Early B-series Alternator Upgrade

[browntw.79]

I have a single 6BT (built 10/86) on my Albin 36 trawler.  I currently have a tired Delco 17si (I think) alternator that is rated at 105A that I am replacing.  I would like to install an alternator that is rated in the 150A to 200A range so I can pull a little more power than just my starting battery bank.  I find the alternator options and configurations somewhat overwhelming.  I would like some suggestions on bracket and alternator configurations that could be fit without major reconfiguration.  

Thanks in advance for any suggestions and recommendations.

Topic

[John]

If you know a good alternator rebuilder (or learn how, it’s not difficult), you can rebuild the original Delco 105 amp with a 160 amp stator.  This alternator frame will accept up to a 200 amp stator.  I’ve had my 18 year old alternator rebuilt with a 160 stator.  Salt water environment is tough on the puny components and wires in these things.  I’ve had a couple of subsequent fixes (diodes, brush wires, battery posts, etc).  The boat is hauled for Winter, and I either pull the alternator off or wrap it in Stretch-Tite plastic wrap over the Winter.  The old alternator is still pushing a solid 160 amps.

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[Tony Athens]

With very little effort you can install  Delco 19SI at about 145 Amps.. Above that, you’ll  be changing mounting hardware/bracketing spending lots more $$

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