valve seals
Thread Starter
Instructor
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
valve seals
Planning on replacing valve seals and orings..Any recommendations whether or not to change anything else while im in the heads?Its a 1984 c4 with 78,000 miles..
thanx for any input
thanx for any input
Thread Starter
Instructor
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
i was thinking about springs,push rods, and the rocker arms..The prices through rock auto are very good..all the parts come in under 100$..thats including the spring compressor...
Racer
Joined: Jun 2017
Posts: 311
Likes: 24
From: Ohio
Springs might not be a bad idea but I would just check over heads closely. Checking things like valve seats, guides, and if valves have any pitting. Also if you lap them, check to make sure valves are not to recessed into seats.
Drifting
Joined: May 2007
Posts: 1,426
Likes: 165
From: Motor City
Careful when installing, many people use a deep well socket (12mm if I recall) to pound the seal on. I wasn't' successful going that route as the socket bottomed out on the rocker stud, not seating the seal all the way.
Kent Moore J-42109 is the correct install socket for seating properly. Check Ebay.
Kent Moore J-42109 is the correct install socket for seating properly. Check Ebay.
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Thread Starter
Instructor
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
Careful when installing, many people use a deep well socket (12mm if I recall) to pound the seal on. I wasn't' successful going that route as the socket bottomed out on the rocker stud, not seating the seal all the way.
Kent Moore J-42109 is the correct install socket for seating properly. Check Ebay.
Kent Moore J-42109 is the correct install socket for seating properly. Check Ebay.
i will look for that tool...thanx..
Thread Starter
Instructor
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
Careful when installing, many people use a deep well socket (12mm if I recall) to pound the seal on. I wasn't' successful going that route as the socket bottomed out on the rocker stud, not seating the seal all the way.
Kent Moore J-42109 is the correct install socket for seating properly. Check Ebay.
Kent Moore J-42109 is the correct install socket for seating properly. Check Ebay.
just found it on ebay for 10$....cool
Thread Starter
Instructor
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
[QUOTE=MikeP84;1597103704]Springs might not be a bad idea but I would just check over heads closely. Checking things like valve seats, guides, and if valves have any pitting. Also if you lap them, check to make sure valves are not to recessed into seats.[/QUOT
can i ask if you would recomend the umbrella type seals or oem?
can i ask if you would recomend the umbrella type seals or oem?
Racer
Joined: Jun 2017
Posts: 311
Likes: 24
From: Ohio
Honestly I have only built one motor and have no experience with oem style seals. Im not sure if they are the old o ring style or not but I will say I like my umbrella style. Probably just quality of parts, personal experience, and personal opinion on which to use.
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
not trying to spend your money, but this would be an excellent time to consider doing a cam swap and new timing chain.
Last edited by mtwoolford; Apr 30, 2018 at 09:22 PM.
Drifting
Joined: May 2007
Posts: 1,426
Likes: 165
From: Motor City
Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
I would pull the heads and do the valve guides (if needed), valve job, seals and springs. 78,000 miles is a good time to freshen up the heads. They will be as good as new and you'll gain lost hp. Do it right and you're good for a long time.
Racer
Joined: Jun 2017
Posts: 311
Likes: 24
From: Ohio
I agree if you have a local shop who can do it for reasonable price.