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Author Topic: 1 inch crank?  (Read 4865 times)

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Offline joedirt

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1 inch crank?
« on: April 13, 2007, 12:30:43 pm »
hey i got a 50s firestone mower and its got a 5 hp bottomshaft briggs.the thing is - its got a 1 inch crank! i have never seen a 5 hp with a 1in crank. i was wondering if it would be possible to put the crank out of a 8hp briggs in this engine?
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Offline crocco58

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Re: 1 inch crank?
« Reply #1 on: April 13, 2007, 02:30:56 pm »
No don't do it. Almost all 8 hp Briggs come with a 1 inch crank anyways.
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Offline joedirt

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Re: 1 inch crank?
« Reply #2 on: April 13, 2007, 04:00:47 pm »
yea i know that but if u put in an 8 horse crank the stroke should be longer and it would be a stroker 5 horse!
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Offline SeanStanley

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Re: 1 inch crank?
« Reply #3 on: April 13, 2007, 04:03:40 pm »
but why waste your time "suping" up a 5 horse, when you could be working on that 8! :bash:   
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Offline lil_mule10

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Re: 1 inch crank?
« Reply #4 on: April 13, 2007, 05:11:37 pm »
Quote
but why waste your time "suping" up a 5 horse, when you could be working on that 8!

He does have a good point...thats pretty much pointless don't you think so??
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Offline Squidd

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Re: 1 inch crank?
« Reply #5 on: April 13, 2007, 06:40:28 pm »
Yup..
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Randy Stys
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Offline Ford Fever

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Re: 1 inch crank?
« Reply #6 on: April 13, 2007, 11:45:02 pm »
its only useless if you plan on using the engine. If its just for a project,go nuts you'll learn lots and have a cool little project engine.
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Offline mowdak1

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Re: 1 inch crank?
« Reply #7 on: April 14, 2007, 01:53:29 am »
Yup!!
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Offline joedirt

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Re: 1 inch crank?
« Reply #8 on: April 14, 2007, 02:23:36 pm »
yea half the reason to build it would be to see how it would turn out.and if that crank brings the piston up to zero deck or higher itll have alot more compression than any 8 horse and then with the right cam and a tuned carb , p&p ,and a few other tricks it should have more than 8 hp!
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Offline mowdak1

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Re: 1 inch crank?
« Reply #9 on: April 14, 2007, 02:27:07 pm »
What are you doing typing, go get busy building it!
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Offline joedirt

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Re: 1 inch crank?
« Reply #10 on: April 14, 2007, 02:32:26 pm »
yea your right but im not at home and its raining like h!@# here anyway (barn roof leaks) so not much to do today!
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tractorman

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Re: 1 inch crank?
« Reply #11 on: April 14, 2007, 05:04:10 pm »
most 8 and 10 horsepower motors came with 1 inch cranks. Actually for a fact if you can find a 10 crank you can stroke you motor and get some more horsepower out of it. 1.523 is the size of a 10 crank
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Offline Squidd

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Re: 1 inch crank?
« Reply #12 on: April 14, 2007, 06:44:27 pm »
22 series 10 crank has "shorter" throw than 19 series 8....
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Randy Stys
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