Race gas timing, hearing a different opinion.
hi octane race gas , burns slower than lesser gas...
Octane and burn rate are not related. Here are two examples.
A Pro Stock engine with a top RPM of 10,500 uses fuel with a very fast burn rate. Why is that? Because at high RPM you don‘t have as much time to get the burn going so a high octane/slow burn rate fuel would require far more timing than a high octane/fast burn rate fuel.
If octane and burn rate were related, you’d see Pro Stock (and any other gasoline burning high RPM a engine) running total timing in the mid to high 40 degree range and they are nowhere near that.
Take your average street or street/strip car built on forums like this. What’s the RPM range of an engine like that? Idle to 4,000? and maybe, maybe 6,000 RPM every now and then when making a quick blast? Around here you have 91 octane. That’s the best you can get. That would mean if the lower octane fuel has a faster burn rate the total timing on these engines would be in the high 20’s. And it just doesn’t happen because burn rate and octane are not related.
Ill look and see if I can find a tech article from fuel blender and I’ll post it here.
There is a ton of confusion on this.
