126,xxx to put on under drive or not? - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 02-17-2010
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126,xxx to put on under drive or not?

Ok, so i have a 2wd 04 ranger edge w/ the 3.0. I have 126,xxx miles on the bad boy and so far no major issues. What i was wondering if it was worth putting on the under drive pulley with this many miles? as of now I just have a K&N (stock replacement) and straight pipe (probably hurts HP more then helps).

I know it's one of the best mods for the price (which is why i want to do it), but will it lead to more issues/failures down the road?

Also I am getting 18-20 as of now what could I expect with the pulley.

From what I read/searched mpg can go both ways depending on driving style, but over all nothing significant.
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Old 02-17-2010
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You should be fine man. Thats pretty low miles from what ive heard of the 3.0's. I have heard of some kicking 300k.
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Old 02-17-2010
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Whats an under drive pulley?
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Old 02-17-2010
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a Underdrive Pulley is a smaller diameter crank pulley. The idea is less resistance thus more power. Do a search on here. because it is probably the best/most common mod for the 3.0 (at least for the price).
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Old 02-19-2010
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I just purchased mine today, can't wait for it to arrive. I will post results when I get it on.

Sean
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Old 02-19-2010
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cool sean. yeah let us know.
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Old 03-09-2010
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Well, I just got the pulley today. I will hopefully have it on in tomorrow. I will let you guys know when I do!

Sean
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Old 03-11-2010
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The pulley is on, wasn't hard to do at all! I am in love with my truck all over again, she revs smoother and I can spin the tires with out dropping my clutch! Overall, I am very happy with this purchase, I would recommend to anyone with the 3.0L

Sean
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Old 04-01-2010
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Good to see the Underdog pulley kits are working for people. I'll think I might have to buy the whole 4 piece kit next week. (Blue) of course! More hp's you know... haha
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Old 04-01-2010
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full set wont give you more power btw...crank is all you need
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Old 04-01-2010
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Quote:
Originally Posted by eddiefromcali View Post
full set wont give you more power btw...crank is all you need
thats not true at all. the full set WILL give you more power. and also, you can just buy the crank, but I'd recommend either getting a set or the crank and alternator pulley. with my truck my lights dimmed without the alt pulley.

No matter what you go with you will get an increase in power.
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Old 04-02-2010
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full set includes alternator overdrive and rest are stock size pulleys, how are you getting more power out of stock sized pulleys?
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Old 04-04-2010
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Quote:
Originally Posted by eddiefromcali View Post
full set includes alternator overdrive and rest are stock size pulleys, how are you getting more power out of stock sized pulleys?
IF i remember right a full set includes the crank, alt, and water pump/fan.
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Old 04-07-2010
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Originally Posted by 02_xlt View Post
IF i remember right a full set includes the crank, alt, and water pump/fan.
and? the crank is smaller, water pump is same size and alt is bigger (reducing hp gains). Dont understand what your point is.
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Old 04-07-2010
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Quote:
Originally Posted by eddiefromcali View Post
and? the crank is smaller, water pump is same size and alt is bigger (reducing hp gains). Dont understand what your point is.
the water pump pulley is lighter, so therefor addin hp and the alt pulley adds the chargin back so your running the same charging as you were before.
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Old 04-08-2010
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Originally Posted by 02_xlt View Post
the water pump pulley is lighter, so therefor addin hp and the alt pulley adds the chargin back so your running the same charging as you were before.
sure
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Old 04-08-2010
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I put my set on around 100k miles. No problems and I love the performance benefits.
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