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valve and piston mod

Started by Bud, February 25, 2015, 05:39:41 PM

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Bud

If I flat top my valve what do I have to do to make the piston compatable with the valve? I tried to find any info on the net, especially youtube but could only find articles on modifying the valve.

mudduck48

We need to keep going and have fun doing it.

DBOdude

i like AC Customs because both of his use delrin so there's no metal to metal contact when pumping to possibly damage the inside of the pump tube .

http://www.ebay.com/sch/a.c.customparts/m.html?_nkw=&_armrs=1&_from=&_ipg=&_trksid=p3686
Everything isn't for Everybody ......

Cwlongshot

Quote from: mudduck48 on February 25, 2015, 06:54:26 PM
PM Davio, here on the forum or on the GTA forum. Here is one of the set ups he sells.
http://www.ebay.com/itm/POWER-COMBO-FLAT-TOP-HP-VALVE-ADJ-PISTON-DONE-RIGHT-for-Crosman-1322-1377-2289-/291332305886?pt=LH_DefaultDomain_0&hash=item43d4c233de

I have used these on two of my builds and I have a third on the bench for my 1389. Its good stuff!

CW
BENJAMIN's: 392PA '11 • Marauder .25 • MAC1 tuned Disco .22 • 397P Nickle '81

CROSMAN's:  1389 Back Packer .20 '86 • Hawthorne M140 4th variant • 357 W/8'' '90 • 760 '75 • 1377 '13 CARBINE LOTS ''O'' Mods • 2200 Magnum '81 (First Gen) • 2100 '13 • 2240 '13 

DAISY's:  25 '10 • Red Ryder • 22X • 922

DIANA's:  34 .22 '05 (RWS)

SHERIDAN's:  Blue Streak '82  Steroid • Blue Streak '65 Steroid • Blue Streak '70 • Blue Streak '72 • C9 Blue Streak

WEBLY's:  Longbow .177 • Hurricane  .177

XISICO's:  XS60c .22 PCP

Gippeto

Quote from: Bud on February 25, 2015, 05:39:41 PM
If I flat top my valve what do I have to do to make the piston compatable with the valve? I tried to find any info on the net, especially youtube but could only find articles on modifying the valve.

You replace the plastic piston assembly with a higher quality one. Best ones are made from brass IMHO.

Of the current commercial offerings that I'm aware of, I like this one the best;



http://www.airgunsmith.com/cros1377/cros1322-77.htm

Al