Idle Acceleration
Thread Starter
Drifting
Joined: Aug 2015
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Idle Acceleration
So...let's say your sitting on a flat surface at a stop light in your ZR-1. The light turns green. Does your ZR-1 accelerate under its own power well without hitting the gas?
My other sports car accelerates just by letting out on the clutch and no gas but the ZR-1 requires a little gas or will die. Trying to sort out if this is normal.
My other sports car accelerates just by letting out on the clutch and no gas but the ZR-1 requires a little gas or will die. Trying to sort out if this is normal.
Race Director
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From: Compound in the Grove, Ga.
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Everyone I have owned from stock to 500+hp with gears needed a bit of peddle to get moving unless it was going down hill.
Melting Slicks
Joined: Apr 2005
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From: Folsom CA
It's an interesting thought experiment to be sure, unfortunately I've nothing to contribute to the discussion.
I'm pretty sure I've never left a stop sign/light without my right foot being somewhere near the floor. ;-)
'Crabs
I'm pretty sure I've never left a stop sign/light without my right foot being somewhere near the floor. ;-)
'Crabs
Thread Starter
Drifting
Joined: Aug 2015
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Interesting. I once had an L98 90' that was the first stick I had really ever driven (other than a tractor). I remember it would die quite often near idle. I had always assumed I was just not good at shifting the car. I've had several stick shift cars since then and never had another car that would die near idle until my 94' ZR-1. I'm still getting used to the car. It will require a slightly different driving style. I normally would release the clutch until the gear grabs and then as I completely let out on the clutch begin to engage the throttle. The ZR-1 requires that I give it just a little bit of gas prior to full release of the clutch. Glad to hear that its behavior is normal.
Last edited by Atari_Prime; Oct 11, 2021 at 02:49 PM.
Le Mans Master
Joined: Sep 2000
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From: Bartlett IL
With cams and porting, first of all the idle will be set higher than stock. And u need to slip the clutch just a bit as it starts to roll.
Last edited by Dominic Sorresso; Oct 11, 2021 at 03:41 PM.
Team Owner
Joined: Aug 2004
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From: Park City Utah
Too many variables to make this comparison. It's about as worth while as using the "Peel-O-meter" to measure hp.
1st gear
Final drive ratio
Weight
Clutch engagement speed
Idle speed
Flywheel weight
Compression ratio.
On and on and on. My wife's old **** box Jeep TJ with a 4 cyl would start out in 1st w/no gas...in low range. That make it "better" than something else? Is that a meaningful comparison w/anything? Thing wouldn't go over 65 mph on flat ground.
1st gear
Final drive ratio
Weight
Clutch engagement speed
Idle speed
Flywheel weight
Compression ratio.
On and on and on. My wife's old **** box Jeep TJ with a 4 cyl would start out in 1st w/no gas...in low range. That make it "better" than something else? Is that a meaningful comparison w/anything? Thing wouldn't go over 65 mph on flat ground.
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Drifting
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Melting Slicks
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From: Mullica Hill New Jersey
Le Mans Master
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From: Bartlett IL
It likes to idle between 900-950. What’s also an important factor is getting the initial AE(acceleration enrichment) and off idle fueling/SA correct. Particularly w a modded motor, u want to make certain u have smooth and less radical transitions. In the end, you give the motor what it wants.