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Hey all just trying to see if I'm crazy or if anyone else has had the same problem.
My 77 alternator died (looks like it was the first one ever made) so I got the powermaster performance 85 amp, body seems the same besides the terminals are in different spots but the mounting seems the same. I put it in and go to tension it and it just won't tension, even maxed out on the tensioner I can't get it right. Anyone had this problem? Should I use a shorter belt, belt on there is napa premium xl 25-7545 , or is this alternator just not actually a good fit like summit said? Any help would be nice, thanks ahead of time. Replacement alt
The exterior of a 10SI alternator is pretty much the same as any other 10SI. Did the new one come with a pulley installed? If so, how's it compare to your old pulley?
Can you post a photo of your car and alternator, not the box?
Several possibilities:
Someone put the wrong alternator in the box (happens a lot more than it should)
The PO of your car came up with a non-stock alternator solution, and now the "correct" alternator no longer works
I reclocked my Powermaster alternator, but I think it would have worked without.
It's pretty easy to re-clock a 10SI alternator. Remove 4 screws. Break the half's loose from the stator, re-clock. Install 4 screw. If you pop the brushes off the commutator. The only special tool is a tooth pick.
Why your belt doesn't fit? Wrong pulley? Wrong belt?
And you ARE of course upgrading that alternator wiring now that your installing a higher output alternator, right?
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77 C3 Alternator Upgrade
