[Fot] 123ingition distributor settings

[Mark Cook]

All,

I am installing a 123ignition distributor (laptop programmable) into my "project" TR6 race car. Wondering if anyone has this installed on their TR6 (or 250) race car with triple weber 45 DCOEs.  I thought about downloading the tuning curves from the 123 disti in my running #95 TR6 race car as a starting point:.
I realize the camshaft would make a difference in the settings, so my specs below. Both have 1.55 roller rockers.  Thoughts?

The "project" car engine has a Racetorations race camshaft, triple Weber 45 DCOE and a CR of about 12.5:1.  The camshaft specs are:

Peak Diff: Exh / Intake / LCA - 108.0 / 107.0 / 106.0
Duration: Intake / Exhaust - 336
Cam Lift:  Intake / Exhaust - 370
Checking Clearance:  Intake / Exhaust - 0.010"
Valve timing (at checking clearance) - Exhaust: Opens 96 BBDC / Closes 60 ATDC, Intake: Opens 62 BTDC / Closes 94 ABDC

The camshaft specs in my running TR6 are:

Peak Diff: Exh / Intake / LCA - 105.0 /103.0  / NA
Duration: Intake / Exhaust - 320
Cam Lift:  Intake / Exhaust - 340
Checking Clearance:  Intake / Exhaust - 0.010" (I think, but not certain)
Valve timing (at checking clearance) - Exhaust: Opens 87 BBDC / Closes 53 ATDC, Intake: Opens 57 BTDC / Closes 83 ABDC


Thanks,

Mark Cook


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