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Author Topic: Overdrive D help  (Read 447 times)

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march2021

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Overdrive D help
« 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

amgba

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Re: Overdrive D help
« Reply #1 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
American MGB Association
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phone/text: 773-769-7084

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march2021

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Re: Overdrive D help
« Reply #2 on: May 12, 2021, 09:38:52 AM »
Thank you, I will. John

Art

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Re: Overdrive D help
« Reply #3 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
Art Isaacs
AMGBA Tech Staff
chfwrench@aol.com


 

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