Identifying this Motor

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May 10, 2018 | 04:30 PM

Chris Sigo

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Cruiser

Joined: Jun 2015

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From: Olympia, WA

Identifying this Motor

Picked up a project with this motor sitting in the frame. I haven't been able to identify the manufacturer. There are no markings other than the case #"s, and no obvious identifiers. I checked the flywheels and there is only a single line and a single dot for markings.

It is not an early Ultima as I had initially assumed, I called Midwest and verified. All the casting and parts look like it is a complete motor from a maker, not put together from different brands. No marks on the heads or cylinders either.

Thanks for taking a look.

May 10, 2018 | 05:14 PM

Tom84FXST

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From: Farmington ,MS

The cases are STD...as for the rest of it...who knows...everything is polished away.

May 10, 2018 | 07:09 PM

uawman

Tourer

Joined: Jan 2008

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From: St. Louis-metro area

EVO, probably big boar due to lower fins removed and polished

May 10, 2018 | 08:35 PM

Chris Sigo

Thread Starter

Cruiser

Joined: Jun 2015

Posts: 104

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From: Olympia, WA

Quote:

Originally Posted by uawman

EVO, probably big boar due to lower fins removed and polished

So is removing the lower fins a common thing to do for big boring?

They could be OEM cylinders then, but shaved and polished?

Thanks

May 10, 2018 | 08:37 PM

Chris Sigo

Thread Starter

Cruiser

Joined: Jun 2015

Posts: 104

Likes: 2

From: Olympia, WA

Quote:

Originally Posted by Tom84FXST

The cases are STD...as for the rest of it...who knows...everything is polished away.

That they are! Thanks for the quick clarification.

May 11, 2018 | 03:39 AM

grbrown

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From: Bedford UK

The cylinder castings don't look as it they have been shaved, more likely, if it is a completey new build, that they were cast like that, then polished. Might be worth doing a search for other STD engines, to see what you can find.

May 11, 2018 | 12:58 PM

98hotrodfatboy

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From: Poolville

I thought stroker motors use those style jugs.. You can measure the stroke through the plug hole or you can pull the heads... Might be advisable to disassemble it to make sure of what you have..