underdrive pulleys worth it?? - Page 2 - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #26  
Old 07-10-2009
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im in the dark here, but what are "underdrive pulleys" and what do they do?
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  #27  
Old 07-10-2009
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Originally Posted by dixie_boysles View Post
im in the dark here, but what are "underdrive pulleys" and what do they do?
https://www.ranger-forums.com/forum2...r-results.html
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  #28  
Old 07-10-2009
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An underdrive spins the FEAD (front end accessory drive) slower. So.. your PS pump, Alt, water pump, AC compressor, and mechanical fan are all spinning slower. Up side is that your free-ing up power for the rear tires. Down side is that you run a greater risk of overheating if you sat still for long periods of time. (Which I've done with the underdrive crank pulley)

Rich
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  #29  
Old 07-10-2009
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Originally Posted by karrbass4life View Post
Since you have to remove the fan and shroud anyway I'd install an e-fan vs. those JBA headers. The e-fan will free up 5-10hp lost from the drag of the stock fan. I'd overdrive my alternator too.
I wouldn't there not neer as reliable as your belt drivin fan and those fans do fail. If your like me that drive your truck daily im looking for reliable power do the headers!
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  #30  
Old 07-11-2009
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Originally Posted by "Monster Truck" View Post
I wouldn't there not neer as reliable as your belt drivin fan and those fans do fail. If your like me that drive your truck daily im looking for reliable power do the headers!
If you do it right with quality components and not junk from autozone you'll have no problems.
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  #31  
Old 07-13-2009
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I wouldn't there not neer as reliable as your belt drivin fan...
Use OEM or high quality parts and they are MORE reliable over 150k miles.
Consider this... every new car sold in America has an e-fan.

Rich
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  #32  
Old 07-13-2009
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Id still put headers on over an Efan. Ive had both and the headers are worth it so much more than the silly Efan.

The efan has left me on the side of the road a few times, and its a PITA off roading, always worrying about it, the mechanical fan, it spins and works, i never have heat problems with it. I go out and beat the tar out of it all day and it still works, water/mud/you name it the mechanical fan can take it.
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  #33  
Old 07-13-2009
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Originally Posted by wydopnthrtl View Post
Use OEM or high quality parts and they are MORE reliable over 150k miles.
Consider this... every new car sold in America has an e-fan.

Rich
Ranger? Doubt it. I also doubt the 09 F150s have efans.
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  #34  
Old 07-13-2009
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zach, f150 and rangers are not CARS
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  #35  
Old 07-13-2009
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Originally Posted by graniteguy View Post
zach, f150 and rangers are not CARS
again so why are we wanting to put them on TRUCKS. :)


good point though.
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  #36  
Old 07-13-2009
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Don't the 4 cylinder Rangers come with e-fans? I'm pretty sure they do
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  #37  
Old 07-18-2009
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if i get my ranger back, a udp is on the future mod list..worth doing the alternator pulley as well? or gains not noticeable? loss of reliability? have stock oem radio just a add on subwoofer..considering headers as well if can find decent price ...nearly $500 for v6 headers is a rip imo
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