Re: IML: intake manifold

["Frederick Joslin" <fljoslin@xxxxxxxx>]

I believe that a modern manifold design can also improve engine power and effeciency in addition to the weight savings and cooler gas charge.

Various tests have shown an increase in both torque and HP simply by changing the intake manifold.

I had a 1995 Suburban, the last year with the throttle body fuel injection and a "wet" intake manifold. I added a 1" spacer under the throttle body and certainly noticed an improvement in torque. Something to do with increasing the amount of air/gas available as each cylinder fills

----- Original Message -----
From: "David Whitney"
To: mailing-list@xxxxxxxxxxxxxxxx
Subject: Re: IML: intake manifold
Date: Wed, 13 Sep 2006 10:12:07 -0700 (PDT)

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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Fred Joslin