21 replies to this topic

[timmy850]

It does also provide a more consistent intake temperature, as the tune can at times change slightly under different ambient temperature conditions

[jaydee]

If only i had a penny for all the times i've been posting this

Heated manifolds have no ability to prevent carb icing, it happens in the venturi. You'll need a dashpot heater to prevent this.

The heated manifold was introduced simply because the better vaporization gives a better combustion resulting in 'cleaner' emissions and a slightly better mpg, and lees chance of going 'out' of tune' because the manifolds are stabilized to a certain temperature.

[HUBBA.HUBBA]

Just plumb it up, looks neater.

[Mr Joshua]

For all of you who think carb icing is the symptom and water heated inlets are the cure, please explain how the carb remains free of ice first thin on that cold damp morning until the water system has heated up sufficiently to heat the inlet manifold because the cylinder head just does not get hot enough to do this on its own. Bearing in mind 80% of engine cooling is carried out through the cylinder head (please correct if wrong). So that the cylinder head can keep all of this heat transfer from the inlet manifold to the point it requires the water system to transfer the head instead i would argue is mere fantasy.

 

Discuss.

[Mr Joshua]

If only i had a penny for all the times i've been posting this

Heated manifolds have no ability to prevent carb icing, it happens in the venturi. You'll need a dashpot heater to prevent this.

The heated manifold was introduced simply because the better vaporization gives a better combustion resulting in 'cleaner' emissions and a slightly better mpg, and lees chance of going 'out' of tune' because the manifolds are stabilized to a certain temperature.

Dude no words wasted there talk about bullet point lmao.

[mk3 Cooper S]

Pipe it up on a seperate cooling circuit if you want to cool the charged air/fuel mixture for optimum performance

[HarrysMini]

Contrary to my above post, mine is actually connected up, but I have it within the heater circuit. Therefore, when it's cold, and I have the heater on, the manifold is heated. And when it's hot, and the heater is not on, there's nothing going to the manifold. 

 

Best of both worlds. 

 

What I certainly wouldn't do, is put it somewhere where it would be permanently heated.