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When do secondaries kick in on 351 |
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KENO 
Grand Poobah 
Joined: June-06-2004 Location: United States Status: Offline Points: 11112 |
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 Posted: October-05-2021 at 6:30am |
If you want to never ever kill a fuel transfer tube O ring again, then get Holley part number 26-115. it's their newer style tube and end seal setup for a 4160. They're almost people proof.  PS ........some of those hardware store O rings aren't gas resistant and might work for a little while before they decide to leak.  |
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nobrainsd
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Joined: August-13-2015 Location: San Diego Status: Offline Points: 157 |
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Posted: October-05-2021 at 10:55am |
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Buna N rubber o rings should be here today from Mc Master Carr. 3/8 x 1/4 x 1/16. 100 pcs/$2.38 Lifetime supply!
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nobrainsd
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Joined: August-13-2015 Location: San Diego Status: Offline Points: 157 |
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Posted: October-10-2021 at 11:10am |
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Just an update. My new needle and seat finally arrived at O'Reillys. Took a couple of days. Should have ordered from Summit. Parts I ordered from Summit were fulfilled by their Sparks Nevada warehouse and came the next day when sent regular mail :)
The old needle didn't appear different than the new one. The viton tip felt flexible and didn't have any ridges or worn areas. But, obviously, it wasn't easily sealing on the seat. When I installed the new needle and seat it was easy to set the float height and the fuel bowl level was right on with no overflowing j tubes. I should have just been patient and replaced the offending parts when I couldn't adjust them to function properly rather than trying to find some sweet spot in the set up. Boat fires right up and runs great. Secondaries kick in under load and were never the problem. Restricted flow to the primaries was the issue.
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MrMcD
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Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3750 |
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Posted: October-10-2021 at 2:03pm |
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A WIN, good for you. It sucks when boats don’t run right.
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KENO
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Joined: June-06-2004 Location: United States Status: Offline Points: 11112 |
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Posted: October-11-2021 at 8:11am |
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Good to see that in the end, you didn't have to do anything oddball and all it needed was new needle and seat assemblies.
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nobrainsd wrote: