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CJ
Dodge Dakota
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12/09/2002
15:46:27
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 Subject: Alternator?
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I have a 97 SLT ClubCab....and the stock alternator is 117 amps...but since I have the "heavy duty electric" does that mean I have a bigger alternator?...if so how many amps is it?
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Demon-Xanth
Dodge Dakota
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12/09/2002
15:52:27
|  RE: Alternator?
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In my '02, I believe the HD package came with a 130A
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Demon-Xanth
Dodge Dakota
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12/09/2002
15:57:50
| RE: Alternator?
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I double checked, 117A Alternator w/ 600CCA battery is standard, and 136A alternator w/ 750CCA battery is included in the heavy duty service package.
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hardbody
Dodge Dakota
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12/10/2002
23:40:04
| RE: Alternator?
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Does anyone know what the alternator is rated in a 2001 with the 4.7? I have the optional towing pkg if that matters. Also will any of the other alternators that dodge uses ( say from the ram) work in the dakota and do they put out more amps? Thinking about getting a amp for my CB and may need some more amperage. Thanks
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Demon-Xanth
Dodge Dakota
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12/11/2002
09:59:55
| RE: Alternator?
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The alternators are the same rating on all the engines, considering that a normal car alternator is only rated at 70A or so, you're probably okay with either the 117 or the 136A alternator. If you need more amplification than that, you're not just slightly illegal with that CB, but you're going to fry front ends of whoever's listening. iirc, the FCC has a 5W limit on CB power, but doesn't enforce it, 20W linear amps are fairly common around here.
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Todd
Dodge Dakota
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12/11/2002
12:50:43
| RE: Alternator?
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I ran a fairly high output cb system a few years back with just a dual battery setup,and at the time,I was driving an 87 nissan stanza with the stock alternator,I'm sure it was no more than 80 to 90 amps.I was running a Galaxy radio,Texas Star mod v plus modulator,into a Texas Star dx 1200.The wattage output was only about 1595 watts over the limit,hehe,the dual battery system didnt even sweat it.If you have room,get an isolator,and another battery,you should be fine.
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Demon-Xanth
Dodge Dakota
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12/11/2002
14:12:39
| RE: Alternator?
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1600W? Damn, make sure I never touch your antenna when you key it up.
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hardbody
Dodge Dakota
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12/11/2002
19:06:50
| RE: Alternator?
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Actually the legal fcc limit is 4 watts on am and 12 on ssb, I'm looking at an amp that puts out around 600 or so, it has a current draw of 45 amps with a maximum of 100. Mr current radio is doing about 150 watts but I need more power !!!! LOL
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Demon-Xanth
Dodge Dakota
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12/12/2002
10:15:01
| RE: Alternator?
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Must be a class A amplifier, that's only about 50% efficient. (class Bs are closer to 70%, but are suseptible to crossover distortion) The 117A should be enough under most cases, but if you plan on having a trailer you're going to want the 136A. Someone out there probably does sell a 200A alternator for the current Dodge trucks, I know they sell them for older GM applications. The dual battery arrangement is a good idea, as well as beefing up the cables a bit to handle the extra sustained current load.
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Todd
Dodge Dakota
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12/12/2002
10:58:27
| RE: Alternator?
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Yeah,very good idea.The stock cables coming off the alternator are one of the first things to replace among car audio enthusiasts(I know one or two of them,:),)Here are some sites to check out:www.powermaxx.com,www.bestamericanind.com/car_alt.htm,www.zena.net/htdocs/alternators/alt_inf.shtml,www.emarine.com/www.palcoelectric.com,www.mean-green.com,www.alternators.com
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HARDBODY
Dodge Dakota
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12/12/2002
17:03:53
| RE: Alternator?
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Just for anyone's info, wrangler power products sent me an e-mail saying the have a 180 amp alternator for the new ( gen 3 ) dakotas, bad thing is they're expensive retail with the pulley $720!!
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sandman
Dodge Dakota
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12/12/2002
21:02:28
| RE: Alternator?
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voltage X current draw= peak watts. This is a minium if your amp is not 100% effecient then the draw goes up. You must also find out what refference voltage was being used and what type of signal was be input and what was comeing out. Alot companys will use 16 Volts to rate their amps and induce alot of harmonics to trick the meter. If you use 12 volts as the nominal input voltage of 12 volts you get a peak of 540 watts. If you use .702 for RMS refference under ideal conditions you are loking at a RMS of 372 watts. If you want it to run cool and not blow componets ever couple of mounths you are looking at 300 watts real world with long life and low amount of harmonics. You will notice you first real improment of about 1 S unit at 600 watts RMS. The next noteable improvment is seen at 1200-1500 watts. You have to double the watts each time to get each additional s unit. If you get a class AB for sideband use you will see much greater improvments in performance on side band. The most popular linear amoung serious 11/CB meter operators on a budget is the 667. If you run an export radio then the 500HD is basicly the same amp minus the driver. You should look into a set of deep cycle batterys and a high current automotive switch. You realy do not need an isolator with the deep cycles because you do not charge them until they are dead.
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hardbody
Dodge Dakota
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12/12/2002
21:48:27
| RE: Alternator?
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The amp I'm looking at is a magna force 600 it's a class b amp, my radio is a rci 2970 so no driver built into the amp is needed
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Demon-Xanth
Dodge Dakota
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12/13/2002
09:24:54
| RE: Alternator?
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The conversion from peak to RMS is 0.707, not 0.702. (basically, 1/(sqrt 2))
And I'm not sure if CB amps are spec'ed like audio amps. But if they are, they are spec'ed almost always in peak. And depending on the internal power supply in the amp, the rated source amperage very well could be an average figure. There's nothing keeping them from changing the voltage of the main power lines in the amp to a higher voltage, nor is there anything keeping them from filtering the supply lines themselves. The 12V from a car is notoriously bad when it comes to being a stable signal.
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sandman
Dodge Dakota
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12/13/2002
23:15:19
| RE: Alternator?
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CB amps do not have regulated power supplys and do not use mofet or hexfet transistors they are linear and are not very effecient at all. I was being generious with my math just to keep it simple. CB amps are very crude and low grade but if they are set up right can be made to sound decent and perform just not very effeciently. When these companys rate them the inject a 1000 cycle test tone and over drive the heck out of it to creat a bunch of harmonics. The harmonics are junk and do not do anything for the end product but the test meter will pick them up and add them to the total makeing it appear like the amp is realy putting out some power. Amplifers are illegal for CB's so the entire industry is based on grandfather clauses and the converison of eguipment ment for Amature market to operate on CB freq. The really nice stuff is all amature equipment. These use top shelf mosfet regulated power supplys, computer controls of the entire unit based on freq., temps, loads... Some use ceramic tubes.... The true Amature gear is very expensive. I have a first Generation 2950 with a DX 100 Kit built onto the chasis and controlled by the RF output. I bought my 2950 from AES in 1991. I also own a Lincoln, a Yaseu, Kenwood and some icom gear. Voltage on a linear amp is controled by input voltage their is no interanl regulation. Even with you 2970 RF control turned down to zero you will probably over drive that amp. You are going to have to adjust your output to match the amp. I hope you have an ociliscope to check wave form patern. A better match for the 2970 is a Texas Star Sweet 16. You get 16 120 Watt RMS transitor in a fan cooled case. 32 watts in will give you 1000-1200 watts RMS out. You know if your amp has not been converted yet you might well be able to drive it with your 2970. THe FCC made the industry set all linears up so that all amps intended for non-export use require 100 watt drive. I forgot about this. Most people undo this so that it will work with their Cobra but in this case you might just be ok. P.S. Always buy the bigest linear you can afford! The less you drive an amp the better it sounds and the longer it will last.
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sandman
Dodge Dakota
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12/14/2002
09:47:22
| RE: Alternator?
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Demon thank you for correcting my conversion factor. I always do that. I do not know how .702 ever got stuck in my head but I have not been able to shake that for years. See ya guys and good luck. P.S. Any compatent alternator shop can add winding onto the stock set up to increas the output and the bridge rectifer , diodes ...... can all be upgraded as well. Even though the case design on our alternators is unigue to the 4.7 the alternator is a standard Denso design. Seems like their should be some upgrade parts for it!
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POWER HUNGRY
Dodge Dakota
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12/14/2002
13:08:11
|  RE: Alternator?
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I don't know much about CB setups(single/dual pill) but my uncle is a fanatic. He just rebuilt his CB setup in his 89' Ram and now has a problem stalling the truck when he keys-up. Even if he is racing the motor in neutral it'll stall with only the small linear on(dual setup). He's also looking at a stronger antenna since he blew apart his wilson 5000. He has been working on/driving big rigs all his life and still into it.
He's crazy with that stuff like I'm crazy about the power/performance end of the trucks.
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sandman
Dodge Dakota
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12/14/2002
22:24:19
|  RE: Alternator?
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Some ECM/PCM's are not well shielded and the RF field can cause micro voltage spikes through inductance and it will skin across the silicon board in the ECM. This voltage spike trips transistors and can cause stalling. You realy want to isolate all the power feeds and RF lines away from any that feed the vechile. You also want to shield and ground anything that might have problems.Antena placment can also have some bearing.If he is drawing too much current this can also be leaveing the primary vechiles system with insefiecent voltage or current. A faraday(sp) cage can be constructed to keep stray RF out and grounding all systems will also help. If any of you are going to be running alot of power like more then 500 watts RMS remember that RF energy will cook you and all of your cells. The safest place for an antena radiating alot of power is on the roof. The roof will act like shielding and reduce your exposure to RF. No one knows the long term risks of moderate dosages of RF energy. By moderate I mean low enough that you are not aware that you are getting hit with and RF energy at all.
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jim
Dodge Dakota
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4/02/2003
19:35:46
| RE: Alternator?
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try out www.powermastermotorsports.com
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electric
Dodge Dakota
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4/02/2003
22:41:43
| RE: Alternator?
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hah!
I put a prestolite 35 amp generator on mine and it runs all my add-ons!
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Bad Ass
Dodge Dakota
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2/13/2010
12:50:14
| RE: Alternator?
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Hello I would like to correct sand man the texas star sweet sixteen only has 8 2879 transistors unless you buy the new one that is called the texas star 1600v which has 2 2879s driving 8 2879s which I have had both of them and my sweet sixteen with 150watts drive I got right around 1600watts my 1600v I got right around 1800watts and thats on a peak meter. I now build my own linears I just built a 16 pill that takes a 5 pill to drive it and I run it on 16 volts which it will handle 18 volts but on 16 volts I dead key 1500watts and swing 6000watts thats right 6kw and I run it in the house on a home made power supply that I have a switch for 16 volts or 18 volts and it is good for 400 amps but I also run it in my mobile with a 300amp alternator with an external voltage regulator that will go up to 16 volts and I run 2 catipiller 8 volt batteries in series to make the 16 volt battery to be charged. Just remember even though you might have a 16 volt alternator if you dont have the batteries or battery that is 16 volts it will not make 16 volts into the amp but hope that helps your friend on the east coast Bad Ass 136 in the keystone im back quite............
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