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kenikh kenikh is offline
3 restos WIP = psycho
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Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,729
Dave, is the issue simply that only one reference was cited and that you need hard, empirical evidence or that you think twin scroll technology is without merit?

I think we'll all agree that anything that allows an engine to optimize intake and exhausg velocity gas velocity throughout the rev range is goodness. While I haven't read any PhD these or industry papers on twin scroll technology and variable valve train management, the overwhelming practice of these technologies by massively capitalized companies who make their money by selling optimized solutions tells the story.

The newest turbo engines from the big boys are all going twin scroll on single turbos with variable valve systems. Having talked to camgrinder at length on the effect of lobe spacing, overlap and limiting exhaust duration/lift low in the RPM band to increase boost response was an eye opening conversation.

The best minds with the deepest pockets betting the farm on these technologies are enough for me, especially since my ability to dissect the math isn't there. I accept E=MC^2 not because I can dissect the equation, but because I can understand the intuitive bases for this and also see that nuclear weapons work. I accept these automotive technologies for the same reasons.

The Mitsubishi Evo X and Bimmer turbos are the equivalent of 'the bomb' in the automotive context.

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 06-07-2010, 11:54 AM
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