Underdrive pulley
#1
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Underdrive pulley
Ok so I bought a asp pulley from a buddy that is new. I want to put it on my 05 v. Anyone happen to know the belt lengths im going to need to install this?
#5
[youtube]8yE-ntzi8gc&feature=related[/youtube]
[youtube]fZGgK9dsb1s[/youtube]
these videos give a basic explanation, but it for sure frees up hp to the wheels, so the motor isnt really making any more horsepower (i dont think), but the underdrive allows more of it to the wheels, so you see a rwhp increase...
[youtube]fZGgK9dsb1s[/youtube]
these videos give a basic explanation, but it for sure frees up hp to the wheels, so the motor isnt really making any more horsepower (i dont think), but the underdrive allows more of it to the wheels, so you see a rwhp increase...
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Take a lose tape measure. It is the kind a seemstress uses (my wife happens to have one). Wrap it around the pulleys as if it is a serp belt. You can either load the tensioner to get the accurate length or not load it and subtract 3"
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#8
You will reduce the load (reduce the spinning) of / alternator / power steering and water pump. It frees up 'x' amount of horsepower doing so. notice the x is a single digit representation
Assuming we are talking about a crank under-drive pulley.
Some will get an overdrive pulley for the alternator to remove the electrical system stress of a slower turning alt. along with the under-drive pulley. You could have a 25% under-drive
You can then get a 32% overdrive alt pulley that would yield 7% gain in alt. speed.
I prefer Dampers over underdriving. but they are more $$.
Assuming we are talking about a crank under-drive pulley.
Some will get an overdrive pulley for the alternator to remove the electrical system stress of a slower turning alt. along with the under-drive pulley. You could have a 25% under-drive
You can then get a 32% overdrive alt pulley that would yield 7% gain in alt. speed.
I prefer Dampers over underdriving. but they are more $$.