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Old 04-02-2009, 10:21 PM   #11
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Believe it or not I found those bolts in the pool of oil. I have the LIM off and that gasket replaced. So I'm just waiting on the upper now. Then where the coolant block drain plug is. Going to change coolant, seafoam it, change the oil, and put in new spark plugs.
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Old 04-02-2009, 10:29 PM   #12
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What I've been able to find is that there are two block drain on the SII 3800. One front and one back. The manual says that these are normally not removed for cooling system service or flush and are difficult to remove and replace.

You just may want to play with those and carry on with the build up.
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Old 04-02-2009, 11:48 PM   #13
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Glad I saw this and remembered. The only ways to drain the block are to remove the freeze plugs or the knock sensors. From personal experience the knock sensors would be my choice of things to drain.

Spec for tightening is 14ft lbs. Don't over tighten, or it'll make your sensors more sensitive.

Here'* pics of the block.
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