I'm giving the 327 in my Chevelle a mild refresh. One of the tasks is fresh valve seals. Please give me a little advice about what seals to use.
I pulled the springs off #2 to see what seals are currently installed. Here's what I found (trying to attach picture but)
Valves have 2 grooves so I can use o-rings
Valves had crusty remnants of dried up old o-rings
Intake valve also had a black, soft, rubber like positive type seal on the guide
Exhaust only had o-ring
I'm not sure if the guides are properly machined for positive seals.
Intake guide OD = 0.566"
Exhaust guide OD = 0.571"
My Summit valve spring kit included a set of blue viton seals with an ID of 0.500". I can probably get these on the guides with a little convincing, but I think the guides are too big. Am I right?
Should I track down positive seals to fit on my guides? Does such a beast exist?
Should I just use an o-ring and umbrella seal on all 16 valves?
Also, the intake and exhaust valves have different retainer set ups (also in a picture I hope shows up). When I put it back together, do I use this setup or the retainers/locks that came with my spring set?
Thanks for your help - this is the first time I've done this level of work.
A little background if you want it...
Car is a 67 Chevelle wagon that's been in the family since '71
Engine was built in mid-80s and has about 100k on it
Engine sat a lot from mid 90s - mid 00s and smokes because the seals are dry
This project started when my 40+ year old damper separated. I figured, if I had to tear it apart enough to replace the damper (including drilling and tapping the crank), I should put a fresh timing chain in it.
Then, I figured, since I'm in this far, I should do something about the lifter that's been clacking on and off for 10 years so why not put a cam and lifters in it (getting a Summit 1102 204/214 cam and lifters to replace the 929? cam in it now).
This of course made me think a fresh set of springs would be a good idea and since I'm doing that why not put fresh seals in.
I'm really fighting the urge to pull the front sheet metal and paint all the engine bay...
I'm sure some of you can relate...
I pulled the springs off #2 to see what seals are currently installed. Here's what I found (trying to attach picture but)
Valves have 2 grooves so I can use o-rings
Valves had crusty remnants of dried up old o-rings
Intake valve also had a black, soft, rubber like positive type seal on the guide
Exhaust only had o-ring
I'm not sure if the guides are properly machined for positive seals.
Intake guide OD = 0.566"
Exhaust guide OD = 0.571"
My Summit valve spring kit included a set of blue viton seals with an ID of 0.500". I can probably get these on the guides with a little convincing, but I think the guides are too big. Am I right?
Should I track down positive seals to fit on my guides? Does such a beast exist?
Should I just use an o-ring and umbrella seal on all 16 valves?
Also, the intake and exhaust valves have different retainer set ups (also in a picture I hope shows up). When I put it back together, do I use this setup or the retainers/locks that came with my spring set?
Thanks for your help - this is the first time I've done this level of work.
A little background if you want it...
Car is a 67 Chevelle wagon that's been in the family since '71
Engine was built in mid-80s and has about 100k on it
Engine sat a lot from mid 90s - mid 00s and smokes because the seals are dry
This project started when my 40+ year old damper separated. I figured, if I had to tear it apart enough to replace the damper (including drilling and tapping the crank), I should put a fresh timing chain in it.
Then, I figured, since I'm in this far, I should do something about the lifter that's been clacking on and off for 10 years so why not put a cam and lifters in it (getting a Summit 1102 204/214 cam and lifters to replace the 929? cam in it now).
This of course made me think a fresh set of springs would be a good idea and since I'm doing that why not put fresh seals in.
I'm really fighting the urge to pull the front sheet metal and paint all the engine bay...
I'm sure some of you can relate...