barrel length and gas tubes

josh55 · 03-26-2008, 01:22 AM

my yugo will not eject the round after it is fired. the round get stuch in the breech and when I say stuck I mean stuck. I am wundering it the berral is to short. if it is to short for crown to the gas port is there any thing to do about it? someone said to make the port biger but I question that. please help

GlockMeister · 03-26-2008, 01:37 AM

Check that the gas valve is in the right position. If it is, clean the entire firearm thoroughly. For disassembly/reassembly for cleaning see this link.

Collecting and Shooting the SKS Carbine - Disassembly and Reassembly

For gas valve info, see this link. For shooting ammunition, it should be in the like 2 o clock position. For shooting blanks for the grenade launcher, it goes in the 12 o clock position. and to take it out, 12 o clock then push down and towards you if I remember correctly. Clean it our also. If it needs to be fixed or parts replaced, search or google Yugo gas valve. But I'm sure it's either gas valve in wrong spot or dirty.

Collecting and Shooting the Military Surplus Rifle (2006) - Surplusrifle.com

marion57 · 03-26-2008, 03:33 AM

Quote:

Originally Posted by josh55

my yugo will not eject the round after it is fired. the round get stuch in the breech and when I say stuck I mean stuck. I am wundering it the berral is to short. if it is to short for crown to the gas port is there any thing to do about it? someone said to make the port biger but I question that. please help

DO NOT make port bigger!
Follow Glock's post!!

SwedeSteve · 03-26-2008, 04:43 AM

I have to agree with above. Strip it down and clean her real good. Pay special attention to the chamber. Make sure your gas valve is installed and set correctly.

Big Dog · 03-26-2008, 04:52 AM

Uhh . . . did you shorten the barrel? If so, why?

josh55 · 03-26-2008, 10:09 AM

I bought it from someone who cut the barrel I got there old thing for cheep. I thought the barrel may be too shot and there would not be time to bild up the back preshure. witch will couse a slower pistion return. I think the caesing has to much time to espand prior to ejection. if the barrel is to short is there a remidy?
thank you

nighthawk80 · 03-26-2008, 10:18 AM

Pictures really help!!!!

jmp8927 · 03-26-2008, 10:55 AM

Since the barrel has been shortened, one way way to remedy it would be to load your own ammunition using some pistol powder which will burn faster allowing most of the powder to burn by the time the bullet reaches the end of the barrel. Or you could drill the gas port a tad bit bigger. Doing that you risk messing something up unless you know what you're doing. I personally wouldn't try it at current time if I had a rifle like yours. And as mentioned above, pics would help a lot.

josh55 · 03-26-2008, 06:32 PM

what should i get a pic of the gas tube or what he did to the barral?

texnmidwest · 03-26-2008, 07:15 PM

I am not a gunsmith but if the length of the barrel is longer than the gas tube then I don't think it would make much difference in cycling the bolt. I could be wrong though.

jmp8927 · 03-26-2008, 08:13 PM

Well the gas is pressurized as long as the bullet is in the barrel and preventing the gas from shooting out the end. The gas hole is smaller on longer barrels SKSs as they are on AKs. The reason is that pressure is held for a longer period in a longer barrel. In a shorter barrel, the bullet leaves the end before sufficient pressure is built to cycle the action completely. I hope I explained that well enough...

josh55 · 03-26-2008, 10:03 PM

I used a .17 brass brush to clean out the port. the cartreg still did not cycal however it did not jam for the frist 5 rounds I could manuly cycal it after firing it.then it jamed and i have to take it all apart. so maybe I am moveing in the right direction. now can a sks be to clean? someone told me that could be the problem I dont think so.

I just had another thought will a muzzal breake do the trick?

josh55 · 03-27-2008, 12:10 AM

here is my plans for this sks

GlockMeister · 03-27-2008, 12:15 AM

That looks like the correct gas valve and it's in the right position for shooting ammo. But that is NOT the correct gas tube and it looks like it would leak. If so, there's your problem. Where the gas tube meets the gas valve. IF that seal is not solid, it will leak. Also, if it cab move back upon firing the gun, it's escaping on each shot. Is that gas tuber one piece or 4 or 5 pieces? If 4 or 5 pieces, you got many leaks. Hope you didn't pay much for that thing. Might see if they'll take it back? Have a feeling you're stuck with it.

My honest suggestion, take it to a reputable gun dealer, tell them the problem (and if they're good they'll know before you ask by how it looks) and have them inspect it. Are you sure it isn't or wasn't stolen and someone just butched it to try and hide the fact?

josh55 · 03-27-2008, 12:34 AM

I bought this gas tube for it TAPCO-World's finest shooting and military gear -

all the # are the same ang I know the guy and it was him tring something I thought it would be a fue project to play with and learn something abot semi-autos.

josh55 · 03-27-2008, 12:46 AM

I gess the last post did not go through. I bought this gas tube TAPCO-World's finest shooting and military gear -. my buddy I got this from did not want to wast anymore time with it and I am always looking for a challenging project to learn more.

wunhunglo · 03-27-2008, 03:51 AM

AAAH those pictures explain a lot!! Well & truly bubba'd! The chances of that rifle ever working properly as a semi are remote. Even with the paratroop SKS-M there was about 3" from the gas take-off to the muzzle. It looks like you are not getting enough gas back to fully operate the mechanism;
Firstly, clutching at a straw, I assume you've stripped & cleaned it properly, if not do so now?? If thorough cleaning of the gas system doesn't work, then as somebody else has apparently told you, you could try opening the gas take-off hole with the next size of drill bit, I doubt you can make it any worse, if that doesn't work, then........

Remedy 1: Relocate the gas block, shorten the gas tube & piston by 3-4" & drill new gas take-off hole in barrel.

Remedy 2: Remove or plug the gas tube/block completely and use the rifle purely as a straight pull bolt action rifle!

Remedy 3: Get a smith to fit a new/or replacement barrel.

Remedy 4: Try a float test, take it to a flooded quarry/sand pit etc. and throw into deepest part & see if it will float.

Where's the foresight??????????

Is it still Legal???????????

jmp8927 · 03-27-2008, 06:51 AM

I just quick checked my Norinco, and if I were to cut it down to that length, the barrel would be 14-15 inches long. So basically, you have a short barreled rifle in need of a tax stamp to make it legal. Now as far as the gas tube goes, that may or may not be a problem. True, and first look it looks aftermarket and weird. But y'all look at the picture again. It's an original tube with everything removed, and some kind of plastic stuff slid back over the smaller part of the tube. So that's my evaluation.

Now remody...as stated above, its not going to work with the gas port where it is. Plain and simple. It need to move back at least 3 inches to work. Also you could remove it and is it was a manual pull bolt as also was suggested before. But before you do anything, you need to sit down and think about it. That rifle is illegal. You need to figure out if its worth the risk having an illegal rifle that doesn't work properly, and if you really value it, is it worth a $200 tax stamp. With $200, you could buy a good condition SKS that does work. If you decided to dump the one you have, you could just take it too a gunsmith and get him to remove that barrel and put another on. I don't know how much that would cost though. If you don't want to do that, you could just have him completely disassemble the entire rifle, and sell it as parts, then buy another SKS.

*edit

Oh yeah! Something else you might could do. Weld that muzzle break on! When you weld it on, it legally becomes part of the rifle, so your barrel would be legal again. Of course, that's rather permanent and you'd still have feed issues.

josh55 · 03-27-2008, 10:06 AM

thank you for the info it is always a learning prosses. I gess I will put a long muzzal breake to ensure it is legal. and try your idias and if that dose not work gess I am out a case of beer and I learned something thank you all

jmp8927 · 03-27-2008, 10:14 AM

You're quite welcome and I hope you get it fixed up and working! It looks great like that! You just need to fix the gas tube and make it legal and you'll have a sweet set up for close ranges!

03-26-2008, 01:22 AM	#1
josh55 Member Join Date: Mar 2008 Posts: 19	barrel length and gas tubes my yugo will not eject the round after it is fired. the round get stuch in the breech and when I say stuck I mean stuck. I am wundering it the berral is to short. if it is to short for crown to the gas port is there any thing to do about it? someone said to make the port biger but I question that. please help

03-26-2008, 01:37 AM	#2
GlockMeister Senior Member Join Date: Dec 2007 Location: Northern Illinois Posts: 5,360	Check that the gas valve is in the right position. If it is, clean the entire firearm thoroughly. For disassembly/reassembly for cleaning see this link. Collecting and Shooting the SKS Carbine - Disassembly and Reassembly For gas valve info, see this link. For shooting ammunition, it should be in the like 2 o clock position. For shooting blanks for the grenade launcher, it goes in the 12 o clock position. and to take it out, 12 o clock then push down and towards you if I remember correctly. Clean it our also. If it needs to be fixed or parts replaced, search or google Yugo gas valve. But I'm sure it's either gas valve in wrong spot or dirty. Collecting and Shooting the Military Surplus Rifle (2006) - Surplusrifle.com __________________ I'd rather be tried by 12 than carried by 6!

03-26-2008, 04:43 AM	#4
SwedeSteve Bullet Maintenance !! Join Date: Feb 2007 Location: The anchor point, Alaska Posts: 10,251 Images: 1	I have to agree with above. Strip it down and clean her real good. Pay special attention to the chamber. Make sure your gas valve is installed and set correctly. __________________ Thank God we don't get as much Government as we pay for! -Will Rogers

03-26-2008, 04:52 AM	#5
Big Dog Moderator Join Date: Mar 2002 Location: Tallahassee, Florida Posts: 10,201	Uhh . . . did you shorten the barrel? If so, why? __________________ Moderator of: AR15/M16, M14/M1A, New/Beginning Shooters and Militaria/Collectables.

03-26-2008, 10:55 AM	#8
jmp8927 Senior Member Join Date: Nov 2007 Location: Walterboro, SC Posts: 1,136 Images: 15	Since the barrel has been shortened, one way way to remedy it would be to load your own ammunition using some pistol powder which will burn faster allowing most of the powder to burn by the time the bullet reaches the end of the barrel. Or you could drill the gas port a tad bit bigger. Doing that you risk messing something up unless you know what you're doing. I personally wouldn't try it at current time if I had a rifle like yours. And as mentioned above, pics would help a lot. __________________ Doing the unexpected makes the unexpected the expected and thus the expected becomes the unexpected.

03-26-2008, 10:09 AM	#6
josh55 Member Join Date: Mar 2008 Posts: 19	I bought it from someone who cut the barrel I got there old thing for cheep. I thought the barrel may be too shot and there would not be time to bild up the back preshure. witch will couse a slower pistion return. I think the caesing has to much time to espand prior to ejection. if the barrel is to short is there a remidy? thank you

03-26-2008, 10:18 AM	#7
nighthawk80 Senior Member Join Date: Nov 2006 Location: Just south of Central Indiana Posts: 403	Pictures really help!!!!

03-26-2008, 06:32 PM	#9
josh55 Member Join Date: Mar 2008 Posts: 19	what should i get a pic of the gas tube or what he did to the barral?

03-26-2008, 07:15 PM	#10
texnmidwest Listen to yur Inner Hippo Join Date: Dec 2007 Location: South east Wisconsin Posts: 3,357	I am not a gunsmith but if the length of the barrel is longer than the gas tube then I don't think it would make much difference in cycling the bolt. I could be wrong though. __________________ "Quando Omni Flunkus Moritati" (If all else fails play dead)

03-26-2008, 08:13 PM	#11
jmp8927 Senior Member Join Date: Nov 2007 Location: Walterboro, SC Posts: 1,136 Images: 15	Well the gas is pressurized as long as the bullet is in the barrel and preventing the gas from shooting out the end. The gas hole is smaller on longer barrels SKSs as they are on AKs. The reason is that pressure is held for a longer period in a longer barrel. In a shorter barrel, the bullet leaves the end before sufficient pressure is built to cycle the action completely. I hope I explained that well enough... __________________ Doing the unexpected makes the unexpected the expected and thus the expected becomes the unexpected.

03-26-2008, 10:03 PM	#12
josh55 Member Join Date: Mar 2008 Posts: 19	I used a .17 brass brush to clean out the port. the cartreg still did not cycal however it did not jam for the frist 5 rounds I could manuly cycal it after firing it.then it jamed and i have to take it all apart. so maybe I am moveing in the right direction. now can a sks be to clean? someone told me that could be the problem I dont think so. I just had another thought will a muzzal breake do the trick? Last edited by josh55; 03-26-2008 at 11:03 PM. Reason: Automerged Doublepost

03-27-2008, 12:15 AM	#14
GlockMeister Senior Member Join Date: Dec 2007 Location: Northern Illinois Posts: 5,360	That looks like the correct gas valve and it's in the right position for shooting ammo. But that is NOT the correct gas tube and it looks like it would leak. If so, there's your problem. Where the gas tube meets the gas valve. IF that seal is not solid, it will leak. Also, if it cab move back upon firing the gun, it's escaping on each shot. Is that gas tuber one piece or 4 or 5 pieces? If 4 or 5 pieces, you got many leaks. Hope you didn't pay much for that thing. Might see if they'll take it back? Have a feeling you're stuck with it. My honest suggestion, take it to a reputable gun dealer, tell them the problem (and if they're good they'll know before you ask by how it looks) and have them inspect it. Are you sure it isn't or wasn't stolen and someone just butched it to try and hide the fact? __________________ I'd rather be tried by 12 than carried by 6! Last edited by GlockMeister; 03-27-2008 at 12:22 AM.

03-27-2008, 12:34 AM	#15
josh55 Member Join Date: Mar 2008 Posts: 19	I bought this gas tube for it TAPCO-World's finest shooting and military gear - all the # are the same ang I know the guy and it was him tring something I thought it would be a fue project to play with and learn something abot semi-autos.

03-27-2008, 12:46 AM	#16
josh55 Member Join Date: Mar 2008 Posts: 19	I gess the last post did not go through. I bought this gas tube TAPCO-World's finest shooting and military gear -. my buddy I got this from did not want to wast anymore time with it and I am always looking for a challenging project to learn more.

03-27-2008, 03:51 AM	#17
wunhunglo Senior Member Join Date: Dec 2007 Location: currently "Sunny West Africa" Posts: 1,649	AAAH those pictures explain a lot!! Well & truly bubba'd! The chances of that rifle ever working properly as a semi are remote. Even with the paratroop SKS-M there was about 3" from the gas take-off to the muzzle. It looks like you are not getting enough gas back to fully operate the mechanism; Firstly, clutching at a straw, I assume you've stripped & cleaned it properly, if not do so now?? If thorough cleaning of the gas system doesn't work, then as somebody else has apparently told you, you could try opening the gas take-off hole with the next size of drill bit, I doubt you can make it any worse, if that doesn't work, then........ Remedy 1: Relocate the gas block, shorten the gas tube & piston by 3-4" & drill new gas take-off hole in barrel. Remedy 2: Remove or plug the gas tube/block completely and use the rifle purely as a straight pull bolt action rifle! Remedy 3: Get a smith to fit a new/or replacement barrel. Remedy 4: Try a float test, take it to a flooded quarry/sand pit etc. and throw into deepest part & see if it will float. Where's the foresight?????????? Is it still Legal??????????? Last edited by wunhunglo; 03-27-2008 at 06:10 AM.

03-27-2008, 06:51 AM	#18
jmp8927 Senior Member Join Date: Nov 2007 Location: Walterboro, SC Posts: 1,136 Images: 15	I just quick checked my Norinco, and if I were to cut it down to that length, the barrel would be 14-15 inches long. So basically, you have a short barreled rifle in need of a tax stamp to make it legal. Now as far as the gas tube goes, that may or may not be a problem. True, and first look it looks aftermarket and weird. But y'all look at the picture again. It's an original tube with everything removed, and some kind of plastic stuff slid back over the smaller part of the tube. So that's my evaluation. Now remody...as stated above, its not going to work with the gas port where it is. Plain and simple. It need to move back at least 3 inches to work. Also you could remove it and is it was a manual pull bolt as also was suggested before. But before you do anything, you need to sit down and think about it. That rifle is illegal. You need to figure out if its worth the risk having an illegal rifle that doesn't work properly, and if you really value it, is it worth a $200 tax stamp. With $200, you could buy a good condition SKS that does work. If you decided to dump the one you have, you could just take it too a gunsmith and get him to remove that barrel and put another on. I don't know how much that would cost though. If you don't want to do that, you could just have him completely disassemble the entire rifle, and sell it as parts, then buy another SKS. edit Oh yeah! Something else you might could do. Weld that muzzle break on! When you weld it on, it legally becomes part of the rifle, so your barrel would be legal again. Of course, that's rather permanent and you'd still have feed issues. __________________ Doing the unexpected makes the unexpected the expected and thus the expected becomes the unexpected. Last edited by jmp8927; 03-27-2008 at 06:54 AM. Reason: Automerged Doublepost*

03-27-2008, 10:06 AM	#19
josh55 Member Join Date: Mar 2008 Posts: 19	thank you for the info it is always a learning prosses. I gess I will put a long muzzal breake to ensure it is legal. and try your idias and if that dose not work gess I am out a case of beer and I learned something thank you all

03-27-2008, 10:14 AM	#20
jmp8927 Senior Member Join Date: Nov 2007 Location: Walterboro, SC Posts: 1,136 Images: 15	You're quite welcome and I hope you get it fixed up and working! It looks great like that! You just need to fix the gas tube and make it legal and you'll have a sweet set up for close ranges! __________________ Doing the unexpected makes the unexpected the expected and thus the expected becomes the unexpected.