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4 Star General
Join Date: Apr 2005
Location: Decatur, Ga
Posts: 2,159
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No filter will let more dust and dirt in the engine and mean a sooner overhaul because of wear on all the bearings and other parts.
Ryan Gill
15 Recce Re-enacting Group
1943 Humber Mk IV Armoured Car
1947 Jeep CJ2A basket case
1960 Daimler Ferret
1972 AM General M35A2
x2 M514 1Ton2Wheel Trailer
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4 Star General
Join Date: Nov 2005
Location: Denver, Co North America USA Planet
Posts: 1,330
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Bjorn,
Let me get a meter and we will compare.
And about that not running a filter but just a screen. I ran my Harley for nine years WITHOUT a foam filter. The filter that HD recommends and sells is a screen with a foam ring that's soaked in oil. I IMMEDIATELY pulled the foam ring off.
After NINE YEARS of running my HD that way, I NEVER had any problems. NOW, if you run through a 'cloud' of bugs or something, you might want to pull over and clean it off, but other than that, I NEVER had any problems. Besides, all I was trying to do was keep that LARGE pieces out of the engine.
Just my .02 as usual.
jim
OR, you could try a K&N. You might be surprised and pleased. Or not.
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Sergeant Major
Join Date: Mar 2008
Location: Schoolcraft/Michigan
Posts: 102
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Very good thread! The MF unit is pretty much maxed out in the stock form. What about putting a five tonner donaldson on the fender for BIGGER CFM? Looks nasty, IE cool as heck, and available. 
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Sergeant Major
Join Date: Mar 2009
Location: Enterprise, AL
Posts: 154
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is vacuum measured in inches of water or mercury? thought it was Hg?
Just saying that your vacuum might be even great than previously thought.
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Moderator
Join Date: Jan 2005
Location: Meadows of Dan, Virginia
Posts: 9,132
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Inches of water....
Bjorn
Virginia's Blue Ridge Mountains
(Link to PS magazines: http://old.steelsoldiers.com/index.php?name=gallery)
Avatar: XM757 in OK prepared for 1,000 mile trip home. Part of 6,000 mile journey in 2006.
1968 M49A2C modified with 1960 M756A2 truck bed and 1975 HIAB 765A knuckleboom. Heated dual tank system for biodiesel/veggie oil use.
1969 Ford XM757 8x8, 5-ton Pershing 1A truck tractor, the "improved" MV.
"Some things can't be made better, just differently......a lot of things actually"
Last edited by cranetruck; 11-07-2009 at 10:41..
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4 Star General
Join Date: Aug 2009
Location: Maryland
Posts: 1,164
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Quote:
Originally Posted by Chinookpilot77
is vacuum measured in inches of water or mercury? thought it was Hg?
Just saying that your vacuum might be even great than previously thought.
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Scientists measure small pressures in mm of mercury, which, in a fit of stupidity, was renamed Torr. Prior to mm of mercury, inches of mercury was the standard. HVAC people work in inches of water, which works out well for the pressures that normally exist in ducting, and the differentials that occur across filters.
In all of these cases, the pressure is a measure of the ability lift a column of water, or mercury. Water is much lighter than mercury, so it takes a 34 foot high column to measure the pressure of our atmosphere, where as it only takes a 30 inch column of mercury to do the same.
-Chuck
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The Following User Says Thank You to stumps For This Useful Post:
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Moderator
Join Date: Jan 2005
Location: Meadows of Dan, Virginia
Posts: 9,132
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The filter restriction gauge is calibrated in inches of water, about 20 for "full red".
Bjorn
Virginia's Blue Ridge Mountains
(Link to PS magazines: http://old.steelsoldiers.com/index.php?name=gallery)
Avatar: XM757 in OK prepared for 1,000 mile trip home. Part of 6,000 mile journey in 2006.
1968 M49A2C modified with 1960 M756A2 truck bed and 1975 HIAB 765A knuckleboom. Heated dual tank system for biodiesel/veggie oil use.
1969 Ford XM757 8x8, 5-ton Pershing 1A truck tractor, the "improved" MV.
"Some things can't be made better, just differently......a lot of things actually"
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4 Star General
Join Date: May 2007
Location: eldersburg maryland
Posts: 1,088
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i have been thinking about making custom 4 valve heads for the MF, but they would be VERY expensive. at least then you could probably get up to the 400 hp area.......
tom
tom bauer m-621
real 6 wheel drive - air lockers
real power steering - hydraulic
real fast - only .69 od in the world - for now at least
http://waterloospecialties.webs.com/
m-35 transmission expert
multifuel head gaskets, new style, $80, free shipping
avatar - 64mph @ 2400 rpm
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Colonel
Join Date: Jan 2009
Location: Texas
Posts: 264
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So to cool the intake air on a MF engine the quickest most effective mod would be to put in a 160-170 thermostat?
I run coooler thermostats in everything here in Texas. I have found a 170 thermostat in Texas will run around the same temp as a 190 thermostat anywhere north of I40.
I think I will have to find a source for cooler MF thermostats before next sommer.
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4 Star General
Join Date: Feb 2005
Location: Northern Michigan - Tip Of The Mitt - Squaw Creek
Posts: 1,462
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Quote:
Originally Posted by m-35tom
i have been thinking about making custom 4 valve heads for the MF, but they would be VERY expensive. at least then you could probably get up to the 400 hp area.......
tom
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400 HP !!
Holy mackral!
that would be awesome!
as far as being expensive--- HP always has a cost.
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