kilowatt
05-07-2007, 10:03 AM
wondering if anyone has ever had a problem with valve guides in dart iron eagle heads. just used a brand new set on a 421 sbc and the exhaust valve in cyl. #1 stuck open and the piston kissed it. valve clearance was .090 on the exhaust and plenty of spring to control stuff so i'm 99.9% sure it wasn't valve float. I'm gonna replace that guide put in a new valve and pull off all the exh. seals to make sure they get some oil and try it again. any input would be helpful. thanks kw