Quote:
Originally Posted by B D
First off call to Barry Hershon is already in...
I've got the stock 2.0 specs for the 130 HP E cam motor but was wondering if there is any changes with unleaded gas and the reduction in octance.
The stock specs are:
idle 5 degrees ATC
2800-4200 - 17-26 degrees BTC
5K - 21-28 degrees BTC
6K - 30 degrees BTC
I had a quick check done and the advance curve starts at 1200 and I am getting 18 degrees BTC at 2,600 RPM, thoughts?
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The settings you have posted are for a 911L with smog control 901/14 and 901/17(smog pump)
For a conservative E spec 2.0 liter, I would use a Solex Type distributor and run initial of 0 deg @ idle with 30-32 @6000rpm.
A slightly hotter setup would be 67S curve and setting but Dynamic compression is high in the E compared to the S. Be mindful of the 2.0 liter combustions chambers as they are prone to detonation.
A problem with the early distributors is the lack of ability to change the curve significantly.