OA Parts

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JERSEYMAN
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Re: OA Parts

Post by JERSEYMAN »

in the past five or six years I haven’t managed to pick up a barrel, the ones in the photo look good from the flange end but all have badly damages/missing water jackets so I don’t think you have missed the boat, the barrels have simply been unobtainable. I have sadly found myself buying a complete/incomplete/tired motors just for the barrel.

Some would shoot me for saying this but if you fitted some new rings with the correct ring gap and reassembled the motor using the old piston, use the 8:1 recommended oil mix for these motors, I’ve no doubt she would run reasonably well, not perfect but most likely acceptable, after all we are only talking 10 thou either side of the piston. I wouldn’t run her for hours but starting her up from time to time should be ok.....

On the flip side you could always get the piston welded/built up and machined down to size, pistons are easier to find so it’s not the end of the world if it all goes tits up,

I don’t believe this is a lost cause, there are several methods of repair, some better than others.
Horsley-Anarak
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Re: OA Parts

Post by Horsley-Anarak »

Sadly replacement barrels are hard to find, don't forget we are playing with 80 plus year old engines and will be lucky to have one that runs.

But never say never, I bought this one a couple of years ago to resurrect an engine that I thought was a no hoper.
new cylinder.jpg
20180405_191322.jpg
They do crop up when an engine has a duff gearbox, Marston register has a wish list. There does come a time where breaking one engine for parts benefits many.

But I do think in your situation Bruce I would go for making a new piston.
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Collector Inspector
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Re: OA Parts

Post by Collector Inspector »

Thank you gentlemen

Piston it is then agreed.

I have an option using the original piston and not many options left for the barrel so....

I will keep you all informed in due course. Of course.

I appreciate every input guys!

BnC
A chicken is one egg's way of becoming others
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Oyster 49
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Re: OA Parts

Post by Oyster 49 »

Interesting subject, firstly re the piston, could it be that the same pistons were fitted to other villiers engines? Such as stationary, lawnmower etc? Worth checking?

I’ve been thinking about the issue of cylinders, could an option be to cast an aluminium blank, Then machine the bore to create waterways and then fit a liner?

Both my mallard engines have that arrangement.
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JERSEYMAN
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Re: OA Parts

Post by JERSEYMAN »

Not pretty, dead 78cc barrels
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JERSEYMAN
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Re: OA Parts

Post by JERSEYMAN »

Not to mention
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JERSEYMAN
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Re: OA Parts

Post by JERSEYMAN »

And then onto my current project and still undecided on what to do...
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Collector Inspector
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Re: OA Parts

Post by Collector Inspector »

I see what you mean JM

I am very lucky to have a barrel with no rust problems aye.

I am going to PM you with something that may be of use. Gearbox part.

Cheers all and

Regards

Bnc
A chicken is one egg's way of becoming others
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Collector Inspector
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Re: OA Parts

Post by Collector Inspector »

I have a possible solution...

Back in my other life (being young and fit) I frequently damaged motorcross and enduro bike barrels.

They were repaired using the Electrosil Process. Details this link. https://www.electrosil.com.au/

They were open cylinders not closed like my problem one. Very deep scoring could be rectified.....I mean drop a gudgeon clip kind of thing.

I will contact them to enquire.

I am sure cheaper than a remake piston which can be done as last hope.

At the end of the day it will be run on a transom.....bucket list #1.

Soorry the spleng and

Regards

B
A chicken is one egg's way of becoming others
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Collector Inspector
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Re: OA Parts

Post by Collector Inspector »

Contacted the above...no joy as they can not service a blind cylinder.

OK let me win lotto or finish another car project then remake a piston to suite. In Australia.

Sigh

B
A chicken is one egg's way of becoming others
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Charles uk
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Re: OA Parts

Post by Charles uk »

Bruce when these motors left the factory I can assure you the cylinder fitted the crankcase perfectly!

It either got broken or the parts got shuffled up, if you send me good pictures, in privately or in public I might be able to tell you where your problem lies.
Make it idiot proof and someone will make a better idiot.
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Oyster 49
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Re: OA Parts

Post by Oyster 49 »

Is this worth looking at Bruce? oversize to standard diameter, and looks similar. Could it be the same, or a ver similar piston, that could be machined to make it fit?
https://www.ebay.co.uk/itm/125723892288 ... R5S0yryDYw
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