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Old 08-31-2010, 08:09 PM   #12
dbarton
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Join Date: Nov 2002
Location: North of Dallas
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Quote:
Originally Posted by badvlvo View Post
Did you install a 4ga wire from Alt+ to Batt+?
No. I'll do that AFTER testing. I want to see how it does with the same hook ups my Bosch had.

Quote:
Originally Posted by badvlvo View Post
13.9v with everything on is pretty good for any alternator that size at that engine speed.
Remember that's COLD. A hot alternator is a whole different animal.

Quote:
Originally Posted by klr142 View Post
My engine just seems very noisy/whiny and a decent amount of it seems to come from the alternator, even though it's been replaced in the past year(reman Bosch 80A). I wonder if the fan design on the new one is quieter than the external setup, and the new bearings may be quieter as well?
I have never noticed a Bosch external fan being noisy, unless it's broken. If bearings can be heard at any time, I would thing they would be very shot.
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'84 242ti, owned since 2003. Always garaged since brand new. Old-school rounds because. B21FT, SDS EFI/IGN, TD04HL-15G, T5Z trans with 0.73 OD, 3.91 diff with unmodified G80.
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