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2 vintage engines, what makes please?

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911hillclimber21/03/2020 16:37:01
175 forum posts
50 photos

p1080248.jpgp1080247.jpgp1080246.jpgTwo old engines, both without markings.

The horizontal tank motor, USA I guess

Other looks a very well made DIY engine (kit?).

Any info gratefully received!

Thank you, Graham.p1080245.jpg

Edited By 911hillclimber on 21/03/2020 16:38:33

Robin Colbourne21/03/2020 20:34:43
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778 forum posts
20 photos

The bottom one looks very similar to the 1938 Cleveland .488cid 'Tom Thumb' made by Bunch. Scroll down to the eighth picture here: 1930s Model Aircraft Petrol Engines

I'll see what I can find for the other one!

brokenenglish21/03/2020 21:33:18
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622 forum posts
30 photos

The Bunch engine is easily identifiable. If it really has no markings on it, it's a 1938 Bunch Mighty Midget.

The Cleveland Tom Thumb engine mentioned is the same engine, but it's marked "Cleveland" on the front (on the transfer port).

The one with the four-bolt head is more obscure. It looks English but that doesn't mean much. I've been collecting for nearly 60 years and I don't recall ever seeing an engine like that.

Edited By brokenenglish on 21/03/2020 21:37:43

911hillclimber21/03/2020 22:31:37
175 forum posts
50 photos

Thank you both for your replies.

Not a marking on either, though there is a lot of deep surface pitting on the transfer port, but nothing shows.

The '4 bolt head' engine I bought off ebay about 10 years back because it looked interesting, but have no details at all.

The crank case has no mounting lugs, just the 2 thin steel 'foot' brackets. most unusual mounting, and obviously not a marine engine, maybe a tethered car engine?

The wood prop seems small in diameter but certainly has some age and oil impregnation all over it.

I'll add more pics tomorrow.

It is in great condition and I'm sure would run with the ignition sorted.

Might be a good 'isolation' - 'stay at home' project for the next month!

Please keep searching for me, I have little knowledge of these early engines.

To get the 4 bolt head engine going, what will I need and where could I find the parts please?

David Davis22/03/2020 07:59:10
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3858 forum posts
741 photos

I know very little about engines of this age but I believe that the prop fitted to the Bunch engine has been cut down from a larger propeller for display purposes. Doubtless someone more knowledgeable will advise on suitable props for your engines.

Edited By David Davis on 22/03/2020 08:01:54

911hillclimber22/03/2020 09:08:27
175 forum posts
50 photos

That would be me David...

Found some other more 60's engines, nothing exciting (Enya, OS) and a brand new PAW from about 1980, newer run in it's box and tissue papers.

These things bring back memories.

Hope the experts can crack the origin of the 4 bolt head engine.smiley

911hillclimber22/03/2020 09:17:34
175 forum posts
50 photos

p1080254.jpgp1080253.jpgp1080252.jpgp1080251.jpgp1080249.jpg

Engine Doctor22/03/2020 10:53:02
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2712 forum posts
44 photos

I had a mighty midget given to me when I was kid and reckon the second engine is a Mighty Midget. I distinctly remember it had Mighty Midget engraved on the transfer port . The crank pin was loose and Alan now owner of  Weston UK fixed the crank for me . Never got it o run and cant remember what happened to it . The 4 bolt ?

Edited By Engine Doctor on 22/03/2020 10:54:20

Alan H22/03/2020 12:00:36
107 forum posts
2 photos

As others have said, the engine with the cropped prop is a Bunch Mighty Midget dating from around 1938 and designed by Dan Bunch in the USA. The other engine is a complete mystery to me, I suspect it is home made possibly from a published design and probably British.

I've been collecting sparkies for a long time and a few of my collection can be seen on my website:

vintagemodelengines.c1.biz

Your Bunch is among those illustrated.

911hillclimber22/03/2020 12:58:29
175 forum posts
50 photos

Thank you all for your interest so far!

The 4 bolt seems very nicely made to me esp if a DIY job.

The filler flap on the tank says made in Coventry, and is one of those small sealing oil caps found everywhere, sprung top.

Please keep a thought to identifying it unless it is a one-off..

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