Sorry, i didint tell, but my car is carbed so no ecu, no maps and those things.spdracerUT said:no. ignition timing is determined by throttle position/engine load and rpms and it's programmed in the ignition maps in the ECU. These maps assume that the base timing is set to some value. So you can advance the timing by adjusting the distributor which effectively changes the base setting. So the ignition timing will be advanced everywhere.
Chamber size and all that I could see, but what does number of valves have to do with combustion speed. The valves are closed at that point (I should hope). Just curious......velardejose said:The combustion needs a full milisecond to get under way
That's 18 crankshaft degrees at 3000 rpm, or 36 at 6000 rpm
This is an aproximation, because there are other factors like combustion chamber size, shape, valve number, usw
At 7000 it would be 42 degrees...
Maybe you could use a check valve so your distributor never sees boost. Then just run your base a couple of degress retarded?dburone said:I know that too much advance would lead to detonation, but when you step on the gas, the advance works because of the vacuum, but when boost starts it will stop working, right??
I have it at stock timming, the distributor is electronic so im not sure how it works.velardejose said:dburone
How much advance are you using?
Is it fixed or centrifugal?
I am thinking about turbocharging an engine with 10° fixed advance
8.5:1 cr and max 10 pounds boost
My sc transmission is taking soooooo looong...