Crosman 1377 Piston And Valve Mods




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mark long: how big did you drill hole? ´╗┐

MrEricdgreat: I like your video, I got one of the first gen 1377 and I hear air escaping out the barrel can you tell me how I can fix it does not hold any pressure ? and I also pulled the handle off and a very small spring fell out I have no idea where it goes can you help?

PopeMouse: Great video man! This really helped me out. :) i just have one question, what site or sites do you get your parts from?

miketheknife2: Yes sir your right just the barrel and bolt prob are different.

BeastieG13: thanx Mike !

Kel-chan: cant you just file and sand down the piston to get a flat top? what happens if you use the stock plunger with this flat top?

miketheknife2: @AndyAbez lol

Psycho12345123: @miketheknife2 yeah the farthest i shoot at the moment is only 10-15 yards

F13rce187: @miketheknife2 so if I bore the valve will it increase the fps or get a flat top piston

snalesnot: im installing ft piston n valve do i need to add 2 drop pelletgunoil down the hole of the valve? i just want make sure thats correct is it? thnx

kingfish4488: I have an old style 1377 are they any mods. worth installing on it? It needs to be rebuilt its not holding pressure,also who is a good parts seller. Thanks Rob

macabespeed: Could you maybe do the old JB weld flat top piston? Grind the stock valve flush and maybe fill the center of the piston with epoxy? obviosly youd have to machine and polish the jb, but what are your thoughts? did this type of mod (epoxy) to a beeman p17 and it REALLY worked well....

miketheknife2: I wouldn't do it that way the epoxy could break up and damage your gun.

miketheknife2: @0akie13 Thanks and your welcome I have fun making them.

Psycho12345123: @miketheknife2 can you make a vid on how to drill the hole out and make the fps higher?

thatbme35: hes not that rude for dealing with dumb freaks day end day out. yes hes short with folks but i got a great 18in. 22cal. barrel frome him for cheap.i ordered my flat top piston valve set from airgunsmith dotcom they sell a great set.

GHOSTTOYS: ok but do a flat head get more air in or does it pump with less then 10 time , i personaly have moded my 1377 (canadian) by pluging the hole in the back and drill the valve exit and drill the jonction between the pump and the barrel it have alrady give me more speed and strength , can it get faster and stronger with the pump mod ?

Nate9595959595959595: @miketheknife2 where did you buy all the mods? like the pump and the barrel?

miketheknife2: Thanks man i'm glad you liked it.

miketheknife2: Mellon air . com

Patrice Beaulieu: My air started leaking after putting oil in it. I managed to temporary fix it by unscrewing a little bit the screw right before the trigger. The one that hold the bottom. If its too thigh aire starts leaking when I pump . Do you have any idea how to fix this ??

miketheknife2: The cone will keep them from touching but the flat top set up will touch each other.

BlazyNonVevo: I live in bc where can i buy these modifications and how do I take it apart? Also can I use any scope for this gun? Can I use any pellet gun or air soft mount to attach the scope? Thanks

Patryck Oliveira: Very nice videos guy!Congratulations from Brazil!

miketheknife2: @jonnytheninja2R You need to use emery cloth and smooth all of the sharp edges inside the tube.

Eadwine17: i installed the flat top valve but when I pump the gun there seems be air leaking out.. can anyone help me?

Victor Gonzalez: can a stock piston and valvle be modded to convert them in flat top? and you mention that i need to make the hole of the valvle a little bigger what drill bitt i must use?

GLC jonsan308: Do you know how to get the piston and valve in without cutting them in the tube?

miketheknife2: Mellon air . com

Nismogtir1: this is a vry informative video=)

MagnoliaX12: What are your thoughts about converting the compressed air cylinder to use compressed air from a hose? Basically remove the pump lever and run the hose down the barrel under the pump arm. Is there enough meet on the end of the cylinder to thread and attach an adapter? I have a Sheridan .397 that I want to do it too but not sure if it would work.

hazza2014: hi can you make a video resealing the 1322 and 1377 crosmen pistol thanks hazza´╗┐

miketheknife2: @BlazyNonVevo It's very easy to take apart pretty much remove all the screws be careful of the rear cap it's under spring tension, and remove the pin that holds the pump arm in.

miketheknife2: @0akie13 Sure can just dont go to big.

PrinceMustDie666: b great comment, so relevant, please comment more

miketheknife2: @victorgonzalezd1 I just 2 sizes bigger

Xxoo0o0o0ooxX: Have you ever encountered a aluminum valve for the 1377? I have it still worked good I still bored it out. But I really did not like it that much seemed cheap you know? Well anyways I have only seen one like it maybe they were trying to cut cost's.

drazmainianjew: Were did u get ur mods from

0akie13: Hey could use a drill bit and try to enlarge that hole in my valve to increase airflow or would that ruin my gun? Any help is appreciated

BeastieG13: how do ya take the top cone off the valve?

Zangetsuis1: If i want to just drill out the air exit port on my stock valve rather than buy the flat top, would that still work?

Brutuz62: Well done Mike!

miketheknife2: Where is the air leaking from the barrel or the middle of the gun.It sounds like a o-ring is leaking did you deber the inside of the tube if not you could have cut the o-ring when insatlling the valve.

RippSnortin': great vid, you must be a teacher. thanks

Craig Arndt: Great video, I love my 1377, have had it a couple months. I like the power of the gun but may make this mod for better power for taking out pests.

miketheknife2: @miketheknife2 The FT piston holds more air because it's bored out plus the transfor port hole is also made larger so more air will move through the pair both sides flat will get every bit of air into the valve with very little space between them.Im no pro but im pretty sure this is how it works.

TwoSevenElevenEighty: Is it worth just getting a flat top valve for now and piston later? Can they be upgraded at different times?

heinno777: great vid, thanks! Where do you buy the parts for the mods?

miketheknife2: @TwoSevenElevenEighty I know of some that have done that but if you do both at the same time its one less time you have to remove the pump arm. but its cool to do you wont get the full power. Thanks for watching

miketheknife2: Yes a 760 valve will work but you will need to use a larger transfor port because the hole is bigger then the 1377s.
Rating:
Crosman 1377 piston and valve mods 4.9 out of 5

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Crosman 1377 piston and valve mods