Valve stem heights?
Posted: October 24th, 2016, 3:49 pm
Ok i have a bit of a problem. A customer brought me a Tj with a valve rattle, a valve job had been done sometime back and it has had the rattle ever since. He had someone else replace the cam and lifters with melling and sealed power or so I was told. So taking his word, I pulled the valve cover and checked the rocker arms and push rods. 7 pushrods were extremely loose, so I check preload on I'll of them. The ones that were loose had anywhere from .005-.015 preload so I pull the rockers off and check valve stem height and they're all over the place. From the tallest two there was anywhere from .010-.080 difference. Shoddy workmanship to say the least. He doesn't want to pull the head and replace the valves. So either I will have to get different length pushrods for each valve, adjustable rockers or adjustable pushrods. I know the geometry will be off but he insists on one of these routes. What would you do?
Al
Al