Re: IML: intake manifold

[sosmi@xxxxxxxxxxx]

Not to flogg, a dead horse, but the Thermoquad was a product of reduced emissions mandates. The engine temps (t-stats) were raised in the 70's to 195 and that caused the fuel to boil in the all aluminum carbs, at the higher engine,and engine compartment temps.Maybe thats another reason my 81 Imp. has air vents to the battery.Just one more,1969 440-6pk cars had aluminum intakes,1970 440-6pk were cast iron, both rated 390hp.Manufacturing costs did that. Go figure.I guess, what it realy boils down to is, these cars are just to big, un-aerodynamic,and heavy to worry about a 1-2 mpg gain. Sorry, but I say this because I've had Hemi (426)cars that got 6-8 mpg. and lots of Dodge trucks that weren't much better. Thank God, for my 25mpg Lincoln. Thanks for the room to rant. Ya'll have a nice day. Dave

81 Imp. and many Dodges

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From: David Whitney <hazegreen66@xxxxxxxxx>

The advantage aluminum offers besides trivial weight savings is the added heat diffusion properties of the material over OEM steel.  Your air/fuel charge will be cooler when it hits the combustion chamber, providing added power = improved mileage.  This type of modification is one of a set of things that can be done to spend little money and improve power by cooling the mixture.  That was the thinking behind the Thermoquad carb design using the phenolic resin bowls.

 

Happy motoring,

David

'91 K-Imperial driver
'66 LeBaron dual air and every option known to man

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