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Old 01-22-2019, 10:21 AM   #1
russcc
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Default Vacuum question

Took a 2 bolt timing cover of a 59 engine. The distributor was a 21A, crab. The 59 had double sheave water pumps so I assume it may be a truck engine. In the vacuum inlet on the timing cover was a brass plug with a washer. See photo.

What would be the purpose of blocking off the source for vacuum to the distributor brake ?
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Old 01-22-2019, 10:47 AM   #2
flatjack9
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Default Re: Vacuum question

Ignorance?
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Old 01-22-2019, 11:01 AM   #3
bitterbierce
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Default Re: Vacuum question

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Originally Posted by russcc View Post
Took a 2 bolt timing cover of a 59 engine. The distributor was a 21A, crab. The 59 had double sheave water pumps so I assume it may be a truck engine. In the vacuum inlet on the timing cover was a brass plug with a washer. See photo.

What would be the purpose of blocking off the source for vacuum to the distributor brake ?
Just guessing but perhaps it was a stationary engine before and someone thought advance was no longer needed (big mistake)
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Old 01-22-2019, 02:52 PM   #4
BUBBAS IGNITION
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Default Re: Vacuum question

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Ignorance?
Didnt want to have a vacuum leak ?????
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Old 01-22-2019, 06:33 PM   #5
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Default Re: Vacuum question

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Didnt want to have a vacuum leak ?????
I assume that's a joke.
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Old 01-22-2019, 06:35 PM   #6
Flathead Fever
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Default Re: Vacuum question

Maybe some one stuck an old go-fast distributor or maagneto on there with no vacuum advance
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Old 01-23-2019, 07:06 AM   #7
russcc
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Default Re: Vacuum question

It looked all original when I got it, including the 21A distributor. Doesn't sound like there was a logical answer. The engine came form Maine if that means anything
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Old 01-23-2019, 05:17 PM   #8
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Default Re: Vacuum question

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I assume that's a joke.
Yes it was " Bubba" humor. I get them in all the time with the vacuum port on the distributor plugged with something ...........
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Old 01-24-2019, 05:21 PM   #9
russcc
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Default Re: Vacuum question

Then that's the answer, common ignorance.
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Old 01-26-2019, 12:00 PM   #10
V12Bill
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Default Re: Vacuum question

Plug looks like the access to the carb jets.
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