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  #11  
Old 10-10-2017, 01:51 PM
Jakeroub Jakeroub is offline
 
Join Date: Dec 2016
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I would expect a longer (stronger) spring to make the short stroking worse.
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  #12  
Old 10-10-2017, 03:10 PM
howardhuge howardhuge is offline
 
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Location: nc
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as above...Mic Op rod piston and cylinder...replace every spring with new, fail to cycle is a gas issue. I have shot counter bored barrels before with no effect on gas cylinder....ck gas port Dia.Ill bet the Cyl and piston are junk.
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  #13  
Old 10-10-2017, 06:10 PM
jimthompson502002 jimthompson502002 is offline
 
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Location: La Crosse, Wisconsin
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Quote:
Originally Posted by Jakeroub View Post
I would expect a longer (stronger) spring to make the short stroking worse.
Precisely.

If not, it's a gas problem/excessively worn piston. Piston .526" to minimum .5255", but internal wear on the g.c. is also very common, and they tend to arrive very close to each other.

Need to gauge cylinder, rod, but the spring is probably a contributing factor.
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  #14  
Old 10-10-2017, 10:24 PM
glindes glindes is offline
 
Join Date: Mar 2014
Location: DE
Posts: 264
Default lock screw poppet valve open, maybe?

gas cyl lock screw poppet valve open? held open with crud?
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  #15  
Old 10-10-2017, 11:05 PM
lapriester lapriester is offline
 
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Location: Cobb, N California
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Quote:
Originally Posted by Jakeroub View Post
I would expect a longer (stronger) spring to make the short stroking worse.
That's almost never the case. The counterbore coupled with the shorter spring are more than likely disrupting the proper gas pulse. A weak spring or shorter one allows the op rod to move before the gas pulse is sufficient to fully function the rifle and it short strokes. I have heard that a too deep counterbore will almost always result in Garand malfunctions. The gas system is not a regulated system. It relies on it's as built design to provide the gas it needs to function. Disrupt that enough and it short strokes.
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  #16  
Old 10-10-2017, 11:29 PM
Parkr1942 Parkr1942 is offline
 
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Location: Louisville, Ky
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How deep is the counterbored and internal diameter? I had a counterbored barrel that finctioned fine with 3/8 bore and 7/16 depth.
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  #17  
Old 10-12-2017, 07:57 PM
SA1942 SA1942 is online now
 
Join Date: Apr 2016
Location: Missouri
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Do you remember if the spring was manufactured by Wolfe? I put one in my first garand and it short stroked. Replaced it with one from Orion and had no issues after that.
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  #18  
Old 10-13-2017, 06:41 AM
snuffy1a snuffy1a is offline
 
Join Date: May 2012
Location: Pittsburgh,PA
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As a matter of fact,I do have a spring coming from Orion. Also, I have on order a set of gas cylinder gauges from Amazon and some ammo loaded for the Garand coming from CMP.
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  #19  
Old 10-13-2017, 10:11 AM
lapriester lapriester is offline
 
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Quote:
Originally Posted by snuffy1a View Post
As a matter of fact,I do have a spring coming from Orion. Also, I have on order a set of gas cylinder gauges from Amazon and some ammo loaded for the Garand coming from CMP.
Just remember that the plug gauges may sometimes give you a false reading of gas cylinder spec. Cylinders often wear uneven and oblong internally and plug gauges won't measure that accurately.
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  #20  
Old 10-13-2017, 10:15 AM
snuffy1a snuffy1a is offline
 
Join Date: May 2012
Location: Pittsburgh,PA
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Thanks for the info. I have multiple Garands, so I'll probably check them all.
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