 320cc?

Cheers, Steve
I did say it was "probably a 420cc", I didn't rule out it being a 320cc as it's very difficult to identify the differences on photographs alone, especially when the important bits are missing.


As for dating - If you look on the top of the cowl sort of diagonally between the spark plug hole and the rear bolt for the fuel tank there should be stamped into the metal, an oval mark with the letters AJH and a date. It might be faint, but should be there.

It would be useful if you let us know the serial number stamped into the crankcase right hand side.

Phillip
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