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05-14-2011, 07:14 PM | #1 |
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Location: St Charles MO
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Head work
I am installing new valve seals and need some help. It is my first time and I removed my first valve and noticed that OEM seals are o ring style. Now my replacement seals are umbrella style. Do I need to replace the o ring or just use the new style?
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05-14-2011, 09:06 PM | #2 |
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Location: Hutto,Texas!!
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Re: Head work
Have used both. The o ring style is oe.the umbrella seal work great .
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05-14-2011, 09:40 PM | #3 |
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Re: Head work
Umbrella seals require machining to fit.
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05-14-2011, 10:06 PM | #4 |
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Location: gadsden, alabama
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Re: Head work
yep gotta trim down the guides
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05-14-2011, 10:27 PM | #5 |
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Location: Hutto,Texas!!
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Re: Head work
Depends on the style of seal.If they have a ring around the base you will need to have the guides machined.The old style rebuilder umbrella seals just pushed on the guide.Done alot of cylinder heads with no issues.
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65 c-10 swb,bbw,step,402/t350,sold!! 1979 c10 Silverado,250,auto,gonna have a 3/5 drop,and twice pipes!Sold Bought the wife a 84 gmc short step |
05-14-2011, 10:41 PM | #6 |
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Join Date: Aug 2009
Location: Detroit MI
Posts: 1,209
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Re: Head work
Post a picture of the seals you have and we can I dentify them for you .. if it is a late model head some are machined from the factory for seals that grip the guide.. Other than that a simple umbrella seal does just that it does not contact the guide simply makes the oil run over the top not down the guide ..
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05-15-2011, 07:25 AM | #7 |
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Location: St Charles MO
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Re: Head work
I check the item number (Sealed Power ST-2001) and they require machine work.I am going to return them and get a set that does not require machining. Now should I purchase o ring style or get the umbrella style that requires no machining. I have searched that some people have used (installed) both types of sealed on the same valve.
Last edited by Born Lucky; 05-15-2011 at 07:26 AM. Reason: spell |
05-15-2011, 08:43 AM | #8 |
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Location: Detroit MI
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Re: Head work
use both , it's just a bit more protection .... o ring goes on after the spring is compressed ... Believe me , in Detroit I have seen people use the wrong seals .. You may want to check the retainer to guide clearance to make sure the seal is not too tall.........
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05-15-2011, 09:15 AM | #9 | |
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Location: St Charles MO
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Re: Head work
Quote:
Now when I install the O Ring do they go on the first groove or second? |
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05-14-2011, 10:41 PM | #10 |
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Join Date: Feb 2010
Location: Lambertville, MI
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Re: Head work
Push on umbrellas sounds cool. And cheap: no machining cost!
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