Bore Sizes of Holt engines

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anr.red

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Any one have bore sizes of Holts .Have a powerunit,need to know size
D Abbott,Michigan

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Wed, Nov 17, 2021 1:17 AM

Deebo

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There’s a brochure in the members Technical Library that is for the 45hp, 75hp and 120hp. It says the 45hp had 6” bore and both the 75hp and 120hp had 7.5”. Hope this helps.

[attachment=65377]E5B24852-51C4-495A-A16E-25772CA59382.png[/attachment]

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Fri, Nov 19, 2021 12:31 AM

Bruce P

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My neighbors 30 horse is 5 3/8”. The 55 horse was 6 1/2”.

We would love to see pictures of your engine.

BP.

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Mon, Nov 22, 2021 12:01 PM

Bruce P

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Reply to Bruce P:

My neighbors 30 horse is 5 3/8”. The 55 horse was 6 1/2”.

We would love to see pictures of your engine.

BP.

[attachment=65415]9474472B-D584-4A49-9301-AB561BFB93A9.jpeg[/attachment]

Here is a chart from my Holt school bulletins. Hope this helps.

BP

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Mon, Nov 22, 2021 10:32 PM

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