Re: Henry's 55 Constellation

Posted by PackardV8 On 2011/2/18 10:56:40

My heads were machined for insert guides. Cast iron guides left side and bronze (of a bronze type) in the rite side. IIRC the wall of the insert was a lot thicker than what appears in your pics. There were no ring or knurl looking marks in mine.
If i had it to do over agin i would most likely just knurl mine. But at the time i was leary of positive valve seals for this application and oil consumption on the Packard V8's is bad enuf as it is.

Knurled or insert guides notwithstanding, if the shop did a good job getting the seats to seal then i wouldn't argue with them.

Mite need to double check with your machine shop. Maybe SOME insert guides are knurled a short distance near the top.

Bottom line, if the seats seal good and the stem is a good fit then i wouldn't scoff a bit.

Would be nice to know for sure tho if they are knurled or insert for futuer reference.