The Ford Barn

GPierce · 02-28-2025, 05:20 PM

Anybody with a Mitchell overdrive using YAPP Studios Differential vent?

https://www.secretsofspeed.com/diffy-vent

radiation · 02-28-2025, 10:49 PM

Quote:

Originally Posted by GPierce

Anybody with a Mitchell overdrive using YAPP Studios Diffy vent?

https://www.secretsofspeed.com/diffy-vent

I have one installed for my Volvo overdrive!

whirnot · 02-28-2025, 10:50 PM

The vent that comes with the overdrive works fine, why not use it?

Y-Blockhead · 03-01-2025, 02:20 AM

Quote:

Originally Posted by whirnot

The vent that comes with the overdrive works fine, why not use it?

I think he is asking about a vent for the rear end, not the O/D.

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.

Bruce of MN · 03-01-2025, 05:09 AM

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.

Ray in La Mesa · 03-01-2025, 12:39 PM

Sponsored Links (Register now to hide all advertisements)

I did the same but used a 45* angle fitting and screwed a Zenith float valve into it.

Bruce of MN · 03-01-2025, 04:44 PM

Quote:

Originally Posted by Ray in La Mesa

I did the same but used a 45* angle fitting and screwed a Zenith float valve into it.

One of these?

https://www.brattons.com/ORIGINAL-ST...uctinfo/14300/

Was the 45 a pipe fitting? How did you adapt it?

duke36 · 03-01-2025, 06:58 PM

Install the Endy vent on the passenger side away from the large banjo gear.

Ray in La Mesa · 03-01-2025, 10:58 PM

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.

Ruth · 03-02-2025, 01:09 AM

Quote:

Originally Posted by Ray in La Mesa

I did the same but used a 45* angle fitting and screwed a Zenith float valve into it.

That sounds interesting. Do you have a picture of that?

GPierce · 03-02-2025, 10:52 AM

Quote:

Originally Posted by ray in la mesa

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.

1/8 npt

Benson · 03-02-2025, 03:19 PM

1. Model A Zenith FLOAT VALVE is 1/2 20 (NOT pipe thread)

Synchro909 · 03-04-2025, 04:14 PM

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!

Y-Blockhead · 03-04-2025, 05:08 PM

Quote:

Originally Posted by Synchro909

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!

I did the same and it still pushed oil out the tube. That is when I decided to use the Alemite vent on the axle tube. Never a drop now.

02-28-2025, 10:50 PM	#3
whirnot Senior Member Join Date: Mar 2013 Location: Bend Or. Posts: 1,080	Re: Differential Vent The vent that comes with the overdrive works fine, why not use it? __________________ Bill Worden 1929 Roadster 1929 Briggs Town Sedan 1930 Closed Cab pickup 1931 Coupe 2 Smith Motor Compressors 1951 Ford F1 High Desert Model A's

03-01-2025, 05:09 AM	#5
Bruce of MN Senior Member Join Date: May 2010 Location: VA Posts: 1,808	Re: Differential Vent 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.

03-01-2025, 12:39 PM	#6
Ray in La Mesa Senior Member Join Date: May 2010 Location: La Mesa Ca Posts: 1,273	Re: Differential Vent Sponsored Links (Register now to hide all advertisements) I did the same but used a 45* angle fitting and screwed a Zenith float valve into it.

03-01-2025, 06:58 PM	#8
duke36 Senior Member Join Date: Jun 2015 Posts: 1,425	Re: Differential Vent Install the Endy vent on the passenger side away from the large banjo gear.

03-01-2025, 10:58 PM	#9
Ray in La Mesa Senior Member Join Date: May 2010 Location: La Mesa Ca Posts: 1,273	Re: Differential Vent 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.

03-02-2025, 03:19 PM	#12
Benson Senior Member Join Date: May 2010 Location: Cen~Col - Central Highlands Posts: 2,757	Re: Differential Vent 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

03-04-2025, 04:14 PM	#13
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 8,041	Re: Differential Vent 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! __________________ I sometimes wonder what happened to the people who asked me for directions. Even at my age, I still like to look at a young, attractive woman but I can't really remember why.