Hi-output Alternator for D2?
- Thread starter K-rover
- Start date
The factory alternators (and anything else in mass production built for the vehicle) are garbage. Always have been, and always will be. They'd still be garbage if they were putting out 300 amps. Of all the DII complaints out there, it's hard to believe people don't mention this more often.
If you use a winch for utility purposes a higher amp alternator can be a very good thing. The same goes for long-distance use in wet terrain. Pulling yourself out of mud or up some rocks once or twice on weekend trail rides is fine, but if you keep using that winch and lights it'll bite you in the ass eventually.
Cheers,
Kennith
I ended up getting the 150amp P38 alt for my D2. Now while winching the alt is able to keep up with the discharge of the battery and the truck doesn
That was the issue I was having. Any time I put a big load on the winch the truck would want to shut off. The battery voltage was going down faster than the alternator could fill it back up. Since Ive moved to the 150amp I no longer have that issue while winching.
That was the issue I was having. Any time I put a big load on the winch the truck would want to shut off. The battery voltage was going down faster than the alternator could fill it back up. Since Ive moved to the 150amp I no longer have that issue while winching.
I think you would be better served with a larger battery than a higher output alternator. I've used a winch numerous times and never had it bog down my truck.
This is the problem I'm having with my Warn winch. I have to rev up the engine to continue to use the winch or it starts to cut out.
Fk it... I'll probably just go with a 150A P38 alternator and just be done with it.
I have a "200 amp" rebuilt alternator off eBay but I don't really believe it produces anywhere near 200 amps. At idle with the air compressors running (60 amps), the battery would dip to under 12 volts (from 13.8-14.1)
I saw those 200A ones on eBay. I messaged the seller to find out their warranty and the exact specs on it because it's hard believe for their price of it.
I agree with that. My current battery is an old Duralast from Autozone. Its been in the truck going on 7yrs. Ive drained it by letting the truck sit for too long. Pull it out take it to Autozone expecting them to say it wont take a charge, but it just keeps on going. I do plan on getting either an Optima or similar. But if you need to replace your alt anyway, why not replace it with something with better capacity?
Don't get an Optima. They are truly shit.
I've had a few and the most you can expect from them is 2 years.
I've had a few and the most you can expect from them is 2 years.
I posted here before about higher output alternators, and someone mentioned - it might be Robert - that there are tradeoffs in higher output alternators, e.g., a higher output alternator might give out more amps than a stock one at 2k rpm, but less than a stock alternator @ idle. I'm no expert, just passing that along, the thread is somewhere here
Yeah Optimas suck. My Odysseys have been running strong, but I'm now running a third lithium battery in the rear, so when I have to replace the odyssey's, I'll probably go cheap flooded. All the odyssey's do now is run the truck and winch
Yeah Optimas suck. My Odysseys have been running strong, but I'm now running a third lithium battery in the rear, so when I have to replace the odyssey's, I'll probably go cheap flooded. All the odyssey's do now is run the truck and winch
Stock or P38 alternator, good battery (Diehard Platinum or O'reilly clone, etc), and a decently efficient winch should simply work without issue.
Yes and no. Winches pull 3-400 amps for an extended period of time, Most "normal" batteries are never meant to have that kind of load on them for more than just a second while you crank the vehicle. I would expect no issues from a stock alt and high end battery. But you cant expect a regular battery to just have enough juice for that kind of load.
My '00 D2 has been running it's stock 130 amp alternator with dual batteries almost since I bought it, with no problems. I put a solar panel on the roof with dual-channel charger controller to keep things topped off and healthy, and provide laptop power, but even before that I had no problems keeping two batteries charged while driving.
I specifically asked the eBay seller " eagleautoelectric " those same questions of amp readings at idle and at 2000RPMs for his Land Rover 200A alternators and he stated "don't have the details but it comes with one year exchange."
Naw mate. I think I'll pass on that.
We used the red top Optimas 12VDC batteries in the Air Force since the 90's and they did suck. We figured out late in the game that you had to trickle charge them to get them to hold a charge but the Optima charging station was a ridiculous cost.
Once they got below 7VDC you can no longer trickle charge them so we ditched them or used them as target practice out in the desert.
Johnson Controls moved Optima manufacturing to Mexico 10 years ago and quality has gone down accordingly. Way down. They used to be made near Denver, in Aurora, Co.
XS Batteries are made somewhere in the murky depths of East Tennessee, are not for anyone looking for cheap batteries ($$$), but look to be the real deal.
XS Batteries are made somewhere in the murky depths of East Tennessee, are not for anyone looking for cheap batteries ($$$), but look to be the real deal.
Thanks for the heads up on Optima! Looks like the Odyssey is in the same price range so I'll probably go that route.
Unfortunately, as of 2023.10.31 (boo), MeanGreen does not list any rover alternators:
mean-green.com
www.mean-green.com P# 1-866-951-4159
mean-green.com
I have now destroyed 4 Odyssey batteries in a row.. by either freezing them (in the not-so-cold Piedmont of North Carolina) or by draining them too low via my own alternator woes. They are dead to me now; I'll never buy another one. That said; I am just not impressed with the paper tiger nature of glass matt batteries. The only things they have going for them are a little more amps (due to cell compactness) and "non-spillage".. which has really never been a factor (personally). Just old fashioned wet cells seem to be the most forgiving.