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Author Topic: '71 head o-rings  (Read 641 times)

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Offline jb750k1

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'71 head o-rings
« on: May 11, 2011, 07:44:56 PM »
Totally confused on '71 750 o-rings under the cam towers. Two seat at the oil passage orifices, are there others???

Thanks,

jb, Texas
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Offline Gordon

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Re: '71 head o-rings
« Reply #1 on: May 11, 2011, 07:55:58 PM »
There are rubber "puck" seals that cover the access holes for the head bolts. 
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Offline jb750k1

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Re: '71 head o-rings
« Reply #2 on: May 11, 2011, 08:13:11 PM »
Got the pucks, number of o-ring seals are the issue. thx
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Offline Silverback

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Re: '71 head o-rings
« Reply #3 on: May 11, 2011, 08:30:44 PM »
There is also one at each end (2 total) that go under each cam tower. You will see the round recesses on the same plane (intake side) as the the oil jets. These feed the the outer cam bearing surfaces.
« Last Edit: May 11, 2011, 11:18:21 PM by Silverback »
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Chris
"It's hard to define soul. You get it in art. You get it in music, and occasionally you get it in machinery."
78 CB750F racer
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71 CB750K (rusty rod)
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Offline bryanj

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Re: '71 head o-rings
« Reply #4 on: May 11, 2011, 10:43:26 PM »
As the cam towers are not handed there is a hole to feed oil at each end so on the head there is one restrictor jet for each tower plus a small recess where the other hole on the tower is for you to fit an o ring to blank off the unwanted outlet and make sure all oil goes through the tower total 4 o rings
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