Might be easier to pull the Pre-Chamber, bang the valve-guide out into cylinder, and fish it out with a Magnet on a stick!
--All depends on whether the Valve will drop outta the guide with the Piston at BDC--If it wont, then this idea wont work....
Driving in the new guide after the old is out is easy, and getting valve back up isnt hard with long-nose through manifold tract in head after you have the manifolds off....
Problem may be that with the New Guide fitted, the Valve wont seal properly without re-lapping/facing it in, as it may not be in Exactly the Same position as the Old, Worn guide,--With the small side-force on the valve-stem imparted by the follower, the valve seat after a few hundred K miles wears slightly eccentric.....
__________________
http://i190.photobucket.com/albums/z...0TDnoplate.jpg
Alastair AKA H.C.II South Wales, U.K. based member
W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.
W114, 1975 280E Custard Yellow,
-Great above decks
needs chassis welding--Really will do it this year....
