See our huge selection of gun parts for sale today. Trying to order both from the same vendor. Find many great new & used options and get the best deals for Flat Man's Pack Crosman 1322 1377 P1322 P1377 2289 Flat Top Valve Piston Spring at the best online prices at … 4)- Casser l'angle de port d'échappement. I converted almost all of my 13xx and 2289 to flat top. Archived. td_boy Donator. I got everything put together today. in this video we give you the news on why your US full power valve is not as fast as it use to be, very interesting i must say Non-adjustable piston. C $119.21. Crosman 1377 1322 SuperPack Pump RP Valve, Power Hammer Spring & Boss +25% Port . Free P&P . I just bought a 1377 with a flat top piston tuned to shoot .22 cal at 500fps. I didn't do it for performance reasons but more for ease of repair in the future. Crosman New Pump Rod And Cup Seal Fit 1322 1377. Does this valve diesel if oil gets into it? DOES NOT REQUIRE the flat top adjustable piston . Copyright © 1995-2020 eBay Inc. All Rights Reserved. accuracy is good at 10mts, velocity can be jacked up by pumping certain number of pumps into the valve. Posted: Fri Feb 12, 2010 6:51 am . ... New Oem Crosman 1377 1322 Rebuild Kit W Complete Oem Valve Plus Piston Cup. The piston is adjustable and includes an oiler. He grew and went on to centerfire rifles and shotguns so the 1377 went into disuse and storage. Crosman, brass flat-top valve body 1377, 1322, 2289, PC77. If I understand this correctly, Only difference is between CDN and American version is that the Canadian version has modified valve to lessen the air volume. FLAT-TOP VALVE & PISTON for Crosman 1377, 1322, 1300KT, 2289G - EXTREME POWER !! Find many great new & used options and get the best deals for Flat Man's Pack Crosman 1322 1377 P1322 P1377 2289 Flat Top Valve Piston Spring at the … With the flat-top piston, the distance had to be close as there is nothing to compress once you are metal-to-metal on the piston flat face to the matching surface of the valve. I ordered the shoulder stock from Airguns of Arizona, a flat top valve and piston from Charlie Mellon, a solid pin from Charlie and a stainless steel long probe bolt from Charlie. I have read that getting a flat-top valve/piston combination would work, however others have claim it doesnt increase the velocity. New Crosman 1377 are under power - here's how to fix them. Crosman 22xx series $65 ... 13xx custom Flat Top valves, $25. Just looking for some feedback, who makes the best flat top valve and piston for the 13xx? This translates into fewer pumps for the same FPS or more FPS for the same number of pumps. Customer ratings for 002-0750 NEW BLUE 1377 Flat Top Piston Kit. For additional information, see the Global Shipping Program. #224 Riverside California 92504. {"modules":["unloadOptimization","bandwidthDetection"],"unloadOptimization":{"browsers":{"Firefox":true,"Chrome":true}},"bandwidthDetection":{"url":"https://ir.ebaystatic.com/cr/v/c1/thirtysevens.jpg","maxViews":4,"imgSize":37,"expiry":300000,"timeout":250}}, West Hatfield, Massachusetts, United States. The "flat top" piston is really only a pumping efficiency modification and has nothing to do with valve potential energy... only less pumps. For example if a stock 1377 takes 10 pumps to get 550 FPS you may be able to get the same 550 FPS on 7 pumps (or less) with the flattop setup. 1377 Flat Top Piston is easy to install and can increase performance. I have a good source of orings so converting them to flat top means if I ever have to replace the pump seal all I need is an oring, which I have a lifetime supply for just a few dollars. Holds a little more air than the modern aluminum valves do. This amount is subject to change until you make payment. Popularity - 73,517 views, 32.1 views per day, 2,289 days on eBay. Now you can order them straight from the crosman custom shop with out the flat tops I built one up with a 24" barrel steel breach put a crosman stock on it flat top pistons and valve polished up the trigger bits tuned it tuned it tuned it most accurate gun I have ever owned. Ratings. Seller assumes all responsibility for this listing. Hi Guys, I've just bought a brand new Crosman 1377 and noticed it's restricted to 495 FPS like the Canadian version. More × Fits Crosman 1377, 1322 and the Custom Shop 1300KT airguns No sights 1/2″ x 20 threads Lock the Barrel securely in place with the included locking set screw. Top … I bought a 1377 at wally werld a while back and ordered a bunch of parts to customize it. Crosman P1377 American Classic Variable Pump Single Shot Air Pistol 177 Cal. « previous next » Print; Pages: [1] Go Down Share This! It supplied me with Ringneck Doves for the dinner table as well as dispatching vermin like rats. I was wondering if it would be possible to adjust the piston so that it shoots 600 or 700fps with the same number of pumps (10) without retaining air, blowing seals, etc. Facing the end of the valve intake end. Fully adjustable with the highest quality viton duro. Eradicator; Sharp Shooter; Posts: 584; Knoxville, TN; Who makes the best valve and flat top piston … Flatman. I guess it's shopping for another flat top piston. Mountain Air bolt and probe, Blue fork Barrel band, TKO shroud, Crosman 24″ barrel, Muzzle mac stainless steel screw kit, Muzzle mac wire stock, RB laminate grips, Air gun Smith trigger, Mountain Air trigger guide and spring, Barska scope, and BKL mounts. All of whom are probably hanging out with worms six feet under. From United States +C $13.25 shipping. 17130 Van Buren Blvd. J'ai procéder a une transformation de la puissance du Crosman 1377 C (4,5mm) comme suite: 1)- j'ai enlever 2 filets de filetage. Modding my Crosman 1377. Buy It Now. 7 pumps will do the same as 10 pumps with the standard … Flatman. Maverick Custom Airguns. I've seen people say they can get pellet to fly 600-700 fps. Plug & Play with Your standard Piston. Please Go To The NEW GTA Forums: CLICK HERE. Crosman 1377 for sale on eBay. What is this designed to do?. $30.88. 568 sold, 5 available. 002-0750 NEW BLUE 1377 Flat Top Piston Kit will fit the 1322 1377 2289 . ... One day, I was planning on maybe going to a longer barrel and a flat top valve/piston conversion. This mod was second on the list after flat top/piston valve. Share on Facebook - opens in a new window or tab, Share on Twitter - opens in a new window or tab, Share on Pinterest - opens in a new window or tab, This amount includes applicable customs duties, taxes, brokerage and other fees. RE: Flat top valve and piston question for 1377 ?? by 100 fps. Sent my stock 1377 valve to charles mellon and he modded it into a flat valve, I bought the Flat piston from the yellow classifieds (with a strange pin at the flat end, see pics) . Brand New. Close. Hello Guys. Crosman 2240 1377 1322 1399 Compatible Red Dot Mount Rail. Brass end cap set for 22xx guns. Logged Argentine, Michigan; Hamerli AP20 Sumatra 2500 500cc .25 cal Hatsan M-125 TH .25 cal Benjamin Discovery .22 cal Crosman 140 2nd. Change to a flat top valve, increase valve volume, port valve, change to flat top piston with a brass piston cup, change valve pin to a delrin one, change valve spring, change hammer spring, change plastic breech to a steel one or better yet, a RJ breech and port it also, change stock barrel to at least a 16 inch barrel and port breech end. So, the entire kit is the: Power Hammer Spring (part of the Pumper's Pack); Max Flow Exhaust Bushing (the other half of the Pumper's Pack) It fits virtually every flat top piston Crosman ever made. At 10 pumps the flattop will give more FPS than the stock pump cup. At 20 pumps, our customers report well over 100 additional fps in both .177 and .22 calibers.The flat top valve and the flat top non-adjustable piston makes each pumping stroke a little more efficient than the non-flat top setup. 3 product ratings - Crosman 1377 1322 SuperPack Pump RP Valve, Power Hammer Spring & Boss +25% Port . The altidude (had to misspell to pass posting rules)is high here so I wonder if the velocity is low. i have done extensive mods to it thus far, lots of custom parts fitted into and onto it. 13xx series guns Flat top pistons $25. Save crosman 1377 valve to get e-mail alerts and updates on your eBay Feed. $19.00. 3 pc set with cart end, rear tube and breech $45 per set. I recently bought crosman 1377 Canadian version (495fps max) i was curious if I change into flat top piston/valve, will it make the gun strong as or more than stock American 1377? MAGNUM VALVE for Benjamin Discovery & 22XX PCP/HPA conversions EXTREME POWER !!! Alliance Hobby Flat Man's Pack All My Pumper Performance Mods for Crosman 1322 1377 2289 P1322 P1377: The Flat Man's Pack contains Pumper's Pack and the Flat Top Valve Kit. Chris Dowling put together this 1377 rifle that has been converted to .22 caliber. Fully adjustable with the highest quality viton duro. For example if a stock 1377 takes 10 pumps to get 550 FPS you may be able to get the same 550 FPS on 7 pumps (or less) with the flattop setup. You will receive; One flat topped piston with two Viton o-rings, allen wrenches and instructions. I sell flat top pistons and convert the valve along with seals and up rated pivot pins ped, Jan 28, 2019 #2. C $64.22. I have the mellon delrin piston. The idea is that by giving the gun a larger air reservoir, you can do more work per … Top Rated Seller. The guide and piston shaft are faithful copies from the Early Crosman adjustable piston from the 760 rifle.With the Modern guns Valve machined flat the same piston that is still in use in 40 year old guns can pump your 1322 or 1377. Author Topic: Who makes the best valve and flat top piston for a 1377? The weight of the piston makes pumping smoother and the gun is pumping 25-30% more air each stroke. 5.0 out of 5 stars. I intended the HDD for a carbine I am building (19" bbl)with the Crosman breech, and based on Steve's post thought it might help by itself. If you cant DAZZLE\'em with brilliance, BAFFLE\'em with B.S!! Crosman-Benjamin Air Gun Gate (Moderators: Gertrude, longhunter, avator) » Who makes the best valve and flat top piston for a 1377? price: $30.00 ea. Drilling out a piece of 5/8" free machining steel, after turning it down a few thou. This will probably be my last modification post on the 1322 until that valve and piston come in. Clear as mud, right? i own a crosman 1377c multi-stroke pnuematic pistol. Save crosman 1377 valve to get e-mail alerts and updates on your eBay Feed. Super high amount of views. HIGH PERFORMANCE ALCHEMY FLAT TOP PORTED HP VALVE for Crosman 1322 1377 2289 etc. Brand New. I just bought a 1377 with a flat top piston tuned to shoot .22 cal at 500fps. See the seller's listing for full details. u/Mike_ate_Sully. For additional information, see the Global Shipping Program, This amount includes applicable customs duties, taxes, brokerage and other fees. Used to big guns. I like the look of the AC Custom piston but the valve is out out of stock. FLAT TOP RP VALVE & BRASS FLAT TOP PISTON SET for Crosman 13XX PUMPERS $56.00 $56.00 Alchemy AirWerks Rally Ported Higher Performance Valve for 22xx Crosman CO2 Air Guns $49.00 $49.00 The High Performance PUMP RP VALVE $28.00 $28.00 Alchemy AirWerks Flat Top HP Valve … If you reside in an EU member state besides UK, import VAT on this purchase is not recoverable. $17.88. + Update your shipping location 7 S 0 P O N S O A R P A 7 E E D-1-1 U J-1 0 F J-1-1. Flat top valve and piston question for 1377 ?? PicClick Insights - High Performance PUMP RP VALVE for Crosman 1322 1377 BackPacker NO FLAT TOP Reqd PicClick Exclusive. Installed an adjustable folding stock to make a carbine. Separate pieces can be ordered if needed. Something went wrong. 7. This one is used and has some dings and scratches. UK ones always have had a blow by valve in 1322's originally had a square stem 1377's had a hole at the rear sometimes 180*s to the port later they just used the rear hole in the valve loads on line and on the crosman groups on how to fettle it you could just fit a ftp and valve … READ THIS: This Is The Old GTA Forums, Which Is Now An Archive. I understand that the 1377 and 2289's are made with the aluminum valves, but was inquiring as to whether or not their CO2 counterparts (2240, etc) use the aluminum valves now as well. Perhaps one less pump in ten? Brass is the preferred valve material by custom builders due to it's corrosion resistance and strength when used for flat-top setups. Re: Flat top valve and piston question for 1377 ?. Crosman Barrel Band Screw For P1322 P1377 2289 Etc Pumpers With Longer Barrels. Is used and has some dings and scratches 1377 pump Arm with new... 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[ 1 ] Go Down Share this have claim it doesnt increase the went... Piston head are machined from tool steel with radiused ends to Match the internal tube.... For 13xx owners series $ 65... 13xx custom flat crosman 1377 flat top piston and valve piston without that expense... Like the Canadian version piston with Crosman Cup for Crosman 1322 1377 BackPacker NO flat top.... Has been converted to.22 caliber the very rough turning on the pump the valve body,! 530 FPS with Premiers, but w/Cutter 's breech so ca n't use the HDD COMBO pump RP valve POWER., Mountain air flat top PORTED HP valve for Crosman 1322 1377 pump pistol and more PSI pressure! Valve pretty much plug and play without that additional expense or adjusting.. Picclick Insights - high Performance pump RP valve for Crosman 1322 1377 2289 etc proficient. With 7.9 grain pellet to fly 600-700 FPS, Mountain air flat top piston Kit will the... Power!!!!!!!!!!!!!!!!!!!! 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Per set FPS for the same FPS or more FPS for the dinner table as well as dispatching vermin rats!