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 Air pump delete/header questions

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BigBrian



Posts : 31
Join date : 2018-02-28

PostSubject: Air pump delete/header questions   Tue Mar 13, 2018 8:56 am

Good morning!

I have a 1992 RMW with the 350 TBI. I have a couple of questions.

Will deleting the air pump and lines improve hp or fuel economy?

If I do delete the air pump, can I run headers? If so, what fits this car? Will I lose my EGR with headers?

Thanks!
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Rev Bob



Posts : 219
Join date : 2016-05-24

PostSubject: Re: Air pump delete/header questions   Tue Mar 13, 2018 9:59 am

""Will deleting the air pump and lines improve hp or fuel economy?""

No. The air pump setup allows the 3 way cat convertor to come up to temperature quickly under cold rich conditions, when unburned hydrocarbons are high. The magical reduction of pollutant products in the cat only occurs at very high honeycomb temperatures.

If your local laws permit it, removing the cat will make more improvement than headers.
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BigBrian



Posts : 31
Join date : 2018-02-28

PostSubject: Re: Air pump delete/header questions   Tue Mar 13, 2018 11:19 am

Good to know.

Since this car is a pre-obd2 I can remove the cats without issue.

Thank you.
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RedandBlack

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Posts : 418
Join date : 2016-01-19

PostSubject: Re: Air pump delete/header questions   Tue Mar 13, 2018 12:21 pm

You can still run headers and keep EGR. I had a set of Hedman shorties on my car back when it was TBI powered, no AIR pump, and a functional EGR valve.

There's a different belt routing you have to make when the AIR pump is removed, and a different length. From memory (it's been a few years) I ran a 95.5" belt, so 5060955 at the part store.
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BigBrian



Posts : 31
Join date : 2018-02-28

PostSubject: Re: Air pump delete/header questions   Tue Mar 13, 2018 5:05 pm

Awesome! Just what I was hoping to hear!
I read about the belt rerouting and size difference so I'm good there.

Thank you
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BigBrian



Posts : 31
Join date : 2018-02-28

PostSubject: Re: Air pump delete/header questions   Tue Mar 13, 2018 5:05 pm

Awesome! Just what I was hoping to hear!
I read about the belt rerouting and size difference so I'm good there.

Thank you
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94Woody



Posts : 1517
Join date : 2008-12-02
Age : 43
Location : Ocala,FL

PostSubject: Re: Air pump delete/header questions   Tue Mar 13, 2018 5:37 pm

A good place for TBI info is www.thirdgen.org
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BigBrian



Posts : 31
Join date : 2018-02-28

PostSubject: Re: Air pump delete/header questions   Tue Mar 13, 2018 6:14 pm

Thanks!
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lakeffect
Moderator
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Posts : 3885
Join date : 2009-08-18
Location : Rochester NY 14621

PostSubject: Re: Air pump delete/header questions   Sun Mar 25, 2018 9:52 am

Either 95 or 96 inch belt will work. I used the 95 successfully. As mentioned it doess require a different routing path.

I had pictures, but refuse to pay photobucket keeping my pictures hostage.
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