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What causes a torque spike?

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Old Jun 24, 2008 | 03:03 PM
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Default What causes a torque spike?

I just got my WS6 back from the dyno and I'm trying to figure out why I got a HUGE torque spike. I can't see why it suddenly shoots skyward and then drop back down so severly. Any ideas???
Attached Thumbnails What causes a torque spike?-scan0001-1800-x-1275-.jpg  
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Old Jun 24, 2008 | 03:29 PM
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stall converter?
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Old Jun 24, 2008 | 03:58 PM
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X2 on the stall convertor!
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Old Jun 24, 2008 | 04:17 PM
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Tach lead going to the dyno stack dropped out, no biggie. It's not real, just a dyno reading "error".
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Old Jun 24, 2008 | 09:57 PM
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The stall converter was my concern, too. My trans builder said that once the tranny was done the stall converter was "very loose". I figured it needed to be tuned. Once it was on the dyno those numbers were what I ended up with. My tuner said, however, that when he was driving it "sometimes it felt like a beast, and every once in a while it drove like a v6 Firebird". I'm guessing my converter is locking up when it want's. It's supposedly a Precision Indus. 3200 Stall. Hmmmm.... so far it's been doing fine with me on the street since it breaks the tires loose in all 4 gears. I'm still a little lost, though. Thanks for the help.
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Old Jun 25, 2008 | 08:21 PM
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is that a graph of a n2o pull?
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Old Jun 25, 2008 | 08:34 PM
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No, it's all N/A.... no power adders.
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Old Jun 25, 2008 | 09:24 PM
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Data reading error.
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