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Serpentine Belt 4.0 to BII


truckerdawg

Well-Known Member
Article Contributor
U.S. Military - Veteran
Joined
Feb 25, 2010
Messages
130
City
GA via NC Mtns.
Vehicle Year
1990
Engine
4.0 V6
Transmission
Manual
Total Lift
4"
Tire Size
31X10.50
Looking at the hopefully attached image. Should I go with a grooved idler pulley instead of the stock smooth(seems to me smooth may slide off while grooved would keep it in place)? New 4.0 swap into 90 BII w/o AC. Thanks. There were so many different routing diagrams out there for this one serpentine belt Gates K060806-92 4.0 ranger w/o AC. 2.3 has the grooved pulley of the same diameter. Routing the belt between the idler pulley and the tensioner left the belt too loose so I routed it over the idler pulley as one Ford place had diagrammed.
 

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  • serpentine belt 4.0 2.jpg
    serpentine belt 4.0 2.jpg
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