RamJet 502 base timing - Hey Lars

Bullshark

Well-known member
Joined
Mar 23, 2008
Messages
710
Location
St. Charles, Missouri
I was wondering what you guys think about the base timing profile I am presently running on RamJet. I haven't had a chance to optimize it yet with the knock sensor, but would like to start with something you guys think is a good starting point. I know it's not a carb setup, but how does it compare to what you recommend Lars

Bullshark

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Camshaft type (P/N 12366543): Hydraulic roller
Camshaft lift (in): .527 intake / .544 exhaust
Camshaft duration (@.050 in): 224'c1 intake / 234'c1 exhaust
Cylinder heads (P/N 12363390): Aluminum oval port; 110cc chambers
Valve size (in): 2.25 intake / 1.88 exhaust; stainless steel
Compression ratio: 9.6:1
 
I would think you could use more timing in the 2000 to 2800 rpm cruise range. I have mine set at around 46-48* at light loads. (simulating vacuum advance).
 
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