Overlap and cylinder pressure discussion
Thread Starter
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
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Overlap and cylinder pressure discussion I'd like to see a discussion on how lack of overlap affects cylinder pressure and detonation in a higher compression/larger cube motor. (Say 11.5-12:1) running pump gas or race gas.
Compare these two sample cams: (XE-R grinds for simplicity)
230/230 115LSA 110ICL (XER)
246/250 111LSA 109ICL (XER)
Similar valve events (IVO, etc) but completely different overlap wise.
How do you think both cams would behave on pump gas with tuning?
Compare these two sample cams: (XE-R grinds for simplicity)
230/230 115LSA 110ICL (XER)
246/250 111LSA 109ICL (XER)
Similar valve events (IVO, etc) but completely different overlap wise.
How do you think both cams would behave on pump gas with tuning?
