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Discussion Starter · #1 ·
OK Duratec guys, with the help of an anonymus friend of mine, and our very own mikehawk, I'm pleased to announce the possible availability of Duratec underdrive crank pulleys! I'll post some pics so you can all see the world class quality of these, but here's some rough info to get you going. They are a 20% underdrive pulley, mounted on a modified 96-99 pulley shaft. There are prototypes made for the Gen 3 and the Gen 4, however there are no dyno numbers as of yet. Pricing will vary from $150-$250, depending on demand for the product. Keep in mind these are made by a reputable pulley vendor that produces pulleys for many different kinds of engines. They've basically done us a huge favor by making these for us.

Some facts on the construction: The pulleys are aluminum, and hard coated to guard against wear and corrosion. They are mounted to the shaft with a woodruff key, and a taper-locking collar. It's actually manufactured to military specs, which is a little overkill, but better safe than sorry!

What I would like to do is get interested (or not interested) parties to vote in this poll, which will serve to guage interest in these.

On to the pics:
 

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how easy are these going to be to install?
 
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Discussion Starter · #6 ·
Pretty simple really. You take off the belt, remove the three screws holding the pulley support onto the block, then remove the old pulley (it's a left hand thread). Then, you would install this one in its place, along with a new, shorter belt. Belt size is to be determined, however it will be one that is readily available in parts stores.
 

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Hehehe

My dealer could not do it. took them 4 hours and they said I would have to accept any damage they did before they would continue. I politely told them to put the wheel on and get the car out of the shop.


Still got billed $120.00

Finally got a small shop across the street to do it for $50.00 after I told him the bump start method of busting the bolt loose. Of course this is after he wasted a half hour with his air wrench.
 

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Umm.. not to show my ignorance of this matter, but could you give some details of the pictures. Is it a set of 3 for crank, alternator, etc? Or is it... a picture of the original compared to the UDP, if so what's the other one?

I'm totally in, I don't think I could get the money for about a month but I'm all about it.
 

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I might be interested.

Does anybody know the size or % the under drive is on the SHOShop UDP??

Since I already havw the SHOShop UDP it's a little hard to decide if I want another. As long as their is significantly more under drive than the one I have.
 
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Discussion Starter · #12 ·
The s***shop UDP is the same amount of UD as this one, give or take a couple percent.

Vulcan UDP's will be made by Dave Karpien, he's a member of this forum, and made some for the Rangers as well. I actually have the prototype in my possesion, I should have a chance to test fit it this weekend.

To clarify, the pictures show a stock Gen 3 and Gen 4 pulley, along with the new shaft and UDP. The UDP is the smaller one.
 

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Hey Bob, I'm not a G3/4 person, but I was wondering if there's any chance of making UDP's for the other accesories on the car, or would that be pointless/very hard?
 

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Originally posted by Bob Gervais@Apr 14 2004, 07:09 PM
The s***shop UDP is the same amount of UD as this one, give or take a couple percent.

Vulcan UDP's will be made by Dave Karpien, he's a member of this forum, and made some for the Rangers as well. I actually have the prototype in my possesion, I should have a chance to test fit it this weekend.

To clarify, the pictures show a stock Gen 3 and Gen 4 pulley, along with the new shaft and UDP. The UDP is the smaller one.
well, quit goofin off then.
j/k. thanks for the info.
 
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Discussion Starter · #15 ·
Please excuse my ignorance, but what use is this underdrive pulley? More HP? More Torque? Let me know. Thanks in advance
 
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Discussion Starter · #16 ·
The function of a UDP is to free up HP and TQ. Because the pulley is smaller, it's closer to a 1:1 ratio, making it easier for the crank to turn the accessories. This will lessen the amount of power needed to operate the accesories.

Pulleys could be made for the accesories, and some places have. I'll use s***shop as an example. They made UDP's for the V8 accesories that never fit correctly, due to design issues with the alternator, etc. Over the course of time, alternators and other accesories were upgraded/changed on many cars, making it difficult to make pulleys that will fit them all.

Much easier to accomplish the same task by using one crank pulley. Effectively, it does the same thing as separate pulleys.

One thing I forgot to mention also, with this style pulley, because it has the bushing, would make it very easy to make different size UDP's (for race applications, etc) and swap them out at the track. Perhaps that would be a little overkill for a Taurus, but it's worth mentioning anyhow.
 
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Discussion Starter · #17 ·
Ok cool, thanks for the responce. Im interested in anything that'll give this Duratec a little more boost. Thanks
 

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Not to hijack your thread Bob, but do you think your hookup could make an *OVERdrive* crank pulley for the 3.8 ?

Rather than going with smaller and smaller pulleys for the blower, i'd like to just use a slightly larger crank pulley and call it a day...someday.
 

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Originally posted by DMX@Apr 15 2004, 01:31 PM
Not to hijack your thread Bob, but do you think your hookup could make an *OVERdrive* crank pulley for the 3.8 ?

Rather than going with smaller and smaller pulleys for the blower, i'd like to just use a slightly larger crank pulley and call it a day...someday.
They need like a sample pulley. Just send them a stock sized pulley and tell them what you want want done, and they can make it. I think that's how it goes.
 

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Originally posted by Bob Gervais@Apr 13 2004, 09:45 PM
Then, you would install this one in its place, along with a new, shorter belt. Belt size is to be determined, however it will be one that is readily available in parts stores.
The last 3 numbers of a belt part number is the length of the belt. IIRC stock size is 747, right now I'm using 735 and the gatorback still squeals like a biotch in the 1-2 shift because of the mad duratec bling.
 
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