Quote:
Originally Posted by GregWeld
Really...... So the 30* locked out timing on my race car engine running 13:1 is just all wrong. Geez.... who knew?
Paul - Not sure where you've gotten this information on base timing but it's just flat incorrect.
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Greg,
I'm just getting back to this thread only to find you have thrown me under the bus. Look, 12 degrees
base timing is a good setting for a
street engine. With his first starter damaged and his vid showing a backfire, it looks like his base timing was too far advanced causing a kickback damaging the starter. Now are you trying to compare a street engine to a race engine that may run down the quarter mile for 10 seconds under full throttle? Here's a real world example........look at the GM performance parts catalog which lists base timing recommendations for all of it's crate engine at 10 degrees. Why do they do this? Because they are want their customers to have a good running engines in their street cars without detonation. Now lets talk about what happens when you advance an engines timing, the spark occurs before the piston reaches TDC on the compression stroke. This works well at higher rpms but can cause problems at lower rpms and if too far advanced, can cause kickback during cranking damaging starters.
Paul