To partially answer my own question, looks like: green = exhaust black = intake
...according to this forum post: http://forum.miata.net/vb/showthread.php?t=173289&highlight=valve+stem+seals+green Still looking for confirmation of whether '97 and '99 valve stem seals are interchangable, but I'm leaning towards "yes". --Jerry On 4/14/08, Jerry Malsam <[EMAIL PROTECTED]> wrote: > > I'm taking the '99 head to the machine shop today for a rebuild + comp. > valve job, along with the '97 1.8L block + Wiseco pistons (getting > bored) and valve guide seals from the '97 engine gasket kit -- MazdaComp, I > think? > > Couple questions: > 1. The valve guide seals are intended for a '97 engine. Will they fit my > '99 head? Or do I need to buy a seperate set of valve guides for a '99 > engine? > 2. The valve guide seals are color coded -- 8 of them are black, and 8 of > them are green -- implying that there's a difference between the intake and > exhaust seals. So which is intake and which is exhaust? > > Thanks, I just need to let my machinist know what's up. > > --Jerry > '97 street Miata awaiting a 300whp heart > '92 Spec Miata >
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