widget,
I too bought my first XGK (one with the yellow pump almost identical to the one I have now) from Penberthy. He was a great man as well as a great stove designer. I think the main purpose of the cup was to protect the pack, not as a pot.
There is a lot of interchangability even with an old one like mine (I said Penberthy was a genius didn't I). Most of the o-rings replace (even though the bottle gasket on the pump was just that - a gasket). I don't know if the newer rubber pump cup will replace the old leather one, but I will try it if I can't find the leather. The jets from the older XGK interchange (not the EX though), but they don't allow the surge damper to stay. The newest jets also use the same jet for gas and kerosene (GK) where the older ones used to separate ones. I don't know if the GK will work, although I expect it will.
The things I would most like to find are a replacement leather or two for the pump, an air tube, as well as a spare check valve. For the stove I would like a spare surge damper, spare G type jets, and additional priming pads.
Thanks for the reminders.
Respectfully,
Jerry
Jerry,
The newest MSR XGK EX still uses separate jets to my knowledge, one for kerosene class fuels and one for gasoline class fuels. I don't believe they've gone to a single jet. I believe the Optimus Nova did go to a single jet.
Modern priming pads for the XGK EX should I believe work in an old GK or XGK stove. I haven't tried it, but a priming pad is a priming pad, even if the materials they used back then were different.
The jets are very different. I've never tried to see if the thread is the same, but the size sure is different. On the oldest of the XGK line, I believe the diameter of the jets was much larger (if my memory serves me well). I don't think they're interchangeable although I could be wrong on that point.
As for finding a spare check valve, good luck. Short of buying another pump and cannibalizing it, I don't think you'll find such a thing.
HJ
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