Gen 6x ??

[ttpower]

on a cast iron headed tt motor, approx. 9.8-1.. 14psi, how much timing should i b able to get away with?? right now at 8psi at 5k im at 140+ in the bfm and around 18 deg timing , on the dfi's a/f im around 13.3-13.7 no knock... i have 50# in there now.. where should i b at? more timing? less? what do you guys run? thanx so much

 

[bruce]

Originally posted by ttpower
on a cast iron headed tt motor, approx. 9.8-1.. 14psi, how much timing should i b able to get away with?? right now at 8psi at 5k im at 140+ in the bfm and around 18 deg timing , on the dfi's a/f im around 13.3-13.7 no knock... i have 50# in there now.. where should i b at? more timing? less? what do you guys run? thanx so much

Tune for performance, not to a number.
Start in the lower rpm ranges, adding a little and see what the plugs look like.

I've seen two really similiar engines and one liked 18d and the other 24d.

 

[ttpower]

thanx for you quick response.. yes i am taking baby steps w her.. now my timing curve should start to look like a U more or less right? more initial tim.. then pullin out for the torque curve.. then back in for hp?