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Unread 08-31-2009, 01:10 PM   #4007
Babyboomerboy
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Quote:
Originally Posted by phDog View Post
additional/even air intake. i figured just a 1" valve was not enough.
I think you a little short on air intake. If you go back and read how to build a UDS, you will see that the plan was for 3 1" holes a couple of inches off the bottom. Then install 3 3/4" threaded nipples into these holes. Cap off 2 of them and use your 1" valve on the third. Remember what all these guys say about changing the proven UDS plan on your first build, kiss.
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