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Old 07-02-2004, 07:41   #1 (permalink)
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Question Under drive pullies

Hi all.

I have been reading the past threads on the under drive pullies, in particular the Batterns one. I am just wondering those who have installed them on their windsors, what type of performance gain did you achieve (any reduction in 1/4 mile times), has anyone done a b4 and after dyno run??

Also has anyone experienced any problems with overheating?? or with any voltage problems?? is the power steering ok??

Cheers!
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Old 07-02-2004, 08:22   #2 (permalink)
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Re: Under drive pullies

I didn't do a before and after dyno, but they have been shown to give about 8rwkw difference on a stock 5.0L. I found the increase quite noticably once it was installed, revs much quicker and more pull. I did have a little drop in charging voltage, especially when idling with head lights on, but haven't had any problems with it. Overall a great mod, how else can you get 8-10kw for only $200
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Old 07-02-2004, 16:13   #3 (permalink)
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Re: Under drive pullies

what exactly r underdrive pullies an d would they have any affect on the 220 kw windsors?
regards from adam
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Old 07-02-2004, 18:30   #4 (permalink)
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Re: Under drive pullies

Quote:
Originally Posted by WILD6
what exactly r underdrive pullies an d would they have any affect on the 220 kw windsors?
regards from adam
I don't think the u/d pulleys are available for the au.
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Old 07-02-2004, 19:11   #5 (permalink)
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Re: Under drive pullies

i think that you will find that they are, as the au motor still has the same bottom end as a eb, and all the angine parts swap across from one to the other
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Old 07-02-2004, 19:57   #6 (permalink)
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Re: Under drive pullies

water pump is different to the earlier models on au, bigger hole needed in the middle of the water pump pulley......

As far as i know the au xr8 motors are already underdriven anyway....
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Old 07-02-2004, 23:39   #7 (permalink)
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Re: Under drive pullies

Yep the Au motor already has the underdrive pulleys
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Old 07-03-2004, 01:05   #8 (permalink)
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Re: Under drive pullies

I have the AU 175kw engine. how can i tell if i have the underdrive pulleys on mine!!
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Old 07-03-2004, 01:11   #9 (permalink)
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Re: Under drive pullies

All AU V8's are underdriven compare with E-series V8's.
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Old 07-03-2004, 01:15   #10 (permalink)
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Re: Under drive pullies

Nooooooooooooooooo You've dashed my hopes again!!!!!!! Hehe.

Is that to say that its underdriven to the same extent as the kits available? Sorry to be a pain in the arse EDXR8.
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