# blown diff? .... Answer: YES!

**URL:** https://forums.speedlife.net/t/blown-diff-answer-yes/22070
**Category:** NYSpeed Automotive
**Created:** [December 24, 2006, 9:57am UTC](https://forums.speedlife.net/t/blown-diff-answer-yes/22070 "2006-12-24T09:57:50Z")
**Posts on this page:** 1
**Showing post:** 15

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### Author: ![mike125k](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mike125k/32/7282_2.png) [@mike125k](https://forums.speedlife.net/u/mike125k)
#### Post date: [December 25, 2006, 8:18pm UTC](https://forums.speedlife.net/t/blown-diff-answer-yes/22070/15 "2006-12-25T20:18:47Z")

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The bad thing with VC’s is they’re very hard to test with little or no torque being applied, ie: spinning a prop shaft by hand, jacking all 4 wheels up, etc. They usually need a fair amount of a velocity delta in order to start to shear the fluid causing the coupling to start to lock.

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