halftrackinfo
drive train => engine => Topic started by: steve1973 on February 24, 2020, 06:04:48 PM
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Last week I had some great weather so it was time to drive it 4 miles into town to the local auto shop to start on some engine work. I have some lifters to replace.
(http://www.surfacezero.com/g503/data/500/medium/20200220_164104.jpg)
(http://www.surfacezero.com/g503/data/500/medium/20200220_164053.jpg)
(http://www.surfacezero.com/g503/data/500/medium/20200220_164120.jpg)
At the shop and the hood off I noticed I had a cracked cylinder head. The head came off last Friday and taken to a specialist to get repaired.
(http://www.surfacezero.com/g503/data/500/medium/20200218_145817.jpg)
Today, Monday, I removed the carb, intake/exhaust manifold to get access to the front lifters. Got the lifter block removed and replaced the two that were noisy with NOS ones I got from Liberty Engineering. But I found one more giving me problems. There are three parts to the lifter and they are: body, unit and plunger. The spring loaded plunger is rock solid. I've tried pliers, hammer and a vice to compress the unit but no budge. I need one more plunger. HELP PLEASE!!
(http://www.surfacezero.com/g503/data/500/medium/20200218_145904.jpg)
(http://www.surfacezero.com/g503/data/500/medium/20200224_133901.jpg)
(http://www.surfacezero.com/g503/data/500/medium/20200224_152014.jpg)
(http://www.surfacezero.com/g503/data/500/medium/20200224_150531.jpg)
(http://www.surfacezero.com/g503/data/500/medium/20200224_151513.jpg)
Thanks!
Steve A.
541-914-2916
htmotorpool@gmail.com
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I don't have any suggestions about the stuck lifter; however, I still wanted to say that I enjoyed your pictures. Can't wait until we can hop in ours and drive 4 miles somewhere. At least you found the bad one while you were in there I guess.
Corey
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A few years back at the MVPA convention in Petaluma, CA someone had mentioned that old Cadillac V-8 lifters were very similar to the White engine and may work. I bought a few used ones to compare and the body and unit are different but I think the plungers are close enough to be interchangeable. In a panic I checked eBay and found some at a reasonable price and ran out to the garage to get the Cadillac ones I have to compare. Again, the plunger was not compressible. OK, so I put the plunger in the unit and guess what. It was compressible!! WTF!! Sorry for the language but this stumps me. So, I tried all 12 on my spare engine plungers that were all rock solid by them selves and guess what, they all compressed!! WTF?? OK, I re checked the three bad ones I removed from the engine. They compress!! I have no clue why only in the unit they compress. I do not see a valve in it but will retry to install one tomorrow afternoon and see what happens.
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Steve,
I had the same problem when I rebuilt my engine and if I remember correctly you have to gently push in a small wire or punch up in the "unit" and it will release the plunger.
Give that a try..
Paul
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Steve,
I had the same problem when I rebuilt my engine and if I remember correctly you have to gently push in a small wire or punch up in the "unit" and it will release the plunger.
Give that a try..
Paul
Paul,
Yes, I learned that trick to separate or put the two together. My problem was the plunger spring compression. I wasn't able to do this when I was working on the engine earlier today. I think I got it figured out though and will try it tomorrow.
Steve A.
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I believe I got my problem all figured out. Lifters are all installed and my cracked head is repaired and ready to pick up. I hope to have the halftrack back on it's feet on Monday.
Steve A.