today I received the tool and I was able to get 4 of the valves removed, seal replaced and then assembled these back
I’m doing the intake side on one head for now (since otehr side needs repositioning), so 2 cylinders, intake side are done
the tool is fairly good quality, for $28 it is probably almost golden,
on the “glass is half empty” side, the handle could be longer and then my hands would not tremble that much when I’m putting the stoppers back in place
@Tester suggested the “rope method”, and I tried it first, but somehow even with rope tightly compressed, the valves still traveled way too low. my hope was they would firmly stay in place and I would not need to compress spring too much, but no, it did not work this way
next, I tried the method suggested by the Nissan shop manual: simply get the piston to the top and work directly against the piston: it was literally the same drop in valves, maybe just a tad bit more, so I’m not even sure I want to go with a rope anymore: both methods do not hold valves as the compressed air would
I’m too afraid to go with a compressed air, as I have no stopper for the crankshaft, so it may go wrong