Whats the best upgrade for 3.5 V8 alternator. - Defender Source
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  #1  
Old February 24th, 2016, 01:35 PM
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Derek Chace
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Whats the best upgrade for 3.5 V8 alternator.

I need some more power with all the accessories I've added on to the ex mod 110 with the 3.5 V8.

What alternator options are you guys running?
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  #2  
Old February 24th, 2016, 01:39 PM
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My 90 has headers and a nice free flow stainless exhaust and some carb work. Has ALOT more pick up than my stock 110 and its not just the weight difference. I have heard that the 4 bbl carb with a good performance intake will really wake them up, but I have not done this myself yet.
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  #3  
Old February 24th, 2016, 01:44 PM
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Cam and timing chain are number one. They wear out on these crappy old American motors.

Then probably exhaust and intake. There are a ton of books written on performance upgrades for these engines. Go and do some reading.... The engine design is over 50 years old. Everything is known.
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  #4  
Old February 24th, 2016, 01:55 PM
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Shit I worded this wrong. I need s bigger better alternator
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Old February 24th, 2016, 01:57 PM
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if you have 175s switch to SU's...

and you can always go twin turbo SD1, drove one back in the 90's the 110 had a 100gal tank you could see the needle move both on the tank and on the speedometer.

I know everyone here likes there Rovers nice and slow but a 110 at about 100 isn't so bad after all a range rover classic did about 115mph
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  #6  
Old February 24th, 2016, 01:58 PM
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Quote:
Originally Posted by greenmountainrover View Post
Shit I worded this wrong. I need s bigger better alternator
LOL. What alternator do you have currently? Tons of room on a 3.5 to add any alternator you want pretty much.
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  #7  
Old February 24th, 2016, 01:59 PM
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24 or 12v, that is the question!
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A friend of mine runs a land rover / range rover specialty repair shop. Based on his experience, they are capable of stopping anywhere, anytime, at any cost.

I don't know about the brakes, only their unreliability.
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Old February 24th, 2016, 02:02 PM
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I'd throw in the twin turbo regardless it will charge everything faster.
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  #9  
Old February 24th, 2016, 02:02 PM
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Quote:
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24 or 12v, that is the question!
Pretty sure no Defenders run on 24V. The FFR trucks that have 24 V run a separate 24V generator that only powers the specific 24 V equipment.
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  #10  
Old February 24th, 2016, 02:03 PM
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12v and bone stock from the mod
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  #11  
Old February 24th, 2016, 02:08 PM
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Quote:
Originally Posted by greenmountainrover View Post
12v and bone stock from the mod
You need to go and see what alternator is there. There is more than one stock possibility.
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  #12  
Old February 24th, 2016, 02:09 PM
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Will do.
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  #13  
Old February 25th, 2016, 09:43 AM
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Any of the Delco 10si or 12si versions will fit in there. You need to add a washer or two to the alternator mount (see Robert Davis) or you can custom fab a new mount.

I have a 100 amp 10si in my Stage One. I went that route after I installed the winch as I viewed the factory 65 amp as being too small (and it was broke and only half charging, anyway).
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  #14  
Old February 25th, 2016, 07:33 PM
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Its an A127-45 so I guess 45amp.....I know I need more amps now
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Old February 25th, 2016, 07:41 PM
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So the easiest route is to get a stock 65 amp unit.

Above that, there are custom units up to pretty much any size.
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  #16  
Old February 25th, 2016, 08:16 PM
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I've got heated seats, espar heater, 12v charger, winch to power. Would 65 amp do that?
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  #17  
Old February 25th, 2016, 08:25 PM
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I would say bigger the better with all that stuff, especially in the cold.
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  #18  
Old February 25th, 2016, 08:31 PM
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Quote:
Originally Posted by greenmountainrover View Post
Shit I worded this wrong. I need s bigger better alternator

Sorry to cut in but I was really enjoying the discussion of best performance upgrade for the 3.5 V8!!!!
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  #19  
Old February 25th, 2016, 08:51 PM
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Quote:
Originally Posted by Red90 View Post
Pretty sure no Defenders run on 24V. The FFR trucks that have 24 V run a separate 24V generator that only powers the specific 24 V equipment.
Interesting. Nevertheless read anything saying 24v Defenders are Dual Voltage. Appreciate the info,
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A friend of mine runs a land rover / range rover specialty repair shop. Based on his experience, they are capable of stopping anywhere, anytime, at any cost.

I don't know about the brakes, only their unreliability.
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  #20  
Old February 26th, 2016, 09:36 AM
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I fitted a 120amp Bosch alternator out of a VW onto a 3.5 in a RRC. Here's the write up I got my information from... Bosch 120 Amp alternator
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