Hi
blatant X post from the MM board but I think i could be of use to people into builing engines ( on a budget ! ). Much more subtle than using a BFH, and this way you can remove and press in guides in a controlled fashion. Using a small piece of pipe (cut to required lenght using a pipe cutter) you can drop around the guide you can set depth easily.
an old exhaust valve with stacked with a large nut and a old whleenut makes for a good guide insertion tool
basicly two U uprights with thick walled box section top and bottom. a seperate piece of box section with very sturdy U profile was "welded" on. without it the boxsection was denting and flexing, the movable piece of boxsection keeps the jack centered
It's a good thing that i don't weld nuclear stuff
but it is sturdy and a 5 ton jack is so far enough to remove even very stubborn guides. you can feel the tension .. most of the time you can carefully press along. the guide will be released with a loudisch pinging sound, after that you can just use the entire stoke of the lever.
a 2 ton is just too small for removal and bronze guides wich tend to be a bit sticky.
allways ream the guide (cast iron as well IMHO)
