Bud Kaiser
Member
I would like to gain power by raising my compression and whould appeciate yalls experience on how high i can run on premium pump fuel.
Thanks in advance.
Thanks in advance.
- Thread starter Bud Kaiser
- Start date
Janicholson
Well-known Member
Slow running engines cannot use either advanced timing or as much high compression as 6000 rpm car engines. The flame front travels at a speed that can cause spark knock easily. With good gasket placement to avoid hot ignition points, a cold spark plug, and 101 LL av gas, I imagine an 8.5 or 9:1 CR would be doable for pulling only. Just a guess, as reality trumps theory. A three main bearing 4 cyl non dynamically balanced assembly will not live at high enough Rs to do 10:1 (opinion) Jim
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