Join Date: Feb 2005
Location: Atlanta, GA
My Ride: CSX/CS/GLHS
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Re: Hemi Valve Stem Seals on a 2.2/2.5 Head
I think that eventually this thread is going to yield some good information and already I think we've all learned something new, it's good. I did want to bring out the point that the OD of the valve guide and the OD of the valve stem are both known and consistent across all our heads UNLESS you are using over-sized guides or custom valves. So, with that being said we are talking about stock sizes here.
The company SBI is an automotive standard supplier of many engine parts. Almost any machine shop will have one of their catalogs. The beauty of the catalog is that it has every part that they make or distribute cross referenced in a variety of tables that make it easy to (for example) look up any style valve stem seal that has a valve stem hole size of .xxxx" So, you just run your finger down that column till you come to the seals in that size, or within 1-2 thousandths of an inch smaller to that size. Then you look across a column or two to find the seal on those lines that has the correct ID size to fit the OD of the valve guide. So now you have a seal that fits your application, and then you look to see if it is a positive metal clad, a high-hat style, a rubber/silicon/vitton (all rubber), style etc. Lastly, with the part number in the last column, you can look that number up and see what applications they fit. So in the end you know that the seal will fit our applications and what car/truck/tractor engines they came on and what years.
We went down the entire Chrysler selection of valve stem seal applications and every engine in the book, none, not one of the 'hemi' engine seals was a fit. I am going back by the shop again today to gather up a little more info, just wanted to share how and where this information is coming from...and where it is going to which is a list of valve stem seals that are known to fit properly, and work w/o having to do any modifications to the head.