1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

a question and a favor!!!

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Old 08-20-03, 01:47 PM
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a question and a favor!!!

question: how do i raise the idle on my 83?

Favor: PLEASE!!!! go outside and measure the length of the 2 pipes on your 12a header, i think they are called primearies. im gonna make my own header, but i was told that length was very important.
Old 08-20-03, 02:44 PM
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Idle speed and idle mix screws. Red one is mixture, yellow one is idle speed.





The pipes should be equal length.
Old 08-20-03, 05:53 PM
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The yellow one, by the way , is VERY hard to get at ... use a long flat screw driver and some patience, you'll get at it ... turning left idles higher, and tightening idles lower ...
Old 08-20-03, 07:03 PM
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i had no trouble getting to the idle screw...

-greg
Old 08-20-03, 07:13 PM
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Originally posted by The_Dude
The yellow one, by the way , is VERY hard to get at ... use a long flat screw driver and some patience, you'll get at it ... turning left idles higher, and tightening idles lower ...
Uhhhhhhhh, you got that mixed up. Un screwing it lowers idle, in makes it higher.
Old 08-20-03, 07:36 PM
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Re: a question and a favor!!!

Originally posted by rmayton

Favor: PLEASE!!!! go outside and measure the length of the 2 pipes on your 12a header, i think they are called primearies. im gonna make my own header, but i was told that length was very important.
I wanna say 26" X 2" ID primaries are a good compromise for serious street duty...3" X 2.5" ID collector
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