PDA

View Full Version : Engine What is the correct length of the water pump/alternator belt?


jackb
04-03-2014, 04:19 AM
What is the correct length of the water pump/alternator belt?
I believe mine may be too short (I want to install a turnbuckle instead of the alternator adjustment bracket) (I believe the alternator installed is a 105 amp motorola. It is from DMC CA)
Hokie
04-03-2014, 09:05 PM
Maybe this will help? http://dmctalk.org/showthread.php?t=932
Hokie
04-03-2014, 09:09 PM
Just realized you asked for the size, not the part number. Disregard.
Michael
04-03-2014, 10:11 PM
It depends on the alternator you are running...or more specifically the pulley size. Some aftermarket alternators that are sold run a smaller pulley to help charge rate at idle. Some PO mods can have a smaller pulley on a DMC alternator, or even a complete alternator from a Saturn.
jackb
04-04-2014, 03:56 PM
The pulley outside diameter is ~2.75".
It was purchased from DMC CA in Oct/Nov 2011. I *believe* it is a 105amp Motorola.
http://i30.photobucket.com/albums/c348/kaaooga3/dmc/1609543F-A2B8-4884-90D9-3615BA2E236B_zpswyrfkjo3.jpg
Michael
04-04-2014, 08:58 PM
I have the same size diameter pulley on my DMC alternator. I'm running a 15495 belt which is 49.5" long. It's a little thinner than the factory belt so it's riding a bit lower in the groove than yours but it's never slipped. Both belts are due for a replacement before driving this year. I think the AC belt is the same size.