| From | Message |
Tom J.
Dodge Dakota
JOIN HERE
4/27/2003
12:27:12
|
 Subject: Underdrive pulleys
IP: Logged
Message:
I am about to purchase an underdrive pulley for my 4.7l engine. They are for sale on www.rpmoutlet.com for $258.00 They claim 12rwhp and 26rwtq. I am waiting for them to send me the official dyno that those #'s came from. Does anyone have this pulley installed on their truck? and what kind of gains did you get perceived or real dyno #'s. I'd rather not waste my money if this is like many of the other performance parts out there for the 4.7 that do nothing except lighten the wallet. Thanx for any info.... Tom J.
|
CThomp
*GenIII*
4/27/2003
13:40:54
| RE: Underdrive pulleys
IP: Logged
Message:
You'll be the first around here to get one. I'd like to get one also but rpmoutlet never responded to an email I sent hem a while ago about the same numbers. That was a while ago though. Let us know how it goes though.
|
big_torque
Dodge Dakota
JOIN HERE
4/27/2003
13:42:54
| RE: Underdrive pulleys
IP: Logged
Message:
I bet they $hit when you asked for the dyno sheets they claim to have. Advertised HP gains from manufacturers are totally overrated. My Jet chip is worth 25 HP (they say) , yeah right. Why did I run .4 sec faster when I took it off ?
I would guess 5-8 HP for the pulley but a nice amount of torque. Keep us posted.
|
Tom J.
Dodge Dakota
JOIN HERE
4/27/2003
14:06:28
| RE: Underdrive pulleys
IP: Logged
Message:
I think they are jerking me around. A guy named George @ rpmoutlet.com told me he would scan and e-mail me the dyno #'s last monday. I have called twice since then and I am told they will get right on it but still no e-mail. Without dyno numbers to back it up, do you guys think that the hp/tq gains are there? or are we talking not enough gains to justify the possible problems of underdriving your charging system? Thanx.......Tom J.
|
CThomp
*GenIII*
4/27/2003
20:13:31
| RE: Underdrive pulleys
IP: Logged
Message:
Try e-mailing ASP themselves. You might get a better response. If they tell you they don't have the numbers then ask them how do they figure on selling any pulleys. And tell them if they can post some real numbers they'll sell a whole lot more.
|
Daktrep9298
Dodge Dakota
JOIN HERE
4/27/2003
21:49:39
| RE: Underdrive pulleys
IP: Logged
Message:
A complete set of pulley's will help a lot. The pulleys don't add power, they free up the power that is already there. Your engine will rev faster and pull harder. The stock pulleys weigh quite a bit so your reducing weight and making it easier to turn. I bet there numbers aren't too far off.
Hope this helps some
Dan
|
Jacque
Dodge Dakota
JOIN HERE
4/28/2003
11:08:15
| RE: Underdrive pulleys
IP: Logged
Message:
I would only install a underdrive crankshaft pulley myself if they offer one. Unless they offer some proof that there is no problems with charging or cooling with these pulleys. I might believe 12 rwhp on the 4.7 but, I'm not sure about 26rwtq.
|
Chris
Dodge Dakota
JOIN HERE
4/28/2003
12:02:23
| RE: Underdrive pulleys
IP: Logged
Message:
Exactly, I think that is why noone has bought and iunstalled one of these. $270 is a hefty amound for 12 HP, but it is 12 easy HP... But bring the proof and maybe we can get a GB going on it... I am always looking for more power that the wife will never know about....
Chris
|
chris allen
Dodge Dakota
JOIN HERE
4/28/2003
12:38:32
| RE: Underdrive pulleys
IP: Logged
Message:
Is it just me or does that seem really expensive for one underdrive pulley?
|
Chris
Dodge Dakota
JOIN HERE
4/28/2003
12:49:18
| RE: Underdrive pulleys
IP: Logged
Message:
It is also the vibration damper.
:-(
|
AHersh
GenIII
4/28/2003
18:24:40
| RE: Underdrive pulleys
IP: Logged
Message:
I've pondered getting pulleys for a while, but haven't gottoen around to it. I was worried it would hurt the cooling & charging of my truck.
I have friends who put the pulleys on 5.0 mustangs and felt noticable improvements.
I'm curious to hear from somebody who has a set on a Dak.
1997 CC 4X4, 5.2L Manual
DynoMax UltraFlow Muffler, K&N Drop-in, MOOG Ball Joints, Auotolite 3923's
180 t-stat, Mobil 1 in engine & all gear boxes, Rhino Lining
|
Ctdak
Dodge Dakota
JOIN HERE
4/28/2003
20:10:56
| RE: Underdrive pulleys
IP: Logged
Message:
I read in a few mags that a good estimate is 9 rwhp for every pound taken off the crank, but that doesn't include the underdrive.
|
facts first
Dodge Dakota
JOIN HERE
4/28/2003
20:33:04
| RE: Underdrive pulleys
IP: Logged
Message:
It's not a crank pulley.It's a 3peice underdrive pulley kit w/a harmonic balancer.I saw it somewhere else on the web w/the same #s.
|
CThomp
*GenIII*
4/29/2003
07:41:55
| RE: Underdrive pulleys
IP: Logged
Message:
This crank pulley will not charge at idle. It will take 850 rpm's to start the charge. At idle you will be discharging from the battery.As for the dyno sheet I can not find it. As for anyone else I do not know. If they did not work we would not make them. We have been making underdrive pulleys for 15 years.
This is an email I recieved from a tech at ASPracing.com. Basically if you do an excessive amount of idling (i.e. sitting in traffic) this pulley might not be for you. OR you could get one of those little dash mounted solar battery maintainers and get over it. If yer still paranoid get an optima battery. Optimas weigh 15lbs lighter than the stock battery anyhow. So you'd get some weight saving as well. OR just rev your engine some if you are idling alot.
|
CThomp
*GenIII*
4/29/2003
12:20:32
| RE: Underdrive pulleys
IP: Logged
Message:
If you do a lot of idling than this may not be for you. It will not kill the battery in 5 minutes but at night with the lights on and ac wide open in 30 minutes you will be dead.
A second email I got from ASPracing
|
Tom J.
Dodge Dakota
JOIN HERE
4/29/2003
12:39:25
| RE: Underdrive pulleys
IP: Logged
Message:
Not a problem... I live @ 4,000ft. elevation and I don't think I have even used my A/C much less hang out in my truck at night with the lights on. So CThomp what is your connection with ASP? Are you a rpmoutlet guy? anyway thanks for the info... Tom J.
|
CThomp
*GenIII*
4/29/2003
12:48:54
| RE: Underdrive pulleys
IP: Logged
Message:
No connection to either. I just send the right kind of emails. And alot of them.
|
Tracy H
Dodge Dakota
JOIN HERE
7/31/2003
22:56:30
| RE: Underdrive pulleys
IP: Logged
Message:
Did anyone ever buy any of these and try them out? If so, what did you pay from where and were the benefits, if any, worth it? Thanks.
~Tracy
'00 4x4 SLT QC 4.7 Auto 3.55LSD *My Dak Pics*
3" PA Body Lift, BFG AT 33x12.5x15 on AE 15x8 149's, Cranked Torsion Bars, Gibson Dual Rear Stainless Catback, Stainless K&N Clone Intake, Jeep H.O. Cams, Removed Rubber Flap, TPS @.78v, Relocated IAT, Powerslot Rotors & Hawk Pads, Autolite 3923s & Stant 180° T-stat, ProComp ES-9000 Shocks, Clear Corners, T-Rex Stainless Nerf Bars ...
Mods to be installed: 4.10 gears, Fastman 68mm TB
|
Tom J.
Dodge Dakota
JOIN HERE
7/31/2003
23:08:53
| RE: Underdrive pulleys
IP: Logged
Message:
I took the plunge and bought the underdrive crank pulley. I can't tell you how many posts i have found where people have said they have ordered or just received there pullies and never follow up with what the results are so I don't think I'm am going to say anything more.
|
Tom J.
Dodge Dakota
JOIN HERE
7/31/2003
23:29:07
| RE: Underdrive pulleys
IP: Logged
Message:
I was just kidding! But I must say I was very irritated when people don't follow up. Anyways on with the results........ I thought I could feel something immediately after the install without resetting the PCM. I don't know if i quickly have gotten used to my new found power or if it didn't exist at all. My gas mileage in town seems to have gone up .5 or better and the engine does seem to rev better but doesn't seem anymore powerful. WARNING!!!! The pulley is not easy to install. It did not fit on the crank and took some extreme measures to get it on. I am not a mechanic by trade but I consider myself one and this project was a bitch. I actually did this at a ASE certified mechanics garage and he couldn't get it on. I wouldn't give up and finally beat it on. I am having 0 problems with the charging system and the A/C works OK at idle but definitely better going down the road. I don't think the pulley is a bad idea but I'm not going to reccomend it either. I will be honest I have modded my truck with K&N drop-in, MagnaFlow 3"in/ 3"out muffler, HO cams, 70mm F&B TB, underdrive pulley, 3923 SP, 180 TS, Homebrew intake, and relocated the AIT sensor. After taking my boat up to the mountains last week I realized I have less towing power than my truck had completely stock. I'm pretty sure my muffler is the culprit but after a thousand dollars in mods I expected better. Good Luck and I'll keep you posted TJ
|
xplikt
GenIII
8/01/2003
14:31:04
| RE: Underdrive pulleys
IP: Logged
Message:
I have had my underdrive for like a year now, but I never installed it. I was going to get a supercharger and I didn't want to run it with it. But now I've scrapped the SC idea totally. I am going for the NX kit now.
So I will probably give an attempt at installing the crank pulley sometime here soon.
Tom J. I was probably one of that damn people skipping out on results. hehe. I had no results to give *shrug*
-Mike
http://www.dodgetruckworld.com/xplikt/
2002 2WD RC SLT 4.7L 5spd 3.92 LSD
MBRP Single in/out | straight piped 3rd cat | turndown tip
Full Hotchkis and RAS
Shaved emblems and antennae
150BM fan | removed clutch | HD Radiator
R/T wheels on 275/40/17 Dunlop 9000s
|
CThomp
*GenIII*
8/01/2003
14:45:27
| RE: Underdrive pulleys
IP: Logged
Message:
I'm just a chicken about buying one. I'm afraid that i'll have charging problems with all the stop and go down here in Ft. Myers.
|
Tracy H
Dodge Dakota
JOIN HERE
8/01/2003
15:51:12
| RE: Underdrive pulleys
IP: Logged
Message:
xplikt ... would you be interested in selling yours? If so, what brand, which pulley(s) and how much? Thanks
|
Joe E.
Dodge Dakota
JOIN HERE
8/01/2003
17:09:09
| RE: Underdrive pulleys
IP: Logged
Message:
Not to mention the use of AC all the time here right now. Damn its hot here. The humidity is just bad. Glad I dont work construction anymore like last year. Too hot! Later and hook us up with results on the pullies.
Joe E.
|
xplikt
GenIII
8/02/2003
23:44:29
| RE: Underdrive pulleys
IP: Logged
Message:
Nah, I do plan on using them. I am not going to install them this weekend. Too pissed. How's it go, if it has tits or tires it's bound to trouble? This time it's the former of the two.
Tires are easier, I can beat it.
-Mike
http://www.dodgetruckworld.com/xplikt/
2002 2WD RC SLT 4.7L 5spd 3.92 LSD
MBRP Single in/out | straight piped 3rd cat | turndown tip
Full Hotchkis and RAS
Shaved emblems and antennae
150BM fan | removed clutch | HD Radiator
R/T wheels on 275/40/17 Dunlop 9000s
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
