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svandamme svandamme is offline
Gon fix it with me hammer
svandamme's Avatar
Join Date: Sep 2003
Location: In Flanders Fields where the poppies blow
Posts: 18,582
little bump ...

found out why i had such problems measuring with the vernier caliper :

last weekend , i sat down , and went for it : turns out that when
my heads where machined , and received new valve guides
at the edge of the guide ,where the guide exits the head

there was some sort of resin or maybe solder residu

although very little of it... it did have an impact

the valve seat went around it , but the metal plates used to correct the preload weren't... so they wiggled

last time i didn't notice , because i measured with the springs on

now i measured without the spring ( used the valve stem to compare against valve seat +47.5 mm metal tube ) and it became very clear that there was a problem with that resin like stuff

BTW , i did get that tool from Goodson , the MVC-150 , but unfortunately that turned out to be useless for the 911 heads... because it didn't fit in the hole was to wide in diameter
Stijn Vandamme
Old 02-28-2005, 06:12 AM
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