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05-14-2011, 07:14 PM
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#1 |
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Registered User
Join Date: Mar 2010
Location: St Charles MO
Posts: 481
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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
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#2 |
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Registered User
Join Date: Aug 2010
Location: Hutto,Texas!!
Posts: 160
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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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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 |
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05-14-2011, 09:40 PM
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#3 |
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Senior Member
 
Join Date: Feb 2010
Location: Lambertville, MI
Posts: 1,866
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Re: Head work
Umbrella seals require machining to fit.
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05-14-2011, 10:06 PM
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#4 |
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Registered User
Join Date: Jun 2010
Location: gadsden, alabama
Posts: 468
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Re: Head work
yep gotta trim down the guides
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Due to financial constraints, the light at the end of the tunnel will be shut off until further notice |
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05-14-2011, 10:27 PM
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#5 |
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Registered User
Join Date: Aug 2010
Location: Hutto,Texas!!
Posts: 160
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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 |
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05-14-2011, 10:41 PM
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#6 |
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Senior Member
Join Date: Feb 2010
Location: Lambertville, MI
Posts: 1,866
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Re: Head work
Push on umbrellas sounds cool. And cheap: no machining cost!
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05-14-2011, 10:41 PM
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#7 |
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Registered User
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
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#8 | |
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Registered User
Join Date: Mar 2010
Location: St Charles MO
Posts: 481
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Re: Head work
Quote:
Last edited by Born Lucky; 05-15-2011 at 07:26 AM. Reason: spell |
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05-15-2011, 08:43 AM
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#9 |
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Registered User
Join Date: Aug 2009
Location: Detroit MI
Posts: 1,209
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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
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#10 | |
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Registered User
Join Date: Mar 2010
Location: St Charles MO
Posts: 481
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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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05-15-2011, 10:38 AM
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#11 |
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Senior Car Nut
Join Date: Jan 2008
Location: shellman bluff, GA
Posts: 1,411
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Re: Head work
bottom groove, top groove is for the keeper. go slowly when you release the spring compressor and guide the retainer as it's coming up so as not to pinch the o-ring
what year are these heads? I thought everthing for the last 30 years was machined for the umbrella's
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Larry Last edited by fleetsidelarry; 05-15-2011 at 10:49 AM. |
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05-15-2011, 11:24 AM
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#12 | |
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Registered User
Join Date: Mar 2010
Location: St Charles MO
Posts: 481
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Re: Head work
Quote:
I am going to install both O Ring and umbrella style. Fel-Pro SS10058 Fel-Pro SS5112 Thanks for the info First time is always a learning curve! |
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