If you have US-spec guns (not 'detuned' for different export markets), then yes, I am sure)- the only valve modification that gains you anything is on the pump guns (13xx) is a flat top piston/valve combination, anything else related to the valve is a waste of time if not using a 24" barrel. Free shipping. I could see too much of the bolt tip through the barrel port. Crosman 22 Cal 10 375 Rifled Barrel For 1322 Or Convert 1377 To 22 Cal 10 25 . Crosman 1377 all you need for this model is listed here the Parts Diagram==Spare Parts== Custom Parts==Wood Grips & Forestock PLUS THE NEW P1377. ... 1377, 1322, PC77, 1300KT & 2289G BACKPACKER $ 12. Or get the good stuff pelgun oil.A stock 1377 will do 600fps with 7gr pellets @ 10 pumps my 1322 does 530fps @ 10 pumps with 14 gr pellets.Realy sounds like the outer seal on the valve is worn and needs to be replaced,I would order a new valve it's been awhile since I've ordered one but last time I did they were like $7 while your at it get a new pump cup and it … We specialize in 13XX, 22XX and specific PCP models. Rear Valve Spring I came up with this mod back in August of 2004. Does the valve mod under bio's tunes in the tech section apply to a 1377 valve as well? UPGRADE PISTOL GRIPS for Crosman 13XX & 22XX $ 11. P1377, Flat Top Kit psychobilly451. The tapered passage directs the increased CO2 capacity directly to the Boss valve. All Crosman 1377 1998-Present ; All Crosman NEW 1322 . Uses standard 12 gram C02 cartridges like Crosman Powerlets. Floating Barrel Mod for 1377, 1322, 2289. Steel replacement breach/bolt assembly upgrade to fit Crosman 2240, 2250B, 2250XL, 2260. 368-900TF Cv = .73 Cv = .73. It is recommended that higher performance valves be used with our +25% transfer ports or Boss Buddy transfer ports. High Performance Valve for Crosman 1760,2240,2260,2300, 2400 Modify your Crosman air rifle or pistol. Fully Customizable TONS OF OPTIONS. 338-900TF and Mod. Guides fit all models. If you have a 1377/1322 that came with a plastic breech (and no rear cocking knob) then the trio will work, though you can still buy just the valve if you want. The valves are generally safe up to 20 pumps. a drywall anchor used to make adjustable trigger mod! RB Grips is a good place for your grips. New 12g CO2 Pump to PCP … All of these modifications will boost velocity, at a price. open longer and opening faster. The Canadian Airgun Forums are a place for people to discuss and learn about airguns and the airgunning sport in Canada. Durable Viton Duro. There's TONS of em. Here is a list of mods: CB Ultimate breech and bolt w/ a 1/4" removed at the rear of the bolt to lengthen the loading port. « on: April 13, 2010, 12:44:37 PM » Can the valve flat top mod be done independently of the pump piston mod, or do the two have to be done together? The parts kits on these pages fit the current Crosman 1377 air pistols and other models that share common parts. Enjoy Bigden There are lots of discussions about airguns, airgun accessories, reviews, modification and repair information, airgun events, field target and ... Making a new 1377 valve front half. Details. Nice and heavily modified: These parts kits also fit current Crosman 1322 air pistols, the Crosman PC77 Pumpmaster Classic and the Crosman Backpacker Bugout Kit. These parts kits also fit current Crosman 1322 air pistols, the Crosman PC77 Pumpmaster Classic and the Crosman Backpacker Bugout Kit. Crosman Pc77 1377 1322 2289 Complete Valve Pump Cup Port Seal Reseal Kit. by 100 fps. MAGNUM 13XX FLAT-FACE VALVE & PISTON SET $ 116. Crosman 1322 1377 2240 2250 2260 Super Flow 60 Valve Bushing Two Viton Seals . Details. $4.95 × Bundle & Save $6.00! $5 International Shipping. Compare. Check out these great deals and selection on Crosman Accessories from the leading experts in airguns. If you have a P1377/P1322, then the trio will work or you can buy just the valve. It’s getting 530 fps with Premiers, but he hopes to increase this with a flat top piston. Crosman 1077 Plug Valve - 1077-036 . Personally, I would recommend that you purchase a 1377 and a 2250. $34.99 Crosman Mod.1377 Brass Bolt & Seal $12.00 CAD Crosman Mod.1377 Breech Top w Bolt. This video is about the 1377 and 1322 teardown to replace seals and the piston cup. Add to cart. $99.00. 14" crosman barrel cut and crowned to 11" by myself. Category: Modification Parts. The idea is that by giving the gun a larger air reservoir, you can do more work per pump, resulting … 22XX includes 2240, 2250, 2260, 2300T, 2300S, 2300KT, 2400KT and related models like the 1740, 1760 and Sheridan 2260MB. P1377 Diagram & Spare Parts . This valve mod gave me more power than anyother mod I did before. It also was the biggest gas hog and pain in the rear to get right. The pump piston looks like a whole new custom … The valves are generally safe up to 20 pumps. Boss Valve for Crosman 2240 , 2260, 2300 Series air Rifles or Pistols Great Modification. The parts kits on these pages fit the current Crosman 1377 air pistols and other models that share common parts. Lot cleaner looking and is utilizing a 12oz CO2 ( shown in photos ) i bought a brand 1377. canadian orders over $100 qualify for free shipping. The new modifications done on my Crosman 1377 model, 2289G crosman 1377 piston and valve mods 1389 caught. Sold in sets of three. 1pcs 3/8 Intermount Adapters for Airguns 1322 1377 2240 2289 11mm Dovetail Rails. Complete Stainless Steel Screw Bolt Set For Crosman 2240 2300 1322 1377 Extras. 00. by 100 fps. This valve mod gave me more power than anyother mod I did before. $19.99. 2,088 sold. For the distance I shoot this pistol, it made no sense to me to mod the valve. Add to Wish List Add to Compare. Watch; Crosman High Performance Valve for Crosman 1322 1377 2289 . 13XX includes Crosman 1377, 1322, 1300KT and related models like the 2289G Backpacker. 378-900TF Mod. You may have to pump a little more but … 00. CA$21.99. OUT OF STOCK. Today I shot my reduced volume 1377 side by side with another 1377 with a factory valve. These products are designed for industrial applications … C $9.37. GENUINE USA Crosman 1399 CARBINE SHOULDER STOCK 1377 1322 2240 etc. 1377-SBPK Crosman long steel breech 61/4" (16cm) long complete with steel probe/bolt grub screw, end cap,rear screw £ 45.00 * Currently unavailable (1) 1399A001 Standard Stock . Brand new £26.00 OUT OF STOCK. It is 7.5" 22 cal. It isnt a real original mod, as this type of setup is found on lawnmower and automotive valves. Both pistols have 11 1/2" barrels cut from a 1760 barrel. You need to register before you can post: click the register link to proceed. Chris Dowling put together this 1377 rifle that has been converted to .22 caliber. Order code M203 . If you are low in your budget, stick with the 1377 as the ammo is cheaper, and you dont have to worry about CO2. Add to Cart. The reduced vol one has an adjustable pump the stock one doesn't. CUSTOM VALVE & PISTON for Crosman 1377, 1322, 1300KT, 2289G - EXTREME POWER !! (Read 4635 times) toddk63. hammer strike on the valve resulting in more FPS by keeping the valve. Free shipping. Aluminum Flat Top Valve & Piston Kit For Crosman 1322 1377 2289 P1322 P1377: The Flat Top upgrades are immensely popular with Crosman pumper enthusiasts. $20.00. Or get the good stuff pelgun oil.A stock 1377 will do 600fps with 7gr pellets @ 10 pumps my 1322 does 530fps @ 10 pumps with 14 gr pellets.Realy sounds like the outer seal on the valve is worn and needs to be replaced,I would order a new valve it's been awhile since I've ordered one but last time I did they were like $7 while your at it get a new pump cup and it should be as good as new. It's … The dark pistol is a 1740 with RJM short breech and bolt, my homemade bolt handle and hammer spring adjuster, with self modified valve, 2-stage trigger from Steve, 10" 1377 barrel, bicycle innertube grip sleeve and BSA 2X handgun scope with Cabela rings. shipping: + C $5.04 shipping . Remove the main … The "flat top" piston is really only a pumping efficiency modification and has nothing to do with valve potential energy... only less pumps. 1377 Flat Top Piston is easy to install and can increase performance. Maverick Custom Airguns 1377, 1322, 2289 Backpacker, Crosman custom shop 1300KT Support Link Upgrade. Valves Mod. $24.94. $6.00$4.95. Crosman Seal 130-032 . So I turned it down even more. Buy JL Missouri Parts Crosman 1377 C Pistol Valve Assembly Complete BB Pellet Gun Air Rifle Part 1322A013 1322C013 OEM By: Hunting - Amazon.com FREE DELIVERY possible on eligible purchases The larger valve volume is an easy way to get some more power because you don't need to modify the pump for more pressure. The air valve was reduced by remachining the two halves so they fit closer together and the interior … She started life as a 1377, but as you can see I have a lot of free time on my hand's. $24.95. SHORT VALVE CAP for BULK-FILL & PCP … They're not designed to be used The valve is stock. CUSTOM TRIGGER GROUP for Benjamin Discovery, Maximus, Fortitude & Crosman 2260 $ 65. Cleaned and in excellent condition. you know the down fall to the 1377's is the alum valves in the cnd version the brass cnd valves where better to bad crosman has turnned cheap thank god we still got brass in the 2240's. $14.50. We specialize in 13XX, 22XX and specific PCP models. C $58.95 + shipping. … Under 1 lb and it fired without touching the … Customer Support YOU WON'T BE ALONE. Rear Valve Spring I came up with this mod back in August of 2004. I have mine out and apart..And before I went and did anything Supplied with full instructions. For Crosman 1377, 1322. 378-905TF The company reserves the right to vary models and dimensions without notice. 1377 Diagram & Spare Parts 1998-Present . Crosman 1377 1322 13xx Upgrade Parts; Crosman 2240 22xx Upgrade Parts; All Upgrade Parts; Grips and Trigger Frames; Moderator for Crosman Airguns; Sights and Optics; Airgun Tools; Original Crosman Replacement Parts. Right Grip Only, Brown over to page 2 much as you do as much as you do 1/2 barrels. Mod, as this type of setup is found on lawnmower and automotive valves 2260, 1760, 2300 2400. R ) preferred valve material by custom builders due to it on Crosman. You have a P1377/P1322, then the trio will work or you can buy the. Specific use purposes, but not a great TRIGGER: > ) money back ; Ships a. And automotive valves … custom valve & piston for specific use purposes, but he hopes to increase this a... For specific use purposes, but he hopes to increase this with a factory.. 1322 from my private collection custom … this really nice solid brass valve is from a barrel... Fit the current Crosman 1322 1377 Extras another 1377 with a flat pistons... 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Floater ; Complete longer barrel, shoulder stock 1377 1322 2240 2250 Super! Set for Crosman 2240 2300 1322 1377 2240 2250 1740 1377 1322 2289 valve... Rb Grips is a good place for your Grips been converted to.22 caliber / Pump to PCP conversion for...