Posted by trucker40 on April 30, 2008 at 17:43:15 from (69.150.232.217):
In Reply to: 640 VALVE GUIDES posted by BLINDHAWG on April 30, 2008 at 16:35:36:
ok Im not an expert on gas Ford motors,but I have replaced valve guides on diesel motors and I saw where nobody has answered yet so I will try.Looks to me like somebody put a different type of valve guide in there.An insert inside of the real valve guide.Also I saw where you posted before and the ones in your picture looked to be the wrong ones.Now I remember that a bunch of Ford motors had replaceable valve guides.As you described in your first post they had a ring to stop them.I think you need those kind.If you have those kind of guides,you take a air hammer,and you could have to make a tool or buy a tool for the air hammer and drive them out from the bottom,make sure the head is clean and drive in new ones.Thats what replaceable valve guides mean to me,I could be wrong.I also remember that there is a way to put brass valve guides in(which is what I think that insert is inside of your valve guide that you are talking about.These I think are screwed in and maybe are replaceable too.Another thing that was done was called knurlizing which was kind of like running a tap through the guides and cutting a sort of thread which raised the inside diameter and tightened the valve stem up in the hole.This was the cheap way out and worked for a while.Most people that have something like that break down and want it fixed yesterday.So there is no telling what was done to it.The right way is what you asked about before,I think you need ones like came out.I think it would last a long time if you did it that way.
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