Quote:
Originally Posted by Amos
From my understanding, if too much grease gets into the port holes it'll effect it in a very negitive way.
From my understanding, those port holes are there to expand the Oring while the piston is moving forward, and contract it when it goes back... If the holes are plugged, it wont expand, you wont get as good compression, if it cant retract, the friction will destroy the Oring and the gun wont run as smoothly.
I use 2 drops of silicon oil in my cylinder, and that's worked perfect for me for the past couple years.
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Ya, I know how ported piston heads work, I guess you should have initially stated "Never use too much grease". I found that with Apoc's M249, he put in so much grease to artificially seal the leaking and it worked, boosted his fps........... after running about 10 cloth patches through his hop up and barrel to remove most of the grease that got blown int there.
I might try the oil thing though. Last night I wiped the grease (that teflon stuff for AEGs) off the Systema Silent piston head on the gun I'm working on, ran a cloth through the cylinder to get it off there, assembled and chronied it. I don't know what it is, but every ported piston head I've edealt with in the past couple months either gives very low fps, or wildly ranging fps. The SG1 last night, with 110 spring in it, mostly sat around 258-270fps range, and a couple times hit 381fps. Really frustrating. One gun I had success with a TM O-ring on a ported piston head. Another I got fed up and just put the stock TM pistonhead on and left it like that since it gave me the best and most consistant fps readings.