Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
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my setup is 383, 165cc heads, HSR, CS XR276HR-12 cam and my car is producing only 66 kPa (about -0,4 bar) is there any way to make it better and go to about -0,6-0,7 ??
oh i forgot add this information
0 bar = 100 kPa = 29 mercury (inHg) (that is how Megasquirt calculate pressure/vacuum)
i have: 66 kPa = -0,4 bar = 11 inHq
i need: 40 kPa = -0,7 bar = 20 inHg
changing the timing helped me when I swapped to a carbed 350 - of course after advancing the timing I had to back off the carb adjustments again to get a decent idle, but for whatever reason, it raised my vacuum plenty.
is there any way to make it better and go to about -0,6-0,7 ??
