[DeTomaso] NPC Anyone know much about the GM direct injection 300 HP V6

[JDeRyke at aol.com]

In a message dated 12/16/08 3:11:40 PM, kenn_green at yahoo.com writes:

> I was told that this engine is cleaner and makes more HP than non-direct 
> injection motors.  So is this another major step in engine evolution, big or 
> small?
> 
Maybe. It works like a diesel in that fuel is sprayed directly into the 
chamber at around 1200-1600 psi and only air goes thru the intake & past the 
valves. The only real 'breakthru' is sealing a high pressure gasoline pump that can 
be mass-produced. This was the stumbling block for decades- the mid-'50s 
Mercedes gullwings had direct injection fuel pumps with internal clearances 
measured in angstroms.... In any case, D.I. engines are un-modifiable by you & I, so 
personally, I'm not interested in yet another hands-off black-box. Expecting 
the Gov't to seal all street engines any day now. Sigh- J Deryke 


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