Old Feb 5, 2004 | 01:00 PM
  #122  
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turbo man
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Joined: Jul 2003
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From: Birmingham
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You all crazy.

People HAVE to go low comp to compensate for the fact that they can't cool the air enuff before it enters the cylinders.

It costs ALOT more to run systems to cool the air enuff to run high boost on high comp.

thats all it is.

on high comp high boost you have to run even bigger coolers to bring the temp down to an operable level (assuming boost at same as low-comp)

thus you outwiegh the "benefits" if you go too far, ie boost is so high, and comp is so high, that cooling system is so big it takes 5000rpm to fill the system to operable pressure.

what you all need to do is get a book on turbo'd dragsters yank style.

methanol injection (if not fully fueled) is the way forwards.
CO2 spray on intercooler (if not methanol) is also the way.
reasonable sized cooler (not truck style like that red escort avec lorry cooler)

on yank dragsters they spray methanol into the system b4 cooler, over the cooler, and run the thing on methanol!

they put like 14:1 CR with 30+psi easy, an they do 1500-2500hp+

all it is is making sure the peak compression temperature does not exceed the natural fuel ignition temperature. and its not an easy thing to do. else we'd all be doing it!
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