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.
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Get a second set of the blue seals, and slap 'em in?
Did you use the lil' plastic condoms on the valve stems when you pushed the seals in place? REALLY easy to rip the seal lips off the seal body if the condoms aren't in place.
Oh really? I'll go back and try again today. I'd rather the valve stems held in by seals and not masking tape.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.
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.I was thinking more like having two sets--one for intake, one for exhaust.
Valves are held in place by keepers.I'd rather the valve stems held in by seals and not masking tape.
Valves are held in place by keepers.
Seals are for oil control.
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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?Springs came in the other day. That was too easy. Pics or it didn't happen, lol
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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?
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...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.