Author Topic: Pardon me... but what's the point of these???  (Read 1353 times)

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Offline CBJoe

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Pardon me... but what's the point of these???
« on: February 02, 2008, 10:56:54 AM »
Pardon my ignorance ???, but I remember staring at these plugs in the crankcase a while back and I still cant figure out what their purpose is (other than to hold the oil in the crankcase! ;)).

Did these serve some point in manufacturing?  Or does oil pool around these plugs that you cant drain via the normal oil change method.

Cheers.....Joe
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Offline CBJoe

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Re: Pardon me... but what's the point of these???
« Reply #1 on: February 02, 2008, 10:57:53 AM »
Sorry, '80 CB650C....
'07 Bonneville Black
'15 Moto Guzzi California 1400
CB750K2 Hot Rod Revival http://forums.sohc4.net/index.php/topic,171693.0.html
'65 CB77
'66 CM91 (C90'ish)

Offline Bob Wessner

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Re: Pardon me... but what's the point of these???
« Reply #2 on: February 02, 2008, 11:06:27 AM »
Maybe to provide access of some sort, but needed to be oil-tight? ???
We'll all be someone else's PO some day.

Offline paulages

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Re: Pardon me... but what's the point of these???
« Reply #3 on: February 02, 2008, 12:05:16 PM »
they are plugging the ends of where the oil galley was bored.
« Last Edit: February 02, 2008, 12:13:37 PM by paulages »
paul
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1974 CB550 (735cc)
1976 CB550 (590cc) road racer
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Offline CBJoe

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Re: Pardon me... but what's the point of these???
« Reply #4 on: February 02, 2008, 12:26:34 PM »
Thanks... now i can sleep at night  :)
'07 Bonneville Black
'15 Moto Guzzi California 1400
CB750K2 Hot Rod Revival http://forums.sohc4.net/index.php/topic,171693.0.html
'65 CB77
'66 CM91 (C90'ish)

Offline Raul CB750K1

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Re: Pardon me... but what's the point of these???
« Reply #5 on: February 02, 2008, 01:27:49 PM »
they are plugging the ends of where the oil galley was bored.

I have one plug in my CB350 and I always thought it was to provide for a pressure gauge.