Those of you thinking about doing crank underdrive pulley
#1
Join Date: Jun 2009
Location: Beaumont, CA
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Those of you thinking about doing crank underdrive pulley
Do it!!!! Ive had mine for a month almost and my mpgs increased by 1.5 - 2mpg. I was getting 16-17 stock. 17-18 with efan. 19-20 with efan & underdog crank pulley. Engine revs up quicker now and I can pull 5th gear longer. At this rate it will pay itself off in no time!
#8
#10
The really only time you'll have a issue is if you have a big stereo system or a lot of offroad lights that you keep on all the time.
#13
#14
What would you consider a big stereo system? I'm thinking of getting the UD pulley kit from here: 3.0L 4 Piece Pulley Combo Kit [udp30combo] - $199.00 : Underdog-Performance, The Art of Power Look at my signature area for my system specs. Would you consider that a big stereo system?
#16
Specs straight from Cruthfield:
Basslink II: •Class D 250-watt amplifier
Basslink expansion module: •35 watts RMS x 4 at 4 ohms, 50 watts x 4 at 2 ohms
By my calculations that's 250 + (35x4) = 390 on the low side or 250 + (50x4) = 450 on the high side
I can't recall which ohms it's running at.
Basslink II: •Class D 250-watt amplifier
Basslink expansion module: •35 watts RMS x 4 at 4 ohms, 50 watts x 4 at 2 ohms
By my calculations that's 250 + (35x4) = 390 on the low side or 250 + (50x4) = 450 on the high side
I can't recall which ohms it's running at.
#17
#18
hell i had a 1000 watt amp with 3 mtx 10s in my probe with just an under drive pulley and the only time it did anything was at a idle with the system turned up. it would dim my lights when the system would hit and never hurt anything when on the highway. i would run my system on a 2 hour drive home turned up pretty loud and it never dropped the batt or anything on the highway
#19
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Join Date: Jun 2009
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As far as NEEDING other pullies? You dont NEED them. You might want to get the alt pulley if you dont plan on getting an expo alt down the road. Ive got a taurus fan and @ idle, with efan on, headlights on, volts drop down to 12.3-12.5. I planned on going to an expo amp down the road so I didnt get the alt pulley. Once up to speed or even above 1K RPMs...volts are back up to normal. The rest of the pulleys are STOCK SIZE, no changes there besides cosmetics. I got a black crank pulley so it blends in nicely....cant tell its not OEM. Ive got an Optima Yellow Top, plan on doing Big 3 upgrade soon as well as Expo alt to help out with the charging, but I dont think I need it honestly, I just overkill everything I do. Got my pulley from stuffforyourranger.com!
edit: No need to take off fan if youre just doing crank pulley I think...again, I have a taurus e-fan so IDK
edit: No need to take off fan if youre just doing crank pulley I think...again, I have a taurus e-fan so IDK