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Old 10-19-2019, 02:55 PM   #1
Catchb52
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Default What is this hole in the timing cover for?

266 v8 has a 1.25" hole that goes into the timing cover just above the fuel pump. It did not have a plug in it when I got it. What went/goes in this hole? Can I just put a expanding plug in it?
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Old 10-19-2019, 08:32 PM   #2
Dealbreaker74
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Default Re: What is this hole in the timing cover for?

Its blocked already. Otherwise, the engine would puke oil everywhere.
Other models used a curved pipe here to fill the engine with oil. In that situation, the cover was machined for a hole.
You're good. No need for plugs.
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Old 10-19-2019, 10:10 PM   #3
Catchb52
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Default Re: What is this hole in the timing cover for?

That is the problem. It is not blocked and is puking oil all over.
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Old 10-20-2019, 01:41 AM   #4
Winchested
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Default Re: What is this hole in the timing cover for?

Ya that was the oil fill location on older engines i believe, yes you can use a plug to fill it. Why someone would have built it with a gaping hole there is beyond me.
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Old 10-20-2019, 06:40 AM   #5
Catchb52
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Default Re: What is this hole in the timing cover for?

I noticed it was open when I rebuilt it but forgot about it until I went to start it. I was thinking I was missing a part.

Thanks.
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Old 10-20-2019, 02:44 PM   #6
Winchested
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Default Re: What is this hole in the timing cover for?

Ya put a cup style expansion plug in there with some sealant around it. Hopefully you don't have to take the timing cover back off to get a straight whack at it.
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