65 Barracuda daily driver
Well, so there was still some ticking on cold start. I had checked the pushrods and they weren't super obviously bent, but rolling them on a piece of glass you could hear some wobbling. First I deemed them to probably be ok, but ended up getting stock replacements that I installed today. And now the ticking is even worse!! I got some Melling MPR-324 (7.5" long), which I understood was stock. They are a bit wider and that ball part is different than the old ones. I just measured one of the old ones and they might be just shy of 7.5". I'm somewhat tempted to put the old ones back, but I'm just frustrated at this point. If it's not the oil pump, oil pressure, lifters, pushrods etc - what's left? Sure, it could also be cruddy oil passages, but why did it just get worse with brand new pushrods? Might be time to take it to a shop.
Old pushrod:
Well, so there was still some ticking on cold start. I had checked the pushrods and they weren't super obviously bent, but rolling them on a piece of glass you could hear some wobbling. First I deemed them to probably be ok, but ended up getting stock replacements that I installed today. And now the ticking is even worse!! I got some Melling MPR-324 (7.5" long), which I understood was stock. They are a bit wider and that ball part is different than the old ones. I just measured one of the old ones and they might be just shy of 7.5". I'm somewhat tempted to put the old ones back, but I'm just frustrated at this point. If it's not the oil pump, oil pressure, lifters, pushrods etc - what's left? Sure, it could also be cruddy oil passages, but why did it just get worse with brand new pushrods? Might be time to take it to a shop.
Old pushrod: