Umbrella seals don't stay put on the valve guide. They ride up and down with the valve and just kinda "umbrella" over the guide so oil doesn't go down in it. For actual sealing they're kinda weak, but for clearance for more lift they're great.
4.3L to ?? swap.
- Thread starter DeCaff2007
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DeCaff2007
I'm Awesome
Didn't need a second set. The blue seals popped right off. When installed on the CORRECT valve guides, I needed a socket and a ball peen hammer to install them. Before that, I was able to press them on with my thumb. Told you all something didn't seem right.
Yes I did use the "lil plastic condoms" lol. If you refer to the video link I posted earlier, that's where I learned to use those plastic sleeves.
Oh really? I'll go back and try again today. I'd rather the valve stems held in by seals and not masking tape.
I was thinking more like having two sets--one for intake, one for exhaust.
DeCaff2007
I'm Awesome
Oh, I see. Well, that could work, but it's getting increasingly difficult to get parts in a timely manner. It took nearly a week for those seals to come in. Had to order them from Rock Auto. Normally, I'd go to the local Advance Auto. Their inventory is slim. Lately everytime I go in there, whatever I need has to be ordered. If I'm going to order something and have to wait for it, it's coming from Rock Auto.
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sewlow
Bitchin' Stitchin'
Valves are held in place by keepers.
Seals are for oil control.
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DeCaff2007
I'm Awesome
Yes, I understand that. Let me clarify that statement. The umbrella seals I have don't slide over the valve stems very easily. They can be used to keep the valves in their respective guides temporarily, until the springs come in and I can assemble the valve train correctly.
DeCaff2007
I'm Awesome
Springs came in the other day. That was too easy. Pics or it didn't happen, lol
BTW, modern day valve spring compressors are JUNK. I borrowed this one from my F-I-L and it performed flawlessly. I'm guessing this tool has to be from the 60's or 70's when he was in his racing hey-day.
Otherwise, I'm still debating what to do about that crankshaft. Is .001" out of tolerance really going to make a difference on a rod journal?
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BTW, modern day valve spring compressors are JUNK. I borrowed this one from my F-I-L and it performed flawlessly. I'm guessing this tool has to be from the 60's or 70's when he was in his racing hey-day.
Otherwise, I'm still debating what to do about that crankshaft. Is .001" out of tolerance really going to make a difference on a rod journal?
A thousandth outside tolerance on something spinning at 5k rpm? Maybe not, but how mad are you gonna be when it does, and you gotta tear it apart again?
DeCaff2007
I'm Awesome
Good point. See, it seems I'm hearing 10 different things from 10 different machinists. Some aren't equipped to grind the crank down. Some say it's easier to just buy a new crank. Have yet to talk to a shop that can actually do the work.
Seeing as how Thanks-for-nothing-giving is fast approaching, time and $ are a premium right now. Sigh.
I know it ain't what you wanted to hear. Does your FIL have any friends that do that kind of work? Race guys usually know the difference between someone who's good and someone who's good enough...
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