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21
Transmission Related Discussion / Re: Overdrive D help
« Last post by Art on May 14, 2021, 06:31:50 AM »
Hi John,

Basically, yes, the vacuum is generated from the intake manifold. 

The URL below will take you to a UK site that has a pretty good explanation and a link within to another site with more.

http://www.mgb-stuff.org.uk/dod.htm

Hope that helps you.

Safety Fast!

Art
22
Transmission Related Discussion / Re: Overdrive D help
« Last post by march2021 on May 12, 2021, 09:38:52 AM »
Thank you, I will. John
23
Transmission Related Discussion / Re: Overdrive D help
« Last post by amgba on May 11, 2021, 10:30:13 PM »
You may get a faster response if you post on our Facebook group at: www.facebook.com/groups/americanmgbassociation
24
Transmission Related Discussion / Overdrive D help
« Last post by march2021 on May 11, 2021, 03:25:36 PM »
Hello, I inherited a 1964 MGB (3 bearing main) with a 4 speed with overdrive installed but not hooked up. The model D uses a vacuum solenoid on the firewall. I have found the yellow and yellow/red stripe and white wires, and etc. The relay and everything is in the car and appears correct (?). However, from where does the solenoid on the firewall get vacuum? The manifold I assume? I need help with the correct (factory) installation. Thank you, John
25
69th Annual Glenwood Springs Rallye, Denver, CO. www.mgcc.org/rallye-glenwood-springs .
26
Upcoming Show Announcements / Sept. 19, 2021 - British Car Show, St. Louis, MO
« Last post by amgba on May 10, 2021, 05:08:12 PM »
British Car Show, St. Louis, MO. www.stlouismgclub.com.
27
Upcoming Show Announcements / Sept. 17-18, 2021 - British Car Show, Natchez, MS
« Last post by amgba on May 10, 2021, 05:03:53 PM »
Brits on the Bluff, Natchez, MS. www.msemc.org.
28
Upcoming Show Announcements / Sept. 12, 2021 - British Car Show, Cincinnati, OH
« Last post by amgba on May 10, 2021, 05:03:12 PM »
British Car Show, Cincinnati, OH. www.bccgc.com.

29
Cars & Motorcycles of England, Hope Lodge, Ft. Washington, PA. www.dvtr.org .
30
General Discussion / Re: Brakes Dragging
« Last post by Art on April 27, 2021, 08:47:07 AM »
Hi Zack,

I totally agree with David on the flexible lines.  They can cause all kinds of issues as he described.  I will make sure to replace them every time I do a brake job on my B.

I didn't see whether the issue was with the front or rear brakes that were dragging?  Or if you had you used the handbrake anytime before the issue?  You just mentioned the handle was not up, so I would think maybe you did while parked.

If asked, I'd bet you can't remember when you last greased the handbrake cable.  There's a zerk for this about mid way up the cable from the rear axle that tends to be forgotten. In fact, in writing this I'm reminded I didn't do it myself when I did my spring tune-up a couple of weeks ago. 

Rust or hardened grease can build-up in the cable casing and the cable can bind and hold the rear brakes, even after the handle is dropped.  Like the 'check valve' action of the rubber lines, the cable can slowly (or suddenly) release, freeing the brakes without any evidence of an issue with the exception that all the paint has been burned-off your rear drums from the heat.

Hope that helps you.  Let us know what you find.

Safety Fast!

Art 

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