This is an update from my last post back in Feb 2010.
I now have 8 re-sleeved Cat 310 pumps all running strong at 1250 psi for almost 2 years now. All work was done by Vilco in TN. The heads were each 22 years old at the time of the re-sleeving. I had 4 done at a time. Each set (4 310 heads) cost me just over $1000 for everything including shipping ($250 a head). All 3 high pressure seats bored, all 6 valve seats bored, all new high pressure seals, all new low pressure seals, all new o-rings, all new wicks and plastic backup inserts, all new plastic tops on the 6 valves. The only thing that was re-used was the head itself, the brass plugs,and the bottom 3 pieces of the valve which are all stainless steel.
If I had to buy a new pump today, I would obviously go with the Cat 310 with the SS head.
To me, $250 a head made more sense than trying to switch or buy new.
Eventually, some of the pumps may fail internally themselves; thats when I will switch to the Cat 310 SS.
I now have 8 re-sleeved Cat 310 pumps all running strong at 1250 psi for almost 2 years now. All work was done by Vilco in TN. The heads were each 22 years old at the time of the re-sleeving. I had 4 done at a time. Each set (4 310 heads) cost me just over $1000 for everything including shipping ($250 a head). All 3 high pressure seats bored, all 6 valve seats bored, all new high pressure seals, all new low pressure seals, all new o-rings, all new wicks and plastic backup inserts, all new plastic tops on the 6 valves. The only thing that was re-used was the head itself, the brass plugs,and the bottom 3 pieces of the valve which are all stainless steel.
If I had to buy a new pump today, I would obviously go with the Cat 310 with the SS head.
To me, $250 a head made more sense than trying to switch or buy new.
Eventually, some of the pumps may fail internally themselves; thats when I will switch to the Cat 310 SS.