Removing Airpump for power
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
I think you had better try that again, there is no-way.
Senior User
Joined: Jun 2006
Posts: 122
Likes: 0
From: Kamloops BC
I didn't think so either until I printed the drawing and put a clockwise arrow on the crankshaft and a counter -clockwise arrow on the waterpump on each version. I then put arrows on the belt following the direction of the crankshaft and the waterpump goes the correct counter clock-wise direction each time. Visually it doesn't look right, but with the arrows being drawn on it works.
(Not meant to start anything here.) BTW my truck is still running great after the ECT fix you guided me to. Thanks again!
(Not meant to start anything here.) BTW my truck is still running great after the ECT fix you guided me to. Thanks again!
Lead Driver
Joined: Nov 2002
Posts: 9,557
Likes: 44
From: Concord, NC
Thanks for posting the belt lengths. That's some good information that hopefully will save someone some time.
It doesn't matter what side of the water pump that the belt rides on, as long as it crosses over between the crank pulley and the water pump pulley. All the diagrams posted above have the water pump turning in the same direction - opposite of crankshaft rotation.
It doesn't matter what side of the water pump that the belt rides on, as long as it crosses over between the crank pulley and the water pump pulley. All the diagrams posted above have the water pump turning in the same direction - opposite of crankshaft rotation.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
I didn't think so either until I printed the drawing and put a clockwise arrow on the crankshaft and a counter -clockwise arrow on the waterpump on each version. I then put arrows on the belt following the direction of the crankshaft and the waterpump goes the correct counter clock-wise direction each time. Visually it doesn't look right, but with the arrows being drawn on it works.
(Not meant to start anything here.) BTW my truck is still running great after the ECT fix you guided me to. Thanks again!
(Not meant to start anything here.) BTW my truck is still running great after the ECT fix you guided me to. Thanks again!
Senior User
Joined: Feb 2008
Posts: 487
Likes: 0
From: Jackson
I bought an "off road idler pulley" from California Mustang. I put it on my 1995 f-150 351W. All i had to do was buy an inch shorter belt and it runs great. Bolts right on. The belt size needed was a 101 inch belt. can send part numbers if needed. Pulley costs around 50.00 and the belts another 20.00. Had to remove my air pump because it froze up and broke my tensioner. i replaced all idlers while i was there. Also plugged the vaccum lines thanks to the forum on it. Truck runs better than ever.
New User
Joined: Jan 2011
Posts: 1
Likes: 0
I just went through this ... 351 5.8 1990 F350 4x4 removed Smog pump
91" Belt perfect fit everything runs in the correct direction ..!
The Southernmost Mod
Joined: Dec 2004
Posts: 6,902
Likes: 20
From: Caracas, Venezuela
If it's working, leave it alone, my MPG took a turn for the worse when i took my air pump out (i can't find a spare one around here). I also got no gains in power at all. Avoid this mod.
Junior User
Joined: Feb 2010
Posts: 98
Likes: 0
This MOD wouldnt be bad if their was a was a way to flash our ECU so that the ECU would compensate for what is no longer their and run efficiently. i lost 2 miles per gallon on my 460
Front tank was getting 12mpg now get 10
Rear tank was getting 10 now get 8.
Mario
Front tank was getting 12mpg now get 10
Rear tank was getting 10 now get 8.
Mario
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Postmaster
Joined: Mar 2008
Posts: 2,703
Likes: 7
From: Des Moines, Iowa
x2... if it works leave it alone. No HP to be gained...
Senior User
Joined: Dec 2010
Posts: 295
Likes: 1
From: Ca.
AS long as the water pump continues spinning the same direction as the factory setup, it's O.K. If the water pimp is spinning the opposite direction, cause of belt routing, then a water pump from an earlier model will be necessary. Look for a year that the pump pulley was driven by a V groove belt. Those all went clockwise as one faces the front of the motor.
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