Under drive pulleys not good in the heat? - Mustang Evolution

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Old 10-13-2014, 06:10 PM   #1
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Under drive pulleys not good in the heat?

I was thinking of getting BBK under dive pulleys until a friend of mine told me they wouldn't do any good in the heat. Is that true? Can someone give me advice on it because I live in Arizona and it gets pretty hot during the summer.


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Old 10-13-2014, 09:33 PM   #2
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Not sure what he means by that. I don't really think they're going to melt or any thing.

One thing I will say though is do your self a favor and save up and get the steeda underdrive pullies as the BBK ones are a piggy back system and are known to some times have issues because of the design.

If you do plan on going for the BBK pullies read up on them on sites that sell them and reviews on these forums and others as well on how to install them the correct way.


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Old 10-13-2014, 09:58 PM   #3
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Quote:
Originally Posted by The_Chech View Post
Not sure what he means by that. I don't really think they're going to melt or any thing.

One thing I will say though is do your self a favor and save up and get the steeda underdrive pullies as the BBK ones are a piggy back system and are known to some times have issues because of the design.

If you do plan on going for the BBK pullies read up on them on sites that sell them and reviews on these forums and others as well on how to install them the correct way.


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What does it mean when you say they're a piggy back system?


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Old 10-13-2014, 10:17 PM   #4
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BBK's under drive pulleys are designed that they just bolt onto your existing crank pulley instead of replacing the whole unit. Which has been know to not be the most bullet proof system of under drive pulleys out there.


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Old 10-13-2014, 10:38 PM   #5
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BBK's products are poop
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Old 10-14-2014, 07:06 AM   #6
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I took the advice of this forum and went with the Steeda pulleys. Happy I did. Instantly feel the difference.


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Old 10-14-2014, 01:23 PM   #7
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Your friend means that since your water pump is spinning slower you may experience overheating problems. Sounds like something he read on the internet from someone else who had no real world experience either. I've had pullies on all my cars and they'll idle in 100 degrees in traffic with the AC on and UD pullies and be just fine.
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Old 10-14-2014, 02:05 PM   #8
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I had them on my old truck and it would overheat anytime I sat in traffic for more than 5 minutes. I ended up putting the stock ones back on. They don't cost much so get them and try them out. If you don't like them, swap them back out and sell them.
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Old 10-15-2014, 10:46 PM   #9
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Thanks guys I appreciate the advice


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Old 10-15-2014, 11:01 PM   #10
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I put some under drive pulleys on my '95 v6. My only problem was the alternator not keeping up under high electrical loads at idle. I do a lot of driving at night. Add rain and a hot evening, running the wipers, the AC, and the headlights, my headlights would dim considerably at a stop. Even the wipers would slow a bit.

I fixed this with a custom "over drive" pulley for the alternator that a buddy of mine built on a lathe. It brought the alternator back to normal speed. No more problem.
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Old 10-16-2014, 12:07 PM   #11
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Get steeda pullies. I went steeda and they are a great mod!


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Old 10-16-2014, 03:13 PM   #12
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Steeda pulleys won't cause all these effects or will I still suffer from them?


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Old 10-16-2014, 03:21 PM   #13
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Does your car have an electric fan? (I think it came with one) If so, you won't have to worry about the overheating problem. Might have to get a beefier alternator if you run a lot of electricity, but you might not. The alternator pulley will slow the stock one down a bit.
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Old 10-16-2014, 03:48 PM   #14
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If I were to get UDP's I'd definitely go with Steeda.

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Old 10-16-2014, 04:07 PM   #15
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Steeda x2. If anything you'll need to get higher amp alt. That's it.

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Old 10-16-2014, 05:10 PM   #16
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Would a 150 amp alternator be good if I do get the UDP and get overheating problems?


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Old 10-16-2014, 06:01 PM   #17
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150 is what I went with. No issues this past summer.


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Old 10-17-2014, 02:44 AM   #18
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I never install the alt pulley on my alternators fwiw. It might give you 1fwhp... MIGHT. The crank and water pump pulleys make 99% of the difference.

On my 95 I had the BBK crank/water pump pullies and a few 12" subs in the trunk running off a Kicker amp and the lights wouldn't even dim when the bass hit and that was with the stock 130 amp alt with the stock pulley on it.
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