Just as the title says... I know I'm flirting with the line here but I mostly do freestyle and run WOT only for split seconds and then go back to quarter throttle or so. I just got a reading off my new head with 195psi. But keep in mind this is off a Harbor Freight compression tester so I've come up with what I believe my compression ratio is... I used the following equation and numbers for compression ratio:
81mm bore, 42.22mm from the top of the exhaust port to the deck, and I quickly filled the cylinder with mineral spirits at TDC to get 29cc for total volume at TDC
CR = (volume of the cylinder above the exhaust port + filled volume at TDC) / filled volume at TDC
I came up with a CR of 8.5. Is that safe for 93 octane running a total loss at 29° static timing?
81mm bore, 42.22mm from the top of the exhaust port to the deck, and I quickly filled the cylinder with mineral spirits at TDC to get 29cc for total volume at TDC
CR = (volume of the cylinder above the exhaust port + filled volume at TDC) / filled volume at TDC
I came up with a CR of 8.5. Is that safe for 93 octane running a total loss at 29° static timing?