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#1 |
Senior Member
Join Date: Dec 2014
Location: Germantown,TN
Posts: 573
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Anybody with a Mitchell overdrive using YAPP Studios Differential vent?
https://www.secretsofspeed.com/diffy-vent Last edited by GPierce; 03-01-2025 at 09:39 AM. |
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#2 | |
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Join Date: Nov 2014
Posts: 21
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#3 |
Senior Member
Join Date: Mar 2013
Location: Bend Or.
Posts: 1,080
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The vent that comes with the overdrive works fine, why not use it?
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#4 | |
Senior Member
Join Date: Jul 2011
Location: Redondo Beach, CA
Posts: 6,637
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Tom Endy has an article on this. https://www.santaanitaas.org/wp-cont...ntial-Vent.pdf That's me and my rear end he is referring to. Pictures are of my rear with vent. Last edited by Y-Blockhead; 03-02-2025 at 12:18 PM. |
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#5 |
Senior Member
Join Date: May 2010
Location: VA
Posts: 1,807
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My version. I decided I wanted to keep the vent vertical. It will make lubing the shaft there a bit more work, but now no drips at the rear wheels.
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#6 |
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Join Date: May 2010
Location: La Mesa Ca
Posts: 1,273
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#7 | |
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Join Date: May 2010
Location: VA
Posts: 1,807
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https://www.brattons.com/ORIGINAL-ST...uctinfo/14300/ Was the 45 a pipe fitting? How did you adapt it? |
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#8 |
Senior Member
Join Date: Jun 2015
Posts: 1,425
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Install the Endy vent on the passenger side away from the large banjo gear.
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#9 |
Senior Member
Join Date: May 2010
Location: La Mesa Ca
Posts: 1,273
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Yes, like that but a repro. I don't know what the fitting size is but it was in my box of brass fittings.I got lucky as the threads on the float valve matched the brass fitting. I don't think it is a pipe fitting.
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#10 |
Senior Member
Join Date: May 2016
Location: Glide, Oregon
Posts: 1,440
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That sounds interesting. Do you have a picture of that?
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Ruth "Sometimes you really DO need to read the whole thread" |
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#11 |
Senior Member
Join Date: Dec 2014
Location: Germantown,TN
Posts: 573
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1/8 npt
Last edited by GPierce; 03-02-2025 at 10:58 AM. |
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#12 |
Senior Member
Join Date: May 2010
Location: Cen~Col - Central Highlands
Posts: 2,757
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1. Model A Zenith FLOAT VALVE is 1/2 20 (NOT pipe thread)
Last edited by Benson; 03-02-2025 at 03:23 PM. Reason: correction |
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#13 |
Senior Member
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 8,040
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I tried drilling a vent through one of the bolts that hold the trumpets on. I put it at the top on the side opposite the crown wheel and the hole facing up. There must be a lot of oil being thrown about in there because it leaked a lot so I made another with a small plastic tube on it (like Mitchell uses on their O/D) and secured the open end up near the spring mount in the cross member I left plenty of slack in it to allow for the movement of the axle. Much better!
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#14 | |
Senior Member
Join Date: Jul 2011
Location: Redondo Beach, CA
Posts: 6,637
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