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99bludak
Dodge Dakota
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8/06/2004
17:11:46

Subject: underdrive pulleys
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Has anybody experienced any problems with lights dimming or not having enough electrical current due to the alternator spinning slower? I have read a couple of people having this problem but I would assume that their battery had to be weak not to be able to run their electrical even with the alternator spinning slower.

???



daddio
Dodge Dakota
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8/06/2004
17:20:57

RE: underdrive pulleys
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i've had an underdrive (crank pulley only)on my truck for about a year now. no probs charging or overheating. idling with everything on, lights, wipers, a/c on high & stereo and amp cranked. i have the original battery also. truck is 4-1/2 years old. '00 3.9 QC



Ken
Dodge Dakota
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8/06/2004
20:35:13

RE: underdrive pulleys
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I would only use the alternator pulley at the track, cause it will not spin up fast enough to charge your system. For me, I run a 800w amp and CB radio as well, so I decided not to go with the crank or alternator pulley. Just the crank pulley *could* be a problem depending on what accessories you have running.



jasonsdakota
Dodge Dakota
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8/06/2004
20:37:27

RE: underdrive pulleys
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can you get a steel pulley for the crank at around $60 or so. i saw old posts that said maybe. is that still on? anyone buy one recently?



matt
Dodge Dakota
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8/07/2004
01:30:16

RE: underdrive pulleys
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have your alternator checked out, it might be close to dying, underdrives aren't going to give you much power, unless you're at the end of you mods, and have little else to do.



99bludak
Dodge Dakota
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8/09/2004
10:00:14

RE: underdrive pulleys
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Ummmmmm, nothing wrong with my alternator, I don't even have an underdrive yet, just posting a question...???

Thanks for the input guys, just wanting to see what options I have to boost MPG a bit...



another mark
Dodge Dakota
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8/09/2004
20:47:20

RE: underdrive pulleys
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waste of time and money

make some REAL power and get a supercharger or NOS, stop screwing around with junk like pulleys

oh boy a whole 5-10 horsepower? whoop de do

I M not-so H O



99bludak
Dodge Dakota
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8/10/2004
09:11:47

RE: underdrive pulleys
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Well, another mark, I don't race my 4X4 truck, or do heavy duty off roading, so I don't need a supercharger or NOS, and some of us don't have $4000 to drop on a useless piece of equipment that has no benefit for us. So that is why this thread asked about the underdrive pulley, as I am looking for a little less drain on the engine and some increased gas mileage.

So, IM not-so HO take your crap somewhere else and quit screwing up my thread jackass!!



Sneezer
Dodge Dakota
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8/11/2004
14:44:22

RE: underdrive pulleys
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Settle down guys. Technically, there was nothing in this thread to suggest that you either did or did not race, off road or were looking for better mileage.

That said, underdrives will hurt the amount of electricity available. Just using the crank pulley will minimize the loss, but the gain in performance is very minimal. Using both crank and alternator will hurt your amps more. You will be fine at speed, but if you spend a lot of time in stop and go traffic, your battery will not get a proper charge. This is especially true if you have any aftermarket electrical accessories installed in your truck.

I almost bought a set of pulleys last week or so, but decided against it for the above reasons. The guy who was selling them was doing so because he was also experiencing charging problems with them installed. Hope this helps.



Tom Potts III
Dodge Dakota
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8/11/2004
22:23:20

RE: underdrive pulleys
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Hey pal, i own a 99 dak with a 5.2. I installed a 3pc underdrive set. I had charging problems and my check gauges light would go crazy, I went to autozone and installed the biggest marine battery they had, it solved my gauge problem. Still the alternator does not put anything out at idle, but no problem so far



wesb
Dodge Dakota
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8/12/2004
20:28:32

RE: underdrive pulleys
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The 3 pc. worked well on 2000 5.9, with HD chg. system. I would use the water pump and crank underdrives but leave the alt. stock to keep alt.RPM
high enough to keep at least 13v going to the battery. Add an idler if needed and use the stock belt. I can offer an install method for 2000 up if
your interested and can spend 4-5 hours to do it.
I would say a 10 hp gain is max gain, and the revs are a little quicker.
I'll have a set for sale if they won't fit the 5.7



eric
Dodge Dakota
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8/13/2004
16:59:20

RE: underdrive pulleys
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i am putting the crank pulley on this weekend and going to the track the next friday and i will tell you the gain or loss.i did the computer last week and pick up 4tenths and its spinning now.maybe 5 tenths if it hooks



99bludak
Dodge Dakota
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8/13/2004
17:10:23

RE: underdrive pulleys
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Thanks, eric, that's great, let me know if you have any problems and if you get any gains.



eric
Dodge Dakota
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8/13/2004
17:13:21

RE: underdrive pulleys
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I will let you know.



eric
Dodge Dakota
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8/17/2004
20:54:14

RE: underdrive pulleys
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havent been to the track with the pulleys on.hopefully this friday with 20th



99bludak
Dodge Dakota
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8/18/2004
09:18:46

RE: underdrive pulleys
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Have you noticed any problems since putting them on? Any charging problems or AC problems (not cold enough)??



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