Just curious and trying to learn something new. I see some things in your setup that don't seem to fit the average MS II setup and have a few questons.
What Nissan mechanical book are you using and what is the number for the maximum that it says you can shave?
DATSUN original FSM, Block + head maximum is 0,0079
Is it the stock P90 or P90A head?
P90 with a N42 block
Have you calculated the compression ratio?
No because i'm supposed to be in the "ok" nissan zone but probably the compression is a bit more than stock since the head is shaved but I don't think it can change that much. For the 2-1.5 degree per PSI, I don't think I can use numbers from others anyway, I'm tuning until there is no ping, so if I have a bit more compression, I understand that my timing setup gonna be lower
Why are you using a 280Z distributor? Is it locked? Do you still have a CAS somewhere?
Locked, I'm using a 280z distributor because my original setup was from a N42/N42 with all the stuff from a L28et. I'm now using a P90 head with my old N42 block. I'm planning to put a 280ZX distributor but I need a turbo shaft (I have the distributor)
What, exactly, are the timing numbers - initial, advance curves, etc.? If you're using MS II for timing, timing "by the book" doesn't really mean much, unless you're just talking about the static timing.
I was talking about the valve timing, so slot 2 on the cam gear. All my timing is rebuilt (new chain, tensionner, etc) and correctly done. My ignition timing (mechanical) is set to 0 so I can use the megasquirt properly.
Plus the basic stuff like type of gas being used and if this is for the track or for street.
91 octan without ethanol. This is my summer car but I'm planning to take it on the track few times
Also, seems like if you could supply AFR and timing curves, they would help out to use for feedback.
Yes sure, I'm going to post that later I can put my MS file if you want to look at everything too! Like I said, my engine is runing really fine when's cold of when I'm runing. When I stop, it takes few minutes of runing before it is runing fine again. When conditions are perfect, the car is runing pretty well! Like I said, I don't think the valve timing is the problem but I was curious of the symptoms. It's really not that bad, I can pull hard and have fun with my car, and with my actual settings, it doesn't ping, I think it's more of a megasquirt overall setting problem. For the rest, maybe that's just the shitty turbo cam that makes this floating feeling at high RPM[/u][/b]
As I said, just trying to learn something myself. You might be focusing on the wrong thing.
And I appreciate your help!