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« Last post by Jaggedscars on December 30, 2025, 05:50:50 PM »
Unless its excessive amounts of oil coming from the breather, it sounds normal and should improve as the piston-cylinder-rings break in. Racing v-twins used in go-cart & lawnmower racing typically use catch cans as the result of higher pression, rpm, etc... Continue to monitor and record your findings.
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« Last post by Isotope on December 30, 2025, 05:23:42 PM »
Light smoke coming from pcv breather. About 2 hours run time using valvoline vr1 20w-50. It is not enough smoke to show up on video. Briggs vanguard 23hp, stock. I have not had it past about 4200rpm for a few seconds. Trying to do a gradual break in. Lots of heat cycles. Noticed the oil was a few onces low too after a couple hours of run time from a fresh fill up.
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« Last post by Shay King on December 30, 2025, 01:44:01 AM »
Thanks for your reply Keith. I did try heating up the bung but not freezing the filler neck. I may try that. A gyro builder friend with a lot of engineering skill has offered to make a thread chaser for me as a possible solution.
With hindsight, I think I shouldn’t have welded around the threaded portion. I should have kept the weld on the outer flange.
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« Last post by Kamcoman77 on December 29, 2025, 05:30:23 PM »
Did you try leaving the steel neck in the freezer for a few hours? That might shrink it enough to screw into the bung. You might want to heat up the bung before trying reassembly.
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« Last post by Shay King on December 29, 2025, 11:02:01 AM »
Hi again guys,
I just finished welding up one of my wing tanks today. Unfortunately when I tried to screw in the filler neck it wouldn’t go further than about half a turn. Before welding it would screw in all the way by hand. The bung is aluminium and the neck is steel, both from Aircraft spruce. Any suggestions on how to fix this welcome.
Happy New Year everyone.
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« Last post by Isotope on December 28, 2025, 09:41:05 PM »
What engine is this? Seems a bit of context would be helpful since I've not been following your other threads.
Briggs and Stratton 23hp Vanguard.
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« Last post by Brock on December 28, 2025, 08:52:45 PM »
What engine is this? Seems a bit of context would be helpful since I've not been following your other threads.
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« Last post by Isotope on December 28, 2025, 04:50:28 PM »
Briggs and Stratton 23hp Vanguard. On the spark plug with a temp gun im seeing about 225* at idle and about 260* at 3600rpm. This is with no load on the motor and a powerful fan setting directly in front of it. Do these temps sound about right? At 3600rpm the temp seems like it would keep climbing a little but i throttle it down at about 260* then it cools back down to 225* ish.
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« Last post by pappyadkins on December 25, 2025, 09:27:02 AM »
I hope y'all have a great day!!!
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« Last post by Brock on December 20, 2025, 07:54:07 PM »
The first sight-guage was S.S. but I found an Aluminum one that in the hand feels like a pound lighter. Next I wanted a magnetic drain plug. With an old fitting adapter some magnets and good O'l JB weld the plug was a cinch.
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