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Tractor Pulling Discussion Forum

Moline 4206 head verses 4232

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B BARENIE

10-21-2006 20:05:05




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On a mild 403 g-moline 4.81 x 6" why would the 4232 head be of any benefit over the 4206

Besides square port and increased runner size to the back of the intake valve, is there any other great hp increases at stock rpm's ?

Also , when are the runner's to big for close to stock cubes ?

Thank's for any reply !




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LW

10-21-2006 23:26:13




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 Re: Moline 4206 head verses 4232 in reply to B BARENIE, 10-21-2006 20:05:05  
About 8-10 Hp



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B Barenie

10-23-2006 15:09:39




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 Re: Moline 4206 head verses 4232 in reply to LW, 10-21-2006 23:26:13  
L.W.
Thanks for the reply !



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ChadS

10-24-2006 09:57:54




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 Re: Moline 4206 head verses 4232 in reply to B Barenie, 10-23-2006 15:09:39  
Bud, why not go see Red? I hear he has alot of spare parts laying around,,,,, Chad



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B Barenie

10-24-2006 15:45:34




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 Re: Moline 4206 head verses 4232/chads in reply to ChadS, 10-24-2006 09:57:54  
I'm slightly tired of your attitude, as my dad tought me, respect your elders !

You never answered my question about connect rod to crankshaft ratio !
divide rod length into crankshaft stroke !

Example ! farmall 10.00" rod length divide by 5.25" stroke ? Ratio 1.9047

Now when you stroke your crank to 5.75" what is your ratio ?

Most importantly, how does this action affect piston speed, and distributor timing ?

At what limits does this lower ratio increase and or decrease low end torque ?

As far as all the enternal combustion engine's are consindered, what is an acseptable ratio for great torque and long reliability ?

Also there is an histiroic relashionship between bore and stroke !

4.125 x 1.27 = 5.2387, kind of like the farmall motor !

Moline 4.625 x 1.27 = 5.87 just like the 403 (g) motor ! (very close)
Do any mass production automobile !
Look at the science, the math !

Long story short !
Get the (f) off my hard deck !

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