Mystery Engine

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Rich Lanyi
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Joined: Mon May 19, 2025 7:24 am
Vintage Karting items owned: Rupp-X, Rupp-Chaparral, Fox, Rathman Xterminator, Caretta
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Mystery Engine

Post by Rich Lanyi » Mon Aug 04, 2025 5:25 pm

Is there any way to determine what model this engine is?
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M-M__0505.JPG
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REAR
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Joined: Sat Jun 16, 2007 10:19 am

Re: Mystery Engine

Post by REAR » Mon Aug 04, 2025 7:23 pm

Mc 15

Rich Lanyi
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Re: Mystery Engine

Post by Rich Lanyi » Mon Aug 04, 2025 7:36 pm

Thanks for the info. Is there a way of telling or is it just your years of experience?

REAR
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Re: Mystery Engine

Post by REAR » Tue Aug 05, 2025 5:24 am

Is the head attached to the block or a bolt on item ?

Mark Loraine
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Vintage Karting items owned: ProX 77,McC R1,Bug Stinger Dual.
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Re: Mystery Engine

Post by Mark Loraine » Tue Aug 05, 2025 3:36 pm

If you get the 5 digit part number or the MC# off the bottom of the block in the back, that will tell me what saw this was, not a kart engine, sorry to let you down. The vintage saw guys may be interested in it, but it'll be a low price.

And yes; REAR is correct in their MC15 assessment.

Rich Lanyi
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Vintage Karting items owned: Rupp-X, Rupp-Chaparral, Fox, Rathman Xterminator, Caretta
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Re: Mystery Engine

Post by Rich Lanyi » Tue Aug 05, 2025 7:18 pm

Since it is not any good for a kart, would it be any good on a mini-bike?

Mark Loraine
Posts: 178
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Vintage Karting items owned: ProX 77,McC R1,Bug Stinger Dual.
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Re: Mystery Engine

Post by Mark Loraine » Tue Aug 05, 2025 8:59 pm

Rich Lanyi wrote:
Tue Aug 05, 2025 7:18 pm
Since it is not any good for a kart, would it be any good on a mini-bike?

Great for a fun Cart or minibike--definitely!

Terry Bentley
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Re: Mystery Engine

Post by Terry Bentley » Wed Aug 20, 2025 10:59 pm

Was this engine confirmed to be a Mac 15 saw? It has a tapered crankshaft with the early woven asbestos lined Max torque clutch. That has some serious value by itself. The block is stamped 52886A. That is the first model MC 49. It used the same block as a MC15 saw. The outer intake port was not drilled on them either. It is way more useful than just for a minibike.

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