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  #1 (permalink)  
Old 09-02-2021, 11:55 PM
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I have worn valve seals and worn guides.

Would it be an improvement to add a breather on the back of the intake manifold ?

Thanks.
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Old 09-03-2021, 04:07 AM
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Quote:
Originally Posted by CLV8 View Post
I have worn valve seals and worn guides.

Would it be an improvement to add a breather on the back of the intake manifold ?

Thanks.
No sir, this is not a crankcase pressure/blow-by issue.
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Old 09-04-2021, 08:48 PM
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Quote:
Originally Posted by CLV8 View Post
I have worn valve seals and worn guides.

Would it be an improvement to add a breather on the back of the intake manifold ?

Thanks.
Oliver, you have mentioned worn guides and oil seals several times. Have you measured your guides to determine how much they have worn?


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Old 09-12-2021, 04:35 AM
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Oliver, you have mentioned worn guides and oil seals several times. Have you measured your guides to determine how much they have worn?


Ed
Ed, there are so much wear that no need to measure them. When you take a valve in hand you can move it very easily on the guide (0.03" to 0.04" wear).
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Old 09-12-2021, 11:07 AM
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Originally Posted by CLV8 View Post
Ed, there are so much wear that no need to measure them. When you take a valve in hand you can move it very easily on the guide (0.03" to 0.04" wear).

If the valves can be noticeably moved side to side you probably have worn guides and they would be the source of the oil entering the intake ports.

If we accept the worn guides answer to the What question, the questions that remain to be answered are the Why did they fail and the How to fix questions so as to avoid a repeat performance.

BTW .003 to .004" stem to guide clearance while not desireable, on a street driven car it is also not that bad. The amount of oil you are showing in the ports belies .003 or .004" clearance.


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Last edited by eschaider; 09-12-2021 at 11:13 AM.. Reason: Spelling & Grammar
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Old 09-12-2021, 11:36 AM
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The OP post a "spark plug" gap clearance on his valve guides. Post the YouTube.....gotta see this.
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Old 09-12-2021, 01:42 PM
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Quote:
Originally Posted by eschaider View Post
If the valves can be noticeably moved side to side you probably have worn guides and they would be the source of the oil entering the intake ports.

If we accept the worn guides answer to the What question, the questions that remain to be answered are the Why did they fail and the How to fix questions so as to avoid a repeat performance.

BTW .003 to .004" stem to guide clearance while not desireable, on a street driven car it is also not that bad. The amount of oil you are showing in the ports belies .003 or .004" clearance.


Ed
Ed, WHY is the question !!! and currently I still don't understand WHY my valve guides are worn !!!
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