WA/Guarder Feeding Nozzle Probs

nic_s · September 27th, 2005, 16:52

Hi Guys,
The gun in question is a SV Prokiller F5, but the solution should apply to all WA .45s. Last night I installed a Guarder feeding nozzle (the blue one) and a Guarder mag seal rubber. Dry fired it a few times, and everything was great. This morning I go to test it with BBs, and it won't fire at all. The nozzle seems to get stuck in the forward position, so as the slide cycles back it gets stuck. I took the slide off, and it looks like the little runners that connect the nozzle to the slide are too big or something, because they barely move at all. So I took the whole thing apart again, and to my dismay found that not only were the runners significantly worn down, but the very tip of the nozzle, the part that shoots gas at the BB, was somewhat damaged as well. Also, the mag seal has a small chunk ripped out of it, in the shape of an elongated rectangle. I can't for the life of me figure out what's wrong. Could it be a manufacturer's defect? Did I install it wrong? Any help is appreciated, as always. Just in case it makes a difference, here are the upgrades:

Metal Slide
Guarder full aouto hammer
Guarder feeding nozzle
Guarder chamber
CP match trigger
CP mag release mechanism
Upgraded recoil/hammer spring
Run on propane

Another possibility I just thought of is the fact that the frame has been sanded down and clearcoated. I suppose technically this could affect surface to surface tolerances, but it seems unlikely, considering the problem lies in the slide itself.

MadMax · September 28th, 2005, 12:15

The mag rubber issue is a chronic issue with WA GBBs. They're replacable at least.

The damaged nozzle tip makes me think that you're having a loading issue. Check to see if your mag fingers (the retaining bits which prevent bbs from squirting out of your mag) are damaged. Double feeds or premature feeds (bbs which eject on the way back) can cause nozzle damage when it slams forward and a bb is loose in the breech area.

As to the stuck nozzle, is your blowback oring in place? They sometimes blow out or get really loose (with too much silicone application) and bind between the nozzle body and oring seating.

nic_s · September 30th, 2005, 04:29

It seems that the problem lies in mating a metal slide with a Guarder feeding nozzle. The runners on the nozzle are too big. I'm going to sand them down a bit and see if that helps.

Mantelope · September 30th, 2005, 13:27

That's almost definitely the problem. I had to do that when I put a metal slide on my SVI 5" with the same Guarder nozzle. Just file a tiny bit, and move it around a bit in the slide to see if it's good... repeat and so on.

nic_s · September 30th, 2005, 14:33

Excellent, that's good news. If it works we can move this thread to the solutions board!

nic_s · October 25th, 2005, 06:11

Update: I've sanded down the nozzle, and it cycles great now, but it just blew out another mag seal. WTF? Nic needs YOUR help, desperately!

Mantelope · October 25th, 2005, 13:44

What do you mean by blew out? FYI, WA mag rubbers only last about a thousand rounds on propane.

nic_s · October 26th, 2005, 03:44

A chunk of it was actually torn out, and the thing was literally brand new.

Stealth · October 26th, 2005, 12:39

I've had the same thing happen to me, but I ran out of rubbers to test the mod, so I don't know whether its the problem.

On the bottom of the nozzle is the bb loading arm, right? If you look at the underside of the arm, you'll see that the bottom starts out flat, and then there is an abrupt change in direction and it starts sloping downwards towards the gas chamber. Take some sandpaper and sand down that abrupt angle change, and see whether it helps.

nic_s · October 26th, 2005, 16:04

I'll try that. Another possibility that I thought of is the mag release. Could it be that the CP mag release holds the mag too high?

Stealth · October 26th, 2005, 19:00

It happens on my stock mag release as well, so that isn't the problem.

I guess one could argue that the aftermarket slide makes the entire blowback chamber sit too low.

Just wondering, is the tip of your feeding nozzle dented?

nic_s · October 27th, 2005, 16:50

Yes it is. I don't think the slide has anything to do with it though, since the gun functioned great with the stock loading nozzle.

nic_s · November 12th, 2005, 17:18

Bump, any more help greatly appreciated.

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September 27th, 2005, 16:52	#1
nic_s Trader rating Join Date: Oct 2004 Location: BC	WA/Guarder Feeding Nozzle Probs Hi Guys, The gun in question is a SV Prokiller F5, but the solution should apply to all WA .45s. Last night I installed a Guarder feeding nozzle (the blue one) and a Guarder mag seal rubber. Dry fired it a few times, and everything was great. This morning I go to test it with BBs, and it won't fire at all. The nozzle seems to get stuck in the forward position, so as the slide cycles back it gets stuck. I took the slide off, and it looks like the little runners that connect the nozzle to the slide are too big or something, because they barely move at all. So I took the whole thing apart again, and to my dismay found that not only were the runners significantly worn down, but the very tip of the nozzle, the part that shoots gas at the BB, was somewhat damaged as well. Also, the mag seal has a small chunk ripped out of it, in the shape of an elongated rectangle. I can't for the life of me figure out what's wrong. Could it be a manufacturer's defect? Did I install it wrong? Any help is appreciated, as always. Just in case it makes a difference, here are the upgrades: Metal Slide Guarder full aouto hammer Guarder feeding nozzle Guarder chamber CP match trigger CP mag release mechanism Upgraded recoil/hammer spring Run on propane Another possibility I just thought of is the fact that the frame has been sanded down and clearcoated. I suppose technically this could affect surface to surface tolerances, but it seems unlikely, considering the problem lies in the slide itself. __________________ ...and she's terribly partial to the periwinkle blue.

September 28th, 2005, 12:15	#2
MadMax Delierious Designer of Dastardly Detonations Trader rating Join Date: Dec 2001 Location: in the dark recesses of some metal chip filled machine shop	The mag rubber issue is a chronic issue with WA GBBs. They're replacable at least. The damaged nozzle tip makes me think that you're having a loading issue. Check to see if your mag fingers (the retaining bits which prevent bbs from squirting out of your mag) are damaged. Double feeds or premature feeds (bbs which eject on the way back) can cause nozzle damage when it slams forward and a bb is loose in the breech area. As to the stuck nozzle, is your blowback oring in place? They sometimes blow out or get really loose (with too much silicone application) and bind between the nozzle body and oring seating. __________________ Want nearly free GBB gas?

September 30th, 2005, 04:29	#3
nic_s Trader rating Join Date: Oct 2004 Location: BC	It seems that the problem lies in mating a metal slide with a Guarder feeding nozzle. The runners on the nozzle are too big. I'm going to sand them down a bit and see if that helps. __________________ ...and she's terribly partial to the periwinkle blue.

September 30th, 2005, 13:27	#4
Mantelope Scotty aka harleyb Trader rating Join Date: Mar 2004 Location: Toronto, Ontario	That's almost definitely the problem. I had to do that when I put a metal slide on my SVI 5" with the same Guarder nozzle. Just file a tiny bit, and move it around a bit in the slide to see if it's good... repeat and so on. __________________

September 30th, 2005, 14:33	#5
nic_s Trader rating Join Date: Oct 2004 Location: BC	Excellent, that's good news. If it works we can move this thread to the solutions board! __________________ ...and she's terribly partial to the periwinkle blue.

October 25th, 2005, 06:11	#6
nic_s Trader rating Join Date: Oct 2004 Location: BC	Update: I've sanded down the nozzle, and it cycles great now, but it just blew out another mag seal. WTF? Nic needs YOUR help, desperately! __________________ ...and she's terribly partial to the periwinkle blue.

October 25th, 2005, 13:44	#7
Mantelope Scotty aka harleyb Trader rating Join Date: Mar 2004 Location: Toronto, Ontario	What do you mean by blew out? FYI, WA mag rubbers only last about a thousand rounds on propane. __________________

October 26th, 2005, 03:44	#8
nic_s Trader rating Join Date: Oct 2004 Location: BC	A chunk of it was actually torn out, and the thing was literally brand new. __________________ ...and she's terribly partial to the periwinkle blue.

October 26th, 2005, 12:39	#9
Stealth Mr. Silencer Trader rating Join Date: Dec 2001 Location: Toronto	I've had the same thing happen to me, but I ran out of rubbers to test the mod, so I don't know whether its the problem. On the bottom of the nozzle is the bb loading arm, right? If you look at the underside of the arm, you'll see that the bottom starts out flat, and then there is an abrupt change in direction and it starts sloping downwards towards the gas chamber. Take some sandpaper and sand down that abrupt angle change, and see whether it helps.

October 26th, 2005, 16:04	#10
nic_s Trader rating Join Date: Oct 2004 Location: BC	I'll try that. Another possibility that I thought of is the mag release. Could it be that the CP mag release holds the mag too high? __________________ ...and she's terribly partial to the periwinkle blue.

October 26th, 2005, 19:00	#11
Stealth Mr. Silencer Trader rating Join Date: Dec 2001 Location: Toronto	It happens on my stock mag release as well, so that isn't the problem. I guess one could argue that the aftermarket slide makes the entire blowback chamber sit too low. Just wondering, is the tip of your feeding nozzle dented?

October 27th, 2005, 16:50	#12
nic_s Trader rating Join Date: Oct 2004 Location: BC	Yes it is. I don't think the slide has anything to do with it though, since the gun functioned great with the stock loading nozzle. __________________ ...and she's terribly partial to the periwinkle blue.

November 12th, 2005, 17:18	#13
nic_s Trader rating Join Date: Oct 2004 Location: BC	Bump, any more help greatly appreciated. __________________ ...and she's terribly partial to the periwinkle blue.

WA/Guarder Feeding Nozzle Probs

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