High output (170amp) bolt on alternator, anyone try it yet?

[Photoman]

Originally Posted by wierdbeard

so you need a bracket from BJOWETT a 2005 tundra alt and ?? whats the deal with the pulleys?

If you are interested in doing the Toyota alternator upgrade I have a bracket available. As far as the pulleys; putting the belts in the pulleys and then tipping the alternator with belts in to the top stock mount is much easier than trying to work the belts over top of the pulleys.

The stock charging wire and in particular, the fuse link, was designed by Toyota for an 80 amp alternator. Upgrading the alternator to 130 or 150 amps requires that the charging wire and negative ground wire should be upgraded. If there would be a scenario when winching or charging a low battery etc., where the new alternator would put out its rated capacity it might let the smoke out of the stock fuse link. So to do a Toyota upgrade, mechanically an adapter bracket and 130 or 150 amp alternator is needed. To do the wiring, a larger charge wire and fuse is needed. Up sizing the negative is recommended to get the full potential out of the new alternator.

Thanks to all for the nice comments.

Bill

[robmir]

Originally Posted by Photoman

Up sizing the negative is recommended to get the full potential out of the new alternator.

Bill

Hi Bill: Upsizing the negative is not really so necesary as is the positive alternator output, since the negative battery post goes to the frame and then to the engine block and is sized to handle the starting motor current demand but also enough to handle whatever the alternator provide since it's bolted to the engine.

Of course upsizing the negative is not a bad idea and proof of that is I did it on mine.