ECAE Alternator Belt slipping - Page 2

John Dinkel · 11-09-2022, 12:06 PM

Is the belt too long?

cad · 11-09-2022, 02:32 PM

Quote:

Originally Posted by John Dinkel

Is the belt too long?

Hi. The belt adjustment is good, just the pulley is too narrow. I have 2 or 3 others alternators laying around and will need to test fit to find another that is designed correctly.

Clark

FED 387 · 11-09-2022, 06:57 PM

personally i would go find "a belt" that fits in both grooves satisfactorily put it on without changing any pulleys start the engine up wing it to 6 grand see if the belt stays on doesn't flip off or slip has enough tension and makes the alternator charge---why bother chasing around for pulleys etc. unless of course you are going for the look --- who cares whether its to thin or too thick as long as it functions properly---FED 387

cad · 11-14-2022, 12:18 PM

While over at a buddy's place, I checked out his 2 cars both with east coast cs130 alternators. He is using a NAPA brand 25-7335 belt. It rides down in the alternator pulley better. He had 3 spare belts and they all measured .39 and .40. I picked one up yesterday and should do the trick.

Dayco 15330 belt was .44.

Thanks,
Clark

11-09-2022, 12:06 PM	#11
John Dinkel Senior Member Join Date: Nov 2005 Location: Pinckney, Michigan Posts: 507 Likes: 399 Liked 263 Times in 68 Posts	Re: ECAE Alternator Belt slipping Is the belt too long? __________________ John Dinkel 3295 STK

11-09-2022, 06:57 PM	#13
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,422 Likes: 529 Liked 333 Times in 180 Posts	Re: ECAE Alternator Belt slipping personally i would go find "a belt" that fits in both grooves satisfactorily put it on without changing any pulleys start the engine up wing it to 6 grand see if the belt stays on doesn't flip off or slip has enough tension and makes the alternator charge---why bother chasing around for pulleys etc. unless of course you are going for the look --- who cares whether its to thin or too thick as long as it functions properly---FED 387

11-14-2022, 12:18 PM	#14
cad Senior Member Join Date: Apr 2009 Location: Omaha, NE Posts: 702 Likes: 202 Liked 91 Times in 51 Posts	Re: ECAE Alternator Belt slipping While over at a buddy's place, I checked out his 2 cars both with east coast cs130 alternators. He is using a NAPA brand 25-7335 belt. It rides down in the alternator pulley better. He had 3 spare belts and they all measured .39 and .40. I picked one up yesterday and should do the trick. Dayco 15330 belt was .44. Thanks, Clark