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#1 |
Senior Member
Join Date: Apr 2009
Location: Omaha, NE
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Hello,
I updated my alternator this season from an ECAE 55a mini to the ECAE 120a CS130. The mini 55a alternator pulley fit belt #15330 perfectly, just did not put out enough. On the 120a, belt #15330 rides way high in the pulley, slips, and obviously does not keep up while idling through the pits. I can easily rotate the alternator with a ratchet and 2 fingers. I called East Coast Electric and he said to crank on it and tighten it up more. The belt is very tight now. I am hesitant to use a breaker bar and tighten it up more which I feel would sideload the crankshaft. What are your thoughts on how high this rides in the pulley? How tight is too tight? Photo link: https://photos.app.goo.gl/Csq4YAcMJPQkvfuz7 Thank you, Clark Last edited by cad; 11-08-2022 at 04:43 PM. |
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#2 |
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That's too wide of a belt for that alternator pulley. Does it protrude on the crank pulley like that also, or does it ride flush with the top of the pulley?
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Phil Molski PMR Performance S/C 1623 |
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#4 |
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Join Date: Oct 2012
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I would take that belt to NAPA and look for one a little narrower.
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CJ McDonald I/SA 2564 |
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#5 | |
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![]() Quote:
15330 dayco is 11.1mm / .44 inch wide. Goodyear belt #7334 is 8mm and I wonder if that would ride too deep on the crank pulley. Last edited by cad; 11-11-2022 at 11:10 AM. |
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#6 |
Senior Member
Join Date: Apr 2009
Location: Omaha, NE
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Here is how the mini alternator pulley/belt mated.... as intended:
https://photos.app.goo.gl/rHPhMQzKmknjW6R77 |
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#8 |
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How about sending those pics to East Coast
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Phil Molski PMR Performance S/C 1623 |
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#9 |
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Just swap pulleys from your old alt. to the new.
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#10 |
Senior Member
Join Date: Apr 2009
Location: Omaha, NE
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Asked them about swapping, but he said the pulley is different... perhaps shaft size or offset. I did email him the pic. I appreciate the ideas.
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