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Wd propane head? |
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Zaddison
Silver Level Joined: 19 Sep 2013 Location: Moweaqua il. Points: 174 |
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Posted: 31 Dec 2013 at 1:26pm |
A guy is wantin to sell me what he says is a head off of a propane wd. I know ih guys run lp heads for more power. But the allis head is flat so is there any difference in the lp compared to the gas. If so what would a good price.
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Zaddison
Silver Level Joined: 19 Sep 2013 Location: Moweaqua il. Points: 174 |
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I'm sure they just have taller pistons to bump the compression. What I was wondering if it had any bigger valves or flowed any better its going on a 37 wc I need a head so I may have to buy it either way. Thanks.
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DrAllis
Orange Level Access Joined: 12 Sep 2009 Points: 20398 |
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Gas and LP heads on an A-C are all the same. That guy is full of it.
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56allis_msu
Silver Level Joined: 22 Oct 2013 Location: Kentucky Points: 132 |
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Allis doesn't build compression in the head. Allis builds compression in the cylinders correct Dr? Sounds like he's just trying to make money off of you.
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DrAllis
Orange Level Access Joined: 12 Sep 2009 Points: 20398 |
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If you take a D-17 and a 170 and a 175 OEM 4 inch Power Crater piston and lay them side by side, they are all exactly the same forging. The only difference is where they drill the piston pin hole in relation to the top of the piston. This is what gives the 7.25 to 1 or the 8.00 to 1 or the 8.25 to 1 compression ratio. The WD-45 piston is a little different (6.5 to 1) as the piston bowl is a little different than the others.
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