Harmful idle?
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From: Texas
Car: Hugger Orange Camaro
Harmful idle?(moderators?)
Ok fellas, the basics first. I've got a Holley 750 DP w/ manual choke, manual secondaries on a high performance 355.
I've done some searching and can't quite find what I'm looking for
in perticular. My idle as of now is set at 750 in gear 950-1000 in park. I want to lower the idle to about 550-600 in gear 750-800
in park.My question is, will doing so hurt the engine at all?!
I read in one post that it wouldn't but I need more opinions
I can't afford to blow this engine toooo much money in it!
Thanx y'all. DUECE
I've done some searching and can't quite find what I'm looking for
in perticular. My idle as of now is set at 750 in gear 950-1000 in park. I want to lower the idle to about 550-600 in gear 750-800
in park.My question is, will doing so hurt the engine at all?!
I read in one post that it wouldn't but I need more opinions
I can't afford to blow this engine toooo much money in it!
Thanx y'all. DUECE
Last edited by 86'Bowtie; Mar 22, 2004 at 04:46 PM.
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Adjust it to idle as low as you can, won't hurt a thing if adjusted properly.
Too high an idle will do more harm, slamming the drivetrain when you put it in gear. At the levels you're talking, though, no particular cause for concern.
Too high an idle will do more harm, slamming the drivetrain when you put it in gear. At the levels you're talking, though, no particular cause for concern.
Thread Starter
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Joined: Nov 2003
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From: Texas
Car: Hugger Orange Camaro
Originally posted by five7kid
Adjust it to idle as low as you can, won't hurt a thing if adjusted properly.
Adjust it to idle as low as you can, won't hurt a thing if adjusted properly.
About how far out should i turn the screw?
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Lower the idle speed with the screw that the throttle arm rests on at idle.
Adjust the idle mixture screws for maximum manifold vacuum at idle (in gear if auto).
Adjust the idle mixture screws for maximum manifold vacuum at idle (in gear if auto).
Thread Starter
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Joined: Nov 2003
Posts: 247
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From: Texas
Car: Hugger Orange Camaro
Any recommendations? Fairly new to carbs.What would the outcome be if I only adjusted the idle and refrained from the mixture screws. Any way this could be easier?or seek professional help. Dunno I think most you guys are professional.
I'd appreciate some know how thanks,DUECE
I'd appreciate some know how thanks,DUECE
Last edited by 86'Bowtie; Mar 22, 2004 at 11:12 PM.
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From: Kissimmee, FL
Car: 1991 Camaro RS
Engine: 357cid
Transmission: T5 Swap
Axle/Gears: 10bolt 7.5" 3.23 soon to be 3.73
count yourself lucky... according to my tach(which i thiink is wrong becuz its v6 tach) i idle ate 1000 and in gear its about 1200rpm. i cant get it lower cuz i have edelbrock 600cfm on a fairly stack 305
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Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Originally posted by 86'Bowtie
Also do I need a vaccum gauge?
Also do I need a vaccum gauge?
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From: Fremont, CA
Car: 1987 Camaro v6 2.8l MPI
Engine: one that goes "vroom vroom"
Transmission: one that shifts
if the idle is set too low, wouldn't the car have a hard time warming up each morning? Maybe its just my car, but it seems kinda cold blooded, and just seems like it would stall out too much when its cold.
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From: Texas
Car: Hugger Orange Camaro
Five7kid- I adjusted the idle aproximately 1/4 turn counter-clock
wise and my idle dropped to 750ish-800 in park/600 in gear.
That's basically the point I originally wanted to set at.
However, I didn't alter the idle mixture screws and I found I am
getting better acceleration!Is it possible my idle may have been set too high for my vaccum?! Dunno chime in any thoughts.
Thanx, DUECE
wise and my idle dropped to 750ish-800 in park/600 in gear.
That's basically the point I originally wanted to set at.
However, I didn't alter the idle mixture screws and I found I am
getting better acceleration!Is it possible my idle may have been set too high for my vaccum?! Dunno chime in any thoughts.
Thanx, DUECE
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