# Motor locking up after tranny install

**URL:** https://forums.speedlife.net/t/motor-locking-up-after-tranny-install/221121
**Category:** SON240sx Automotive
**Created:** [March 11, 2012, 9:35am UTC](https://forums.speedlife.net/t/motor-locking-up-after-tranny-install/221121 "2012-03-11T09:35:58Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![moulds](https://avatars.discourse-cdn.com/v4/letter/m/b2d939/32.png) [@moulds](https://forums.speedlife.net/u/moulds)
#### Post date: [March 11, 2012, 9:35am UTC](https://forums.speedlife.net/t/motor-locking-up-after-tranny-install/221121/1 "2012-03-11T09:35:58Z")

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jus put my rb n tranny in an now i cant manually turn engine over it locks up jus short of one revolution on the crank.engine turned over fine when they were separate…any ideas,drive shaft is not hooked up fyi

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### Author: ![sharpe\_corners](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sharpe_corners/32/5767_2.png) [@sharpe\_corners](https://forums.speedlife.net/u/sharpe_corners)
#### Post date: [March 11, 2012, 8:00pm UTC](https://forums.speedlife.net/t/motor-locking-up-after-tranny-install/221121/2 "2012-03-11T20:00:35Z")

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Did you check the timing belt, tensioners and timing like I said? sounds like the t belt slipped and your mashing valves