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Farmall & IHC Tractors Discussion Forum
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Vert. L head,Vert I head 560 660 ?

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MJF

07-28-2006 23:11:06




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I saw on tractordata that a 660 has a vertical L head and the 560 has a Vertical I head Whats the difference. Do the 660"s really just get the extra 20hp from the rpms(1800 vs 2400)
Thanks Mike




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Janicholson

07-29-2006 13:27:56




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 Re: Vert. L head,Vert I head 560 660 ? in reply to MJF, 07-28-2006 23:11:06  
From my point of remembering a traditional flathead with valves both on the same side in the block was an L head.
A T-head was found on david bradley garden walk behind units and had exhaust on one side, in block, and intake on the other side in the block(more or less cross flow)
An F head was found on Willis Overland jeeps etc and had exhaust in the block, and intake in the head Kind of a cross flow, but nor flow rated for power!!
An I head was valves in a straight line in the head C-H-M etc
A Hemi (by chrysrle's def.) is a two valve head with a hemispherical combustion chamber and cross flow (intake ports on one side of head, exhaust on the other) A hemi can also be a Porcupine head with 3,4,or more valves splayed around to max the surface area (also cross flow)
Pent roof combustion chamber= 4 valves and a two sided roof shaped chamber with t valves in each flat (earlie fifties offenhouser, and many cars today.
There are wierd units like a knight slide valve, and other configurations too neumerous to mention.
JimN

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Gary in Mozarks

07-29-2006 11:14:44




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 Re: Vert. L head,Vert I head 560 660 ? in reply to MJF, 07-28-2006 23:11:06  
The I is probably a lower case L



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K.B.-826

07-29-2006 07:38:31




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 Re: Vert. L head,Vert I head 560 660 ? in reply to MJF, 07-28-2006 23:11:06  
They have the same style of head. Just a regular overhead valve type. 660 gets it's power from the extra speed and different injection pump settings. There's a lot of incorrect info on some of those tractor sites. They try to cover so many models that they somtimes get the facts wrong.



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