300tdi 100 Amp Alternators - Page 2 - Defender Source
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  #21  
Old March 22nd, 2013, 08:30 AM
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Quote:
Originally Posted by Manimal View Post
Doug, do you have a part number? Will the AMR2938 (120 AMP) work for a 300tdi? Is there a part# that won't work with the 300tdi? Can a petrol alternator be used for diesel and vice versa?
Anything that will line up with the belt and mounts can be used. The limitation is the stock wiring harnes as the charge wire is somewhat small. This can be easily over come by simply running a heavy gauge 10 wire from the back of the new alternator to the positive lug on the starter where the cable from the battery comes up in addition to the stock harness wire.

This is the one I used http://www.paddockspares.com/amr4248....html?___SID=U
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  #22  
Old March 22nd, 2013, 09:25 AM
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my 2c, go Iskra.
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  #23  
Old March 22nd, 2013, 09:49 AM
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ooh, that's good info right there Doug
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  #24  
Old March 22nd, 2013, 10:08 AM
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Direct fit?

Quote:
Originally Posted by JFD View Post
my 2c, go Iskra.
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  #25  
Old March 22nd, 2013, 10:11 AM
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Thanks Doug! Great advice. I will upgrade the cable.

So what amp size for a dual battery set up? Is 100A enough? Is there a 120A that is a direct fit to a 300di?
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  #26  
Old March 22nd, 2013, 10:34 AM
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Quote:
Originally Posted by Manimal View Post
Thanks Doug! Great advice. I will upgrade the cable.

So what amp size for a dual battery set up? Is 100A enough? Is there a 120A that is a direct fit to a 300di?
It has nothing to do with the number of batteries. It has to do with the amount of draw that you will see. You need to look at how much load there will be and the duty cycle of the loads.
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  #27  
Old March 22nd, 2013, 10:48 AM
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Quote:
Originally Posted by Manimal View Post
Thanks Doug! Great advice. I will upgrade the cable.

So what amp size for a dual battery set up? Is 100A enough? Is there a 120A that is a direct fit to a 300di?
To calculate your current draw in amperes, divide the power (in watts) of whatever you're running by the voltage. Voltage should be about 13v for a healthy battery and alternator.
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  #28  
Old March 22nd, 2013, 11:02 AM
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Dual batteries has to do with load as stated by John and Chris. Personally I think dual batteries are a waste unless you run an inverter while camping or have a lot of aux lights on while winching with a large winch. Defenders, especially tdi's require very little from the alternator in stock form. Even with the radio on, wipers on high and lights on high beam the 65amp alternator is sufficient. Some are all about additional capacity for that just in case moment which makes sense for those traveling alone in the desert or in very remote areas etc which we don't have here on the East coast so my perspective is scewed. If you run dual batteries alternator size becomes more about how quickly you recharge the batteries. Keep in mind alternators ratings are @ a specified rpm. Many alternators do next to nothing @ idle and really need to be @ 1200 rpm or higher to make the juice.
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  #29  
Old March 22nd, 2013, 02:09 PM
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Quote:
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Direct fit?
Drop in, just have to swap pulley.
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  #30  
Old March 22nd, 2013, 02:44 PM
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or a fridge
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  #31  
Old March 22nd, 2013, 11:10 PM
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Between my Icom IC-7000 HF radio (during transmit of CW) and ARB fridge (when running) alone I was looking at ~30 amps.

It seemed like an easy job to drop in the 100 Amp alternator, and it was. Bolt in replacement. Now I just need to find a hand throttle during winching to keep the amps up. I miss the "Tac Idle" switches on military trucks.
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  #32  
Old March 23rd, 2013, 06:26 PM
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While installing new intercooler hoses I tore off this inconveniently located inline fuse for my alternator. Two questions: 1. Can a drive around without the alternator fused? I assume it wouldn't charge the battery but are there other damaging effects? 2. Is this really the best way to fuse the alternator or is there a better way? I'm planning an alternator upgrade so that would be the time to fix this if its not done right.
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  #33  
Old August 19th, 2013, 01:20 PM
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Quote:
Originally Posted by JFD View Post
my 2c, go Iskra.
What is this part number or model number? For this "iskra" alternator? Three mentions of it but no number or model. Is it just one?
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  #34  
Old August 19th, 2013, 01:41 PM
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Are there any regular land rover engine alternators that I can throw on a 300tdi to replace a bad one? Like from a range rover or anything like that?
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  #35  
Old August 19th, 2013, 01:51 PM
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Quote:
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The Iskra fits, it's a 100 amps unit, cost around $180 brand new from supplier in FL. If I remember well the ref is in the old thread, but in case it's not I can retrieve seller, price and ref. I did had to swap pulley from old Magnetti, you'll need an impact wrench.
Julien: have looked at many alternator threads. You say go get an iskra in many of them.

How about posting the model number and source for this little beastie? Perhaps it's printed on the side of the unit.
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  #36  
Old August 19th, 2013, 05:36 PM
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Quote:
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Julien: have looked at many alternator threads. You say go get an iskra in many of them.

How about posting the model number and source for this little beastie? Perhaps it's printed on the side of the unit.
ISKRA 100 amp model AAK5326

I bought mine from Elpar Industries, Inc. in Pompano beach Florida.
Cost was 186.86 in 2009
My contact then was Alan, ELPARIND@aol.com

4 years now, never had a problem with this unit.
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  #37  
Old August 19th, 2013, 09:10 PM
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Quote:
Originally Posted by JFD View Post
ISKRA 100 amp model AAK5326

I bought mine from Elpar Industries, Inc. in Pompano beach Florida.
Cost was 186.86 in 2009
My contact then was Alan, ELPARIND@aol.com

4 years now, never had a problem with this unit.
Thanks for checking up on the part number. You rock!
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  #38  
Old August 19th, 2013, 10:12 PM
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Only mod I made is a heat shield, made of aluminium plate, about 1.5 inches from plastic back cover, to keep the heat of exhaust manifold away from diodes.
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  #39  
Old August 20th, 2013, 12:02 AM
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Quote:
Originally Posted by mgreenspan View Post

Thanks for checking up on the part number. You rock!
X2..

With the PN googled not only did I find it on line but also cheaper.
Iskra I think is Czech. Clearly our alternators are more popular than we are lead to believe.

http://www.jackssmallengines.com/Alt...tors/ALU0020/A

And

http://www.amazon.com/gp/aw/d/B008BVZMJY
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  #40  
Old August 20th, 2013, 12:51 AM
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Quote:
Originally Posted by Rocky View Post
X2..

With the PN googled not only did I find it on line but also cheaper.
Iskra I think is Czech. Clearly our alternators are more popular than we are lead to believe.

http://www.jackssmallengines.com/Alt...tors/ALU0020/A

And

http://www.amazon.com/gp/aw/d/B008BVZMJY
The two you posted are the same part as aak5336?
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