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#1
01-09-2010, 05:10 PM
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Tdc
I didn't know if this was the right sub forum to post this but it does have to do with a BMW 325i. When i was taking the engine head off to replace the gasket. The chilton's book said to align the piston to TDC before removal. I did so, but was wondering why you have to? Is it some kinda compression stroke ratio or what? Thanks.
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#2
01-09-2010, 05:38 PM
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Re: Tdc
Do a Google ''Youtube head gasket repair''I like using a compression guage on cylinder 1 @ Tdc!
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#3
01-15-2010, 08:17 AM
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Re: Tdc
Not a compression issue, more of an interference isssue. If that engine is an interference engine (I don't know that it is), if you don't have the #1 piston at TDC and the cam at no. 1 TDC position you'll hit valves and bend them.
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