OK I'll start. What about the one that says a high primary compression ratio is always a good thing? I'll concede that in certain applications - like low rpm engines with a muffler and small transfer area - a high PCR does indeed help. But for a higher rpm engine with an effective pipe and more port area a relatively low PCR will make more power.2TInstitute wrote:well bring forth the discussion, the only good one I can think of is a good collection of things that are complete bullshit and old wives tales that get bandied around year after year.
Next is a shitlist of truly shit products that we got sucked in/almost sucked in by the hype.
Actually this has been known for a long time but even now you'll occasionally hear dirt bike guys talk of stuffing crankshafts...