Spark adv vs timing
09-21-2018, 02:26 PM
#1
Tech Contributor
Thread Starter
Spark adv vs timing
I'm not the best with data logging but with my diablo intune I've logged Spark Advance. Is that the same as the Timing I should be checking to look for timing pulled, etc?
spark adv of 13.5 deg top of 3rd with coolant at 190 and iat at 93 looks low when I compare to z06s (which I've read normal timing is about 25 degrees) Car is a base kit 7 psi procharged lt1.
spark adv of 13.5 deg top of 3rd with coolant at 190 and iat at 93 looks low when I compare to z06s (which I've read normal timing is about 25 degrees) Car is a base kit 7 psi procharged lt1.
09-21-2018, 02:58 PM
#2
The timing is in the toilet because it’s an LT1 on 7psi and cast pistons. Leave it where it’s at unless you’re ready to build it because if you crank the timing up....the rings will be holding the pistons together. Fireant could probably give you some timing figures he was running when he was cast pistons with about that boost.
09-21-2018, 03:06 PM
#3
Safety Car
That is about all the timing you can run on 7psi with stock LT1 pistons. 25 degrees is the range where NA motors run. LT4's do not run that high of timing.
09-21-2018, 03:08 PM
#4
Tech Contributor
Thread Starter
The timing is in the toilet because it’s an LT1 on 7psi and cast pistons. Leave it where it’s at unless you’re ready to build it because if you crank the timing up....the rings will be holding the pistons together. Fireant could probably give you some timing figures he was running when he was cast pistons with about that boost.