[Tigers] Intake coolant

[Tom Witt]

AOL EmailYes, in day to day driving the heated intake manifold helps to keep fuel droplets in a vapor state. Obviously in colder weather this is even more practical. This can both increase mileage and improve emissions.  However, it would seem to not help keep the intake cooler (as in the mentioned south) unless the ambient outside air temperature was over 180+ degrees! Some engines simply use the intake manifold as a “crossover” passage between the cylinder heads for coolant flow to balance the heat in the engine.  A lot of engines also run exhaust gases under the center of the intake (under the carburetor) for the same purpose. These are basic statements about a engines in general regarding a heated intake manifold and not the small block Ford in particular.

  Your intake manifold is likely an “air gap” style.  While a heated intake is practical for reasons stated above..., it is not the best design for outright performance. A cooler intake condenses the air and puts more of it into the engine, thus increasing performance. The air gap design isolates the intake runners from any coolant, exhaust cross over gasses and even the heat from oil under the intake manifold in most “V” style engines.  If you are noticing no difference be thankful. You have likely gained some performance advantage without suffering the corresponding problems that can potential arise.

 

From: CoolVT--- via Tigers 
Sent: Wednesday, March 01, 2017 6:33 AM
To: tigers at autox.team.net 
Subject: [Tigers] Intake coolant


      Coolant is run through the stock intake. What is the purpose of the coolant running through? Thought I had heard that it was to help warm the intake in cooler weather.  Down south I am hearing it's to help cool the intake. So, what is the exact purpose?  I have an aftermarket intake on the Tiger with no coolant passages and don't see any difference.

      Mark L 
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