| From | Message |
rouseman
Dodge Dakota
12/04/2001
17:46:39
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 Subject: underdrive pulleys
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Message:
where is a good place to buy underdrive pulleys for a 3.9 and what is a good set to get?
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mwillis61
Dodge Dakota
12/05/2001
02:31:02
| RE: underdrive pulleys
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Message:
truckperformance.com has underdrive pulleys for our 3.9's for around $47.00. I'm thinking about ordering them.
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BigG
*GenIII*
12/05/2001
08:48:40
| RE: underdrive pulleys
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Message:
Are there any major gains with these pullies (are they worth the effort of putting them on) ?
2001, 3.9, 2wd, Auto, Club Cab, SLT Plus, Sport Suspension
Autolite 3923's, 180 T-Stat, Borg Warner Brass Cap & Rotor, Flowmaster Delta Flow 50 Cut In, Speedtweeks Stage 1 Kit, (Intense intake, 5.2 TB - Ported & Polished, Cable Kit & IAT Adjuster)
Long Island, New York
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DeepDak
Dodge Dakota
12/05/2001
13:49:03
| RE: underdrive pulleys
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Message:
What effort? The pulley took me five minutes to install with a new belt. Mine was quick because the clutch fan and shroud were removed, which takes an additional five minutes. A few folks have installed the pulley without removing the fan and it takes a little longer. Mine fan and shroud were out so I could install an electric fan. I don't know what just the pulley feeling like but both mods put a smile on my face!
Eli
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rouseman
Dodge Dakota
12/05/2001
16:58:32
|  engine mods.
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Message:
besides underdrive pulleys what eles is a good engine modification for the 3.9's?
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toxic13
Dodge Dakota
12/05/2001
20:10:30
| RE: underdrive pulleys
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Message:
if anyone buys the crank pulley, please, i urge you to follow in DeepDak's footsteps and REMOVE THE FAN AND SHROUD before attempting this. it's just really harsh on your wrists to bend them all backwards and sideways to remove the bolts on the face of the pulley without the fan and shroud out of the way.
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SprtTruck
Dodge Dakota
12/05/2001
21:21:27
| RE: underdrive pulleys
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Message:
Just when I thought I knew everything about my dak....LOL
what is an underdrive pulley and what does it do?
thanks all!
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Spyder343
Dodge Dakota
12/06/2001
05:11:47
| RE: underdrive pulleys
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Message:
Hi everyone. I was wondering if anyone knows if there are underdrive pulleys for pre-Magnum 3.9's. Will an underdrive pulley for a 318 work?
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DeepDak
Dodge Dakota
12/06/2001
14:56:49
| RE: underdrive pulleys
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Message:
Rouseman:
I recommend an intake kit and a performance throttle body. I felt the throttle body mod in the butt dyno. The other most "felt" mod was my gear change, which changed from 3.21 to 3.55.
SprtTruk:
The crank pulley is what drives the rest of your belt system. The pulley is attached to the engine crank (to put it simply, but not exactly), which rotates faster or slower depending your driving. The ASP crank pulley is smaller than your stock one, which lessens the drag of the belt system. The lessening of drap lets the crank spin faster, which translate to faster acceleration through the rpm band. The pulley is located at the bottom of the pulley system and its also the largest.
Spyder343:
The 318 power pulley will work for your v6 of similar years. Check with www.speedtweaks.net or www.krcperformance.com, they should be able to help you find it.
Eli
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Joe E.
Dodge Dakota
12/06/2001
23:29:02
|  RE: underdrive pulleys
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Message:
Are you saying that us Gen I people, like myself with a 1990 3.9L can use a Pre-Mag pully set thats made for the 318s? Please respond. I have been looking for a pully set for some time. Never found it anywhere. But If I can use a 318s pully upgreade, I will do it soon.
And about Electric fans. Are they worth the effort on Pre- Mag engines. My 3.9L has a K&N cold air custom intake, Edle. headers, no cat, Flowmaster duals. I want any HP I can get. Thanks yall.
Joe E.
What about Stage I Jet chips?
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mannyzamora
Dodge Dakota
12/07/2001
00:17:16
| RE: underdrive pulleys
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Message:
I installed the crank and water pump pullys and took the stock fan of my 94 v-6 dak, and I was really inpressed with the differance it made to it. the bottom end I lost when I installed a larger y-pipe was almost regained with these mods. also the engine feels way more responsive since it doesent have that heavy ass fan and clutch to turn. I am using a 14" flex-lite fan with an adj thermostat to kick the fan on at 180. I did not use the alt pully cause I have a buddy that put all three pully on GC 318 and had charging problems since day one.
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kotadude21
Dodge Dakota
12/07/2001
00:30:41
| RE: underdrive pulleys
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Message:
if you get the ASP two-pulley set do not try the alternator one, it's not worth it on the 97 or better dakota
It's pressed on and it'll the new one will ruin your alternator....it happened to me. cost me some serious cash!
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DeepDak
Dodge Dakota
12/07/2001
02:46:58
| RE: underdrive pulleys
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Message:
Joe E:
Your v6 is no different than 318 that was also offered in 90, with the exception of the two missing cylinders. If its made for a 90 318, it will work with your engine. You can also check with www.summitracing.com, they are usually very helpful. March Performance Pulleys has them for a 91, might want to give them a call and find the difference between a 90 and 91. Their website is www.marchperf.com, or maybe they can build you one. Good Luck
Eli
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Joe E.
Dodge Dakota
12/07/2001
21:08:13
| RE: underdrive pulleys
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Message:
Thanks DeepDak,
I am trying to get anything I can to increase HP. What type of increase are we talking about with the pulleys?
with the electric fan?
Thanks for the help youguys. this site is a life saver. Thanks again.
Joe E.
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bernd
*GenIII*
12/08/2001
01:15:30
| RE: underdrive pulleys
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Message:
Just remember, up to 1999 you can use the standard underdrive pulley. 2000+ models require either the two-piece (much more than $47.00) pulley or convert back to the old-style balancer and pulley (even more expensive).
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.93 @ 93.26mph
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Joe E.
Dodge Dakota
12/09/2001
23:34:16
| RE: underdrive pulleys
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Message:
Hey guys, I understand now that the 239 and 318 1990 engines are very similar and can use many of the same parts. I have a 1990 3.9L V6. I want to get a set of underdrive pullies for it. You said that there are a set of truckperformance.com for $47. Are these 1990 compatable or only Mag engines. And if not compatable with the 1990s, where can I get a set of my truck? Thanks guys.
Joe E.
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dakkid
Dodge Dakota
12/10/2001
17:17:28
| RE: underdrive pulleys
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Message:
what about for my 2000 3.9 bernd ?
does speedtweaks have one (or two or whatever)
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mwillis61
Dodge Dakota
12/11/2001
00:01:00
| RE: underdrive pulleys
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Message:
Bernd, Can you direct me to the correct pulleys for my 2001 3.9L. Truck performance website says the 47.00 pulley is for 2000 & 2001. They have 2 pulley set for 1999 and older for ~65.00. You mentioned a 2 piece pulley for mine. Please help.
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DeepDak
Dodge Dakota
12/11/2001
01:15:01
| RE: underdrive pulleys
IP: Logged
Message:
dakkid & mwillis61,
The ASP pulley website shows the same crank pulley part#(ASP504500) for 92-01 3.9Ls. The website also shows that the 00-02 5.9 and 4.7 require a new harmonic balancer/ crank pulley combo part. This is good for you guys, since changing out a crank pulley is easier than changing out a balancer. The two pulley set you saw is probably the crank and alternator pulleys. I would not recommend the alternator pulley if you have upgraded your stereo equipment and/or drive an auto. With an automatic tranny your rpms might stay on the low side depending on the driver, which drains the battery. The stereo equipment can also put an additional drain, which added to the alt pulley that raises full charge to 1100 rpms, might equal a dead battery. I've also read a few post that involved the alternator dying after the install of the two pulley set. I went with the crank pully and electric fan combo, which has given me no problems plus performance!
Speedtweaks does carry the crank pulley you guys are looking for, give them a call.
Eli
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mwillis61
Dodge Dakota
12/11/2001
05:12:00
| RE: underdrive pulleys
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Message:
DeepDak
Thanks for the info. The 2 pulley set I was referring to was indeed the crank and alternator pulleys. I was already going to avoid the alternator pulley. I just want the crank pulley for mine (4x4 and Auto.). I looked for the pulleys on Speedtweaks site but can't find them, I guess I'll give them a call. Thanks for all the info and insight, it is greatly appreciated.
Mike
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mwillis61
Dodge Dakota
12/11/2001
05:13:55
| RE: underdrive pulleys
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Message:
DeepDak
Can you give me a link to the ASP pulley website?
Thanks,
Mike
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DeepDak
Dodge Dakota
12/11/2001
17:06:24
| RE: underdrive pulleys
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Message:
The website address is: www.aspracing.com
I wouldn't purchase the pulley directly from them, you'll pay more than purchasing from a retailer.
Eli
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stealwings
Dodge Dakota
12/11/2001
18:29:54
| RE: underdrive pulleys
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Message:
I'm a little lost. The two pulley system is for a Alternater and Crank. The three pulley system is for both plus the water pump. I have the two pulley system and It did help. And I didn't have any problems getting the old one's off or the new ones on. I didn't even take my shroud off. Just move it back some. Didn't touch the stock fan. That's for a '98 Dak 3.9L. Greg
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mwillis61
Dodge Dakota
12/11/2001
23:47:20
| RE: underdrive pulleys
IP: Logged
Message:
DeepDak,
Thanks for the link.
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bernd
*GenIII*
12/12/2001
00:02:39
| RE: underdrive pulleys
IP: Logged
Message:
Whoops...my bad. (Was thinking 5.9L)
They're a single crank pulley. (Don't bother with the Alt pulley...too much of a drain at idle.)
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.93 @ 93.26mph
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mwillis61
Dodge Dakota
12/12/2001
00:24:51
| RE: underdrive pulleys
IP: Logged
Message:
Bernd, Can I get this pulley from you? Planning on making an order with you soon anyway.
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bernd
*GenIII*
12/12/2001
09:32:19
| RE: underdrive pulleys
IP: Logged
Message:
Yes, you can. :)
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.93 @ 93.26mph
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mwillis61
Dodge Dakota
12/12/2001
12:05:35
| RE: underdrive pulleys
IP: Logged
Message:
OK Bernd, don't make me drag it out of you. How much is it and whats the part # (2001 3.9L crank pulley only and different size belt if needed). I can't find them on your website.
Thanks, Mike
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DeepDak
Dodge Dakota
12/12/2001
12:34:49
| RE: underdrive pulleys
IP: Logged
Message:
mwillis61,
The part# is 50-4500 and the Napa belt part# is 945-k6 (94.5"). This applies to 1992-2001 3.9L dakotas. This information is not on the speedtweaks website, but it is accurate. Like I said, they do carry the pulley and give them a call.
Eli
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d/l dakota
Dodge Dakota
12/12/2001
13:27:54
| RE: underdrive pulleys
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Message:
I went to ASP site and they offered four different sets of pulleys. First just the crank pulley then the altinator & crank, the third had the addition of the water pump pulley. The fourth were racing pulleys. So which would be better the racing pulleys of the crank and water pump pulleys?
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Joe E.
Dodge Dakota
12/12/2001
13:37:40
| RE: underdrive pulleys
IP: Logged
Message:
HI guys, for my 1990 Pre- Mag Dak, should I get a 3 pully set or just a crank pully? I do run a stereo system in my truck and dont want to drain my battery down, so the alternator pully is not for me. But what about the crank and waterpump pullies?
Thanks.
Joe E.
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DeepDak
Dodge Dakota
12/12/2001
23:53:29
| RE: underdrive pulleys
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Message:
d/l,
The racing pulley will give you some series charging problems. The pulley is too small for daily driving, plus it might give you cooling problems (water pump underdriven). The newer dakotas have a pressed on water pump so changing it out would be a no go. The crank pulley would be your best bet, just my .02.
Joe,
You can probably get away with the crank and water pulley set (no charging problems) but the right size belt might be a problem. Once you have the two pullies installed, take a piece of string and loop it around like a belt. Then measure the string, the measurement will be the size belt you need. The correct belt length might be one rib short of the stock belt but it will work. Oh, does your year truck have an idler pulley? If so, when you loop the string the idler pulley will be completely extended, which will make your measurements too long. You might want to have a buddy push in on the idler so you can get a more accurate measurement.
Eli
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bernd
*GenIII*
12/13/2001
09:52:30
| RE: underdrive pulleys
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Message:
On any '99 and newer engines, the water pump pulley is pressed on...not bolt-on. You can't remove it without removing the water pump and putting it in a very sturdy press. (Not worth the effort as you don't want to underdrive your cooling system anyway.)
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.93 @ 93.26mph
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mwillis61
Dodge Dakota
12/19/2001
00:44:13
| RE: underdrive pulleys
IP: Logged
Message:
Ordered the crank underdrive pulley from speedtweaks along with their last IAT Adjuster today. I'll let you know how the pulley works when I get it and get it installed.
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