Smog Pump / A/C Deletion...?
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Senior User
Joined: Sep 2004
Posts: 208
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From: Lexington Park, MD
Smog Pump / A/C Deletion...?
My question is can I bypass my smog pump and a/c compressor by putting on a shorter belt. Where I live there is no emissions testing. The truck is strictly for off-road use only.....
Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
Unless the pump is seized, you will gain absolutely nothing by doing this. The air pump takes virtually no power at all to run. You can guesstimate a belt length using a piece of string.
Posting Guru
Joined: Jun 2003
Posts: 2,314
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From: southwest michigan
if you are going to remove the air pump you will need to plug where it enters the exhaust. also, i've heard that this can cause a problem with that cats. i removed my cats last fall and decided to get rid of the pump since it wasn't doing anything at all. i had pulled of all of the extra a few months ago but just finally actually removed the pump today. i have A/C on my truck still so i don't know what belt size you need for that. but after about 4 trips to carquest my 95 f150 4x4 351 with everthing minus the air pump is using a 2440mm length belt. i hope this is some help.
