Good morning all
Last night I took my MKII apart add a few improvements and rebuild, here are some pictures and findings
Before surgery
growing from 480cc to 580cc
so let's start with the hammer valve bumper
First finding: C3 bumper has change, but donno if is for good, light blue orings usually are 70 on hardness, any way I took it out and replace that with an acetal washer (acetal = delrin, delrin is a comercial name, acetal is the correct name)
Hammer, spring and guide are the same than the old impact
careful when removing the block, several rubber parts might get loose and lost if you are not careful
the lever pin looks reinforced
Now let's go for the valve and the valvetube, first difference due the new mag, you can not access direct to the holding screw of the valve housing. now you have to remove the gauge and 4 screws in order to get access to the secure lock screw on the valveH.
Gauge and protective black cap
view after gauge removal
After taking those 4 screws you have access to the locking screw
zoom out
taking the valve seat out
Some measures
ValveTube OD (better measure, old is 19.7mm or so)
ValveSeat
Acetal Rod ValveSeat seal
And the bad news... in order to have the bigger plenum (valveTube) in old impacts (non mk2) is not just getting the new valvetube, you also need a new valvehousing or some sort of adaptor. The threaded part of the ValveSeat is wider than the old one 2mm wider
old valveseat
MK2
ValveSeat (the rest is about the same)
Internals changes made: New VS 6.35 (thanks Ernest!) , hammer weight and C3 bumper changed (that VS might be also 6.5mm usually we have about 0.2mm difference with Ernest! jaja)
External Plenum
In order to add an external plenum, is needed to remove the lower "bridge" of one ValveHousing (or mill) without doing this you have an obstructed path and there is no point adding it. And since the ValveHousing is different than the old ones, I did not do it until I get the adaptor or the new VH. (as a spare part)
Here a pic where you see the VH "blocking" the gauge hole (but is good enough for the gauge). I do not think the external plenum is needed due the extra ValveTube size on the mk2, but further test needed on my side.
that it basically, I thought the new gauges where black on the side, I was wrong, is a protective/decorative cap (you can change that for silicone colour caps if you like)
External changes made: Bottle change from 480cc to 580cc
And a new rail for the bipod, pressure again, in 200b, left it overnight for leaks, check it this morning and 200b spot on, so all good
Hope it helps! test coming soon.
Next: Vortex 60X is coming
Quick FPS test reg @ 145b shooting monsters 25.4gn (cheaper for speed testing than slugs) 970 FPS, the mods I add will start looking good at reg over 150b.
And do not forget, if this post helps, a simple thanks is good enough for me
Last night I took my MKII apart add a few improvements and rebuild, here are some pictures and findings
Before surgery
growing from 480cc to 580cc
so let's start with the hammer valve bumper
First finding: C3 bumper has change, but donno if is for good, light blue orings usually are 70 on hardness, any way I took it out and replace that with an acetal washer (acetal = delrin, delrin is a comercial name, acetal is the correct name)
Hammer, spring and guide are the same than the old impact
careful when removing the block, several rubber parts might get loose and lost if you are not careful
the lever pin looks reinforced
Now let's go for the valve and the valvetube, first difference due the new mag, you can not access direct to the holding screw of the valve housing. now you have to remove the gauge and 4 screws in order to get access to the secure lock screw on the valveH.
Gauge and protective black cap
view after gauge removal
After taking those 4 screws you have access to the locking screw
zoom out
taking the valve seat out
Some measures
ValveTube OD (better measure, old is 19.7mm or so)
ValveSeat
Acetal Rod ValveSeat seal
And the bad news... in order to have the bigger plenum (valveTube) in old impacts (non mk2) is not just getting the new valvetube, you also need a new valvehousing or some sort of adaptor. The threaded part of the ValveSeat is wider than the old one 2mm wider
old valveseat
MK2
ValveSeat (the rest is about the same)
Internals changes made: New VS 6.35 (thanks Ernest!) , hammer weight and C3 bumper changed (that VS might be also 6.5mm usually we have about 0.2mm difference with Ernest! jaja)
External Plenum
In order to add an external plenum, is needed to remove the lower "bridge" of one ValveHousing (or mill) without doing this you have an obstructed path and there is no point adding it. And since the ValveHousing is different than the old ones, I did not do it until I get the adaptor or the new VH. (as a spare part)
Here a pic where you see the VH "blocking" the gauge hole (but is good enough for the gauge). I do not think the external plenum is needed due the extra ValveTube size on the mk2, but further test needed on my side.
that it basically, I thought the new gauges where black on the side, I was wrong, is a protective/decorative cap (you can change that for silicone colour caps if you like)
External changes made: Bottle change from 480cc to 580cc
And a new rail for the bipod, pressure again, in 200b, left it overnight for leaks, check it this morning and 200b spot on, so all good
Hope it helps! test coming soon.
Next: Vortex 60X is coming
Quick FPS test reg @ 145b shooting monsters 25.4gn (cheaper for speed testing than slugs) 970 FPS, the mods I add will start looking good at reg over 150b.
And do not forget, if this post helps, a simple thanks is good enough for me
