Seems to be a little more pronounced since I installed the 1.7 roller rockers, but it has always "tap"ed on the number 5 cylinder, at least since I swapped to GT40P heads. It is not really bad, just a click that you can hear on every revolution. More pronounced when engine is cold, and at very low speeds (450-700rpms, and YES, the car CAN idle at 450, and it sounds DAMNED good doing it ). Once it warms up, it is almost completely gone, and you cannot hear it when it is revving. 1) Should I worry about it? 2) What is it caused from? 3) How can I fix it? Been doing it for 2 years now. Today I loosened up the valve cover and lifted it to make sure the rocker wasn't tapping on the cover like it did when I first fired it up with the 1.7s. Had to BFH the baffle to give it clearance.
It could be...maybe at the header? I will check that out next time I get it out to run. That side is against the garage wall right now...gotta share the garage with the wife's car now
I dunno, I think he has changed the exhaust more than once in the last two years. Did you do lifters with the cam?
I have an extra header flange between my header and head on that side, with a gasket between each (to clear the spark plugs on the P heads). I could VERY LIKELY have an exhaust leak right at the header flange. The spacer-flange was quite thin in some areas and I bet it is burned through one of the gaskets...
Exhaust ticks like that usually get quieter when hot, metal expands, closes up seepage area. Its all high metallurgy tech,, which I have no idea how to properly explain because of two reasons. 1. I am not very educated and 2. I cant type those words. Dan
If the ticks become like morse code you might dissmantle motor in order to rule out any more of the 7 dwarves appearing on this board. Dan
