valve and piston mod

[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]

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

[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

[Cwlongshot]

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

[Gippeto]

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