Shorter belt after bypassing Smog pump and A/C

Asked by Aug 30, 2017 at 12:05 PM about the 1989 Ford F-150

Question type: Maintenance & Repair

My Dad is wanting to bypass the smog pump and
A/C on an 89 F150, what size belt can he use?

3 Answers


Use a string and run it around the path for the belt that you will be creating after the AC and smog pump have been removed. Then measure the string and match it to a belt.

1 people found this helpful.

Using the string method, make sure the old belt in installed. Remember, if there is a tensioner you have so leeway if the measurement falls between two inch marks.

1 people found this helpful.

You can also get pulleys to put in place of the components you have removed and use the same belt.

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