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Old 05-28-2005, 04:34 PM   #1
G17
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Launch RPM??

What do you guys think is the best launch rpm for quarter mile if i have stock 15 inch steelies and stock tires??? Don't want too much wheelspin and don't want to bog my engine.


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Old 05-28-2005, 05:00 PM   #2
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You just answered your own question! For consistency (and clutch longevity) you want to dump the clutch at the minimum RPM that will not bog the motor. Some wheelspin is good as you would rather slip the tires than the clutch. As you will probably be bracket racing, it is best to have a consistant start that you can dial for.

Your car will be different than ours and you must try different launch RPM's to find your optimum. I would start around 2500. Good luck.
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Old 05-28-2005, 05:09 PM   #3
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This isn't a performance upgrade engine-related issue, G17...

Moving to Racing, Rally and Autocross - should get you more exposure for this question, let us know how you do in the quarter.
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Old 05-28-2005, 05:20 PM   #4
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Whoops, sorry posted in the wrong section, yea i noticed a slight bog launching at 2000, i guess i'll try launching at 2500 rpm. Yea in focus fanatics mag, they recommended launch to be at 3500 rpms, but that was with stock 16 inch rims.
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Old 05-30-2005, 11:11 AM   #5
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yea I always launch off of 3500 - 3700 and then shift at around 6500
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