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  #1  
Old January 7th, 2011, 10:43 AM
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Doug Crowther
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Tdi alternator

I have had no joy with the Italian Magni Marelli products.
Last summer my alternator started to growl- ie bearing noise. I was offered a 100 amp alternator from a 300 disco so I bought that and installed it. Last weekend that alternator burned up litterally-smoke billowing out from under the hood. I looked around and found that Denso (Japanese brand) offered a 100 amp unit for this fitment ( I saw this as an upgrade in quality). So I ordered it Tuesday from Paddocks. Ups man just dropped it on the porch a few minutes ago (faster than from Vermont). I open the box and the outer package says denso and I open it up and it looks like another frigging Marrelli. I flip it over and it says made in Italy and the plastic on the back has Magni Marelli cast into it. PI$$ED
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  #2  
Old January 7th, 2011, 10:51 AM
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  #3  
Old January 7th, 2011, 11:03 AM
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If its in a denso box, it was raised in japan and thinks its a denso, dont tell it the truth and it should lead a longer, happier life.
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  #4  
Old January 7th, 2011, 11:14 AM
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When Japan starts outsourcing electronics to Italy, I know the new world order is emerging! Question is, what will it mean for us all?

I'm pretty sure that my 2.8 alternator is a Bosch. Reason I dont' have a 300tdi alternator is due to the vacuum pump bolted on the back. Pendy told me that I could switch to a 300 tdi alternator (without vaccum pump) if I put a tdi vaccum pump on the block per LR factory. What I'm inferring from this is that if my Bosch fits on a 2.8, it'll fit on a 300 tdi, since the castings and mounts are all the same. The only thing is, it's not 100 amp. it's 80 or 60 (can't remember which right now).
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  #5  
Old January 7th, 2011, 11:32 AM
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I believe Magnetti Marelli is an oem for the D90. I also believe they are a distributor for Denso so it may be very possible that Denso did in fact make the alternator or some of it's components. I don't know who makes the Pro Line. You can always have your alternator rebuilt at a local shop and have it's output increased.
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  #6  
Old January 7th, 2011, 11:51 AM
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i know a serp belt alternator from a v8 will fit if you cut one of the ears off. maybe you can find a cheapie @ crazy ray's. but it will still be the same MM crap. you could get a rebuilt from your FLAPS just make sure you get one with a good warranty. Actually scratch that they won't likely take it back with an ear sawn off the back...then again they might not notice if you do a nice clean job of it....
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  #7  
Old January 7th, 2011, 01:07 PM
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Should have bought a bosch from me.
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  #8  
Old January 7th, 2011, 01:20 PM
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I rhave a 100 amp ex UK supplier. However, when I compare it with the one fitted to my Disco 300tdi (in the D90) the end cover is plastic. The original is a cast end cover with a steel heat shield.
I'm concerned about mounting the new one as the plastic cover is fairly close to the turbo.
Any thoughts?
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  #9  
Old January 7th, 2011, 01:36 PM
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Jeff Labbé
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how much have you paid for that Denso / magneti ?
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  #10  
Old January 7th, 2011, 01:41 PM
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Interesting point, Doug, do you have the heat shield on yours?

Quote:
Originally Posted by Whiesel View Post
I rhave a 100 amp ex UK supplier. However, when I compare it with the one fitted to my Disco 300tdi (in the D90) the end cover is plastic. The original is a cast end cover with a steel heat shield.
I'm concerned about mounting the new one as the plastic cover is fairly close to the turbo.
Any thoughts?
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  #11  
Old January 7th, 2011, 02:13 PM
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I have a Denso and a Magnetti Mareli alt at home, and I swear that other than the name sticker they are the same.
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  #12  
Old January 7th, 2011, 02:58 PM
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Julien Dalbin
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Check old threads, you can get an 100 amps Iskra for less than 200$, just have to do a pulley swap.
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