Thread: Alternator size ?

Are you going for SQ/SPL/Streetbass, are you planning on competing and if so, at what level?

If it's just for a personal system rather than competition, I'd say stick with standard and see how it works out.. uprate the battery/stock wiring first as it's a lot cheaper. If you still have a reason to want to upgrade the alternator later, you can do so..

Also, be aware that a 150A aftermarket alternator isn't necessarily better than a 100A stock one.. if the stock one puts out 80% of its current at idle and the 150A one only puts out 50% at idle, you'll probably find the OE one is better in practise (and OE ones usually have a higher output ratio at idle than aftermarket ones, although not always).

HTH

Mark

not sure about interal fuse but:

In the back of the owners manual it says:

for the 1000/1 amp - General specifications Recommended fuse value 100a
recommended fuse type ANL

for the 300/4 amp - General specifications Recommended fuse value 40a
recommended fuse type AGU or Maxifuse

I have a 100 amp alternator I was going to use but not sure if its big enough. The stock one I am sure is to small something like 60amp.

hope this helps.

Just for personal use, no competitions. SQ not SPL.

Originally Posted by mulletboy2

Are you going for SQ/SPL/Streetbass, are you planning on competing and if so, at what level?

If it's just for a personal system rather than competition, I'd say stick with standard and see how it works out.. uprate the battery/stock wiring first as it's a lot cheaper. If you still have a reason to want to upgrade the alternator later, you can do so..

Also, be aware that a 150A aftermarket alternator isn't necessarily better than a 100A stock one.. if the stock one puts out 80% of its current at idle and the 150A one only puts out 50% at idle, you'll probably find the OE one is better in practise (and OE ones usually have a higher output ratio at idle than aftermarket ones, although not always).

HTH

Mark

Thank You very much, I will give the 100 amp alternator try and do the big 3.

Thanks again, Kevin

Originally Posted by IC-C30

doesn't make any difference if you're going to compete or not..... the output won't change.... so I wouldn't know why anyone would ask..... you could do with your stock alt. search for "big 3" on the forum here. I'd start with that before looking onto an other alt. If you're eperiencing any trouble after you're sure all wiring is correct, THAN upgrade to a bigger alt.

edit: If you already have the 100amp alt lying around, you could use thhat one... do the big 3with that one and you should be fine for sure!

A two farad cap will definately do the trick, however with that old of a vehicle a bigger alternator will help, i would also throw in a Redtop Optima or equivalent battery...


"Its not the size of the alternator that counts, its how well you work it"

-David69Leonard-

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