03-20-2022, 01:12 PM | #1 |
Member
Join Date: Jul 2019
Location: Union City, CA
Posts: 57
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vacuum source?
not knowing much about flatheads and learning as I go, can someone identify this hole in intake manifold? looks like a vacuum source and possibly even a vacuum leak if not being used? and if so best way to seal?
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03-20-2022, 01:31 PM | #2 |
Senior Member
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,950
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Re: vacuum source?
Could that hole relates to the heat riser? Look here:
https://www.google.com/search?q=flat...wt4-u-8NkL2C1M Here's some interesting reading. https://fordbarn.com/forum/showthrea...3993&showall=1 |
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03-20-2022, 02:29 PM | #3 |
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Join Date: May 2010
Location: East Hartford, Ct
Posts: 5,898
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Re: vacuum source?
Poke a wire into the hole to see what path it takes.
If it shows up at the heat riser port, tap a suitable size for a screw to plug it.
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03-21-2022, 06:25 AM | #4 |
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Re: vacuum source?
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