Useless Spoolup Info

[good2win22]

The earth's atmosphere contains 78% nitrogen, 21% oxygen and 1% other gases of which .03% is carbon dioxide, the composition and percentages of those gases remains constant no matter what the elevation is but the pressure decreases as the elevation increases.

Correct, but why mention % since all calculations are done with pressure and volume?  I do realize the last portion kind of explains that.  For me I always use the diameter formula for calculating volume, not radius because you don't buy pipe by radius even though it does give you the same answer.

I used percentages of the contents of the atmosphere to represent the atmosphere as a whole.  It was not meant as part of the equation, only to represent the contents of our atmoshpere when measured in inMg or mBar at sea level

[motorhead]

Let's keep this thread rolling. True or false. Higher compression ratio produces more exhaust velocity and more heat...thus quickening spool time.

Static or Dynamic?

Hence my point about cam timing.  The valve events mean a lot.

http://www.hptuners.com/forum/showthread.php?35092-Basic-VVT-Tuning-info

http://www.theturboforums.com/threads/369240-How-does-cam-overlap-affect-spool-rpm

http://www.hotrod.com/how-to/engine/ctrp-1106-turbo-camshaft-guide/

Who is more right?  I'd say the guy with the quickest car.

[Scoobum]

The TSM guys are handcuffed with the 3 bolt turbos. The reading I'm doing suggests they're using some real oddball cam grinds...espec ially in respect to exhaust cam timing.

[TexasT]

What are they trying to accomplish with the odd grinds? Open longer to let the incoming charge push the exhaust out?

[motorhead]

What are they trying to accomplish with the odd grinds? Open longer to let the incoming charge push the exhaust out?

I am certain exhaust duration and overlap are key players in tuning around (band-aiding for) a restrictive exhaust scenario.