Quote:
utheremate wrote:
first you need to know what duration your cam is to get your static advance and idle rpm settings 270=10/12@600/700rpm
280=12/14@900/1100rpm
290=14/16@1000/1200rpm
300=16/19@1100/1400rpm
then you need to estimate your total advance wich is relative to your combustion chamber (has to do with burn rate)
open wedge=36 to 38 deg
heart shaped=34 to 35 deg
closed chamber=38 to 40 deg
I've got a 280 deg cam in my mildly worked A14 with A12GX head.
What I have noticed is that I get much better idling and bottom-end performance when advancing the timing to about 10 deg. and that it really does not want to idle anything below 900rpm? Coincidence?
According to the list above, does it mean that my 280 deg cam would prefer to idle at 900-1100rpm with 12-14 deg timing?
By static advance, is it meant that you adjust the timing statically without the motor running or at idle with or without the vacuum advance connected?
And at fully advanced (mech and vacuum) I would need 34-35 deg timing.
Am I interpreting this correct? I know this would only be a base line, and that the final settings would need to be determined on the dyno.
Transfer
