| [GMCnet] Valve tick update [message #363141] |
Mon, 29 March 2021 21:04 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
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Here's an update on the valve tick /squirting lifter on my 455
Jim,
it looks like you are right on the bogus lifters. I pulled #1 out and found a broken flow restrictor?
A piece was lodged in the check valve holding it open
Here is the disassembled lifter, a 'good lifter is shown below it.
[img]http://www.gmcmhphotos.com/photos/data/7358/medium/Broken.jpg[/img]
now, about that good lifter, when out of the vehicle, on the workbench, I tried to push the plunger down, it does not move. Not even a little with my full weight on it for a solid minute, no oil came out of the hole on the side. not even a drip. I repeated this on 3 other lifters. I was on the phone with Matt Colie and he tells me thats not right ( as I suspected! )
But they look OK otherwise
Other news, Rocker #7, the coked up one, is worn on the pivot.
So I think it's new lifters and rockers at least
Compression looks ok, 195+- across the board except #2 which is about 180-185
Keith Vasilakes
Mounds View MN
76 exRoyale
MicroLevel
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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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![[img]http://www.gmcmhphotos.com/photos/data/7358/medium/Broken.jpg[/img]](http://www.gmcmhphotos.com/photos/data/7358/medium/Broken.jpg){kind=link}