Tappet
ha, makes me think of that radio show ,, Car Talk, with the "tappet brothers", Boston guys I think.
would occasionally hear it on npr here in Montreal, couple of wacky characters that made for fun, often sarcastic humour listening.
seems to me one of them died a bunch of years ago
but wait, we can't admit to being petrolheads here can we? Naw, we can be both. I've always been.