So with the ARC flywheel which is 32* and the #5 key that puts me at 39.64 advanced. Sounds like that would cause detonation to me, but it’s running fine.As has been said, you do have to know where you're starting from as far as advance is concerned. I have a spreadsheet that will tell you exactly how far a cut key will advance your timing depending on how much is removed and how thick it was to start. You also have to know where the stock timing is.View attachment 6623
So your theory says that with that timing, there's automatically going to be detonation, right? Are you implying that my spreadsheet is wrong? I won't dismiss that idea out of hand, anything's possible. Have you actually put a degree wheel on your engine and checked the timing advance? That would go a long way towards proving your theory. What well in and in and in a you are what they people that went out and is a
While advancing your timing excessively can produce detonation, it's not automatic. Detonation is mostly the result of excessive heat and/or pressure, maybe you're not experiencing that? Many many reasons why that could be so.
Interesting, so the #5 key refers to the amount of advance, I didn't know that. Easy enough to measure. That means removing .0327" would give you 5° advance. Good to know, thank you. Not that it's super important, but can they hold that kind of tolerance? Like I said, easy enough to measure.Honda stock GX200 flywheels are 20* BTDC, a #5 on a stock GX200 flywheel gives you 25* If the plastic seating around the magnet is black it is GX200 20* if the plastic seating is white it is a GX160 flywheel at 25*.
My Question is does Honda even make an advance key ?Honda stock GX200 flywheels are 20* BTDC, a #5 on a stock GX200 flywheel gives you 25* If the plastic seating around the magnet is black it is GX200 20* if the plastic seating is white it is a GX160 flywheel at 25*.