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View Full Version : Alternator output on 2000 xstar?


ac505
04-29-2014, 05:26 PM
Does anybody know the amperage of the alternator on an '00 xstar with 310 Tbi engine?

Jeff d
04-29-2014, 05:31 PM
Is it an LTR? If so it's probably a 51 amp Leece-Neville.

Edit: Sorry for my poor reading skills. I see where you said it was a TBI. Despite it being the "lower end" engine I seem to recall that it may have a better alternator than the pathetic 51 amp on the LTR.

Rossterman
04-29-2014, 05:48 PM
Our 2001 predator was only 52 amps as well. You can get a rebuilder to increase capacity to ~90 based on threads here

Jeff d
04-29-2014, 05:55 PM
Not sure on the TBI but swapping in this 110 amp alternator was pretty painless on my LTR:
http://www.dbelectrical.com/p-3610-new-delco-marine-alternator-mercruiser-3-wire-110-amp-10si-ho-adr0106.aspx

The later revision alternator bracket for the LTR cleared this much larger alternator without issue. My original alternator and bracket were messed up due to a crappy design that was recalled but never handled by the previous owner. I added a larger 10 gauge charging wire from the new alternator to accommodate the additional amperage. It was a pretty good upgrade and significantly cheaper than OEM. This will be my 4th or 5th season with this alternator setup. I don't think you can beat it for $70.

BriEOD
04-29-2014, 06:32 PM
Yes, it is around 50 amps, that is what was in my 2000 PS 205. I went up to a 90 amp alternator. Just make sure that when you do, you increase the size of the charging lead. In other words, you need to increase the wire gauge.

ac505
04-29-2014, 07:11 PM
I'm not planning on upping the alternator, instead speccing up a split charge relay for a second battery. 60A gives more than enough it sounds .

willg
05-01-2014, 09:00 PM
Do you have a V-Belt or serpentine? I believe serpentine belt driven motor have 70 amp alternators. I know my boat does and SKIDIM advertises the correct replacement unit for a serpentine belt 5.7L engine as the 70 amp alternator.