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| Big Block Talk! Everything about swapping a big block engine into your cart! |
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09-11-2014, 03:23 PM
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#1 |
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Getting Wild
Join Date: Aug 2014
Location: Joliet, IL
Posts: 76
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Vanguard block differences
I have a 18hp vanguard v twin and was wondering if the block was the same on the 12 and 14 but with a different bore. I found a bare block for a cheap price so I was thinking I'd get it bored and have a backup. Thanks
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09-11-2014, 05:13 PM
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#2 |
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Gone Wild
Join Date: Oct 2010
Posts: 6,730
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Re: Vanguard block differences
Briggs doesn't make a horizontal 12hp Vanguard as far as I know. The blocks from 14hp to 20hp are the same as far as I can tell. The difference is with the stroke of the crank, and the bore. Some blocks have a cover that accomodates a double PTO bearing, but your cover should fit. The heads will interchange without modification. The 23hp heads will also fit the smaller motors, but a different intake manifold is required. For what it would cost to have the block bored, you could find a different motor with alot of extra parts.
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09-11-2014, 05:51 PM
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#3 |
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Gone Wild
 Join Date: Mar 2012
Location: CENTRAL PENNSYLVANIA
Posts: 1,466
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Re: Vanguard block differences
they did make a 12.5 for a very short time it was a choked down 14
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09-11-2014, 05:54 PM
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#4 |
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Getting Wild
Join Date: Aug 2014
Location: Joliet, IL
Posts: 76
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Sorry It's a 14 or 16 block. Anyone know how much boring costs?
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09-11-2014, 06:21 PM
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#5 |
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Gone Wild
Join Date: Oct 2010
Posts: 6,730
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Re: Vanguard block differences
The 14/16 block can't be easily bored to accept an 18/20 piston. The steel cylinder sleeve does not have enough material to go that big.
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09-11-2014, 06:25 PM
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#6 |
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Getting Wild
Join Date: Aug 2014
Location: Joliet, IL
Posts: 76
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Re: Vanguard block differences
Ok thanks that's all I needed to know.
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