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When heating a new engine, what position should the piston be?

When heating a new engine, what position should the piston be?

Old 03-23-2009, 08:09 PM
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Default When heating a new engine, what position should the piston be?

Hey guys,

Just wanted your opinions on breaking in a new engine. When heating it with a hair dryer or heat gun, should the piston be at BDC? Does it make a difference?

Thanks
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Old 03-23-2009, 08:11 PM
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yes
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Old 03-23-2009, 08:28 PM
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when breaking in a new engine allways put the piston at BDC
i do it all the time old or new when you shut it off put the piston BDC
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Old 03-23-2009, 08:34 PM
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+1 on the bdc while heating the engine. The only time I wouldn't want the piston bdc is if you were taking off the back plate. Keep in the practice of moving your piston to bdc whenever possible to avoid forgetting to do and ruining a motor after you left the piston at the top after a run. Always check after you run. It's a routine you need to follow, one for breaking in, the other for taking the motor apart since they are the opposites.
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Old 03-23-2009, 10:04 PM
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BDC...........ALWAYS...........FOREVER
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Old 03-24-2009, 05:00 AM
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Do i need to put it a bdc after everyrun even after its broken in?
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Old 03-24-2009, 05:38 AM
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Originally Posted by cassidy
Do i need to put it a bdc after everyrun even after its broken in?
YES always make sure the piston is down. Just roll the flywheel until it's easy and floats.
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Old 03-24-2009, 07:26 AM
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if its not running, it should be at BDC. Rule of thumb
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