I have an 84 4Runner and the stock alternator is only 40 amps, and thats not even close to being enough power to run a winch or rock lights or anything else for that matter. Now here is the problem im running into, my 4Runner is externally regulated and all of the newer alternators that ive looked at are internaly regulated. is it possible to upgrade my 4Runner with a newer style internaly regulated alternator and eleminate the external voltage regulater altogether ?. I did some searching but could only find information on 85 and up trucks/4Runners. Any help is appreciated.

 

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What slacker posted, but here is some quick info:

Also try Boyle's Future Technologies in California. I am thrilled with my alternator rebuild for $130 bones.

From TTORA:

I just posted a message to someone else about an outfit that does a very good job of beefing up stock Toyota alternators. It's a place in Auburn CA called Boyles Future Technology and they do a good job for significantly less money than Mean Green, Power Master etc. etc. I'm getting over 100 amps out of mine and I actully measured it with my clamp on amp meter so it's real not just advertized bull. As I recall it was in the area of $100 and they turned it around pretty quickely too. Can't be all bad, Parts Mike told me about them

Here is more praise...
http://www.ttora.com/forum/showthrea...=boyles+future

And contact info:

Boyle Future Technology
12325 Locksley Lane, Auburn, CA 95602

phone: (530) 888-6290

http://yellowpages.superpages.com/pr...D%3D&SRC=local

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My rebuilt Alt runs 4 PIA 520's, Rocklights (not LED's) AND my winch all at the smae time... it's amazing, esp when idling!