Inlet manifold temp

[scott]

I just posted this on RS site but thought id stick it on here as well, any thoughts?

I went 4 a 40 mile drive 2day, when i got home with the engine still running a popped the bonnet and put my hand on the inlet manifold and found it was only just warm.
Is this normal on a clio trophy?
My old FF 182 inlet manifold used to get hot after a 40 mile drive, this did have a viper induction fitted, does this prove that the standard clio air box keeps the inlet manifold temp down due to sucking more cold air than a after market induction?
If this is indeed true then a better panel filter, removal of the pointless acoustic valve and maybe a bit of extended pipe down to the lower grill should have excellent results.
The temp showing on the guage in the car was about half way as normal.

 

[Russ_16v]

weird mate,my ph1 172 has a std inlet and its only in the summer when my inlet gets hot,most of the time i can hold my han on my inlet no probs

 

[Luke335]

I've been watching this recently on a scandisk OBD reader I have. It shows the air inlet temperature. On normal driving the air temperature is about 10 degrees C above the outside air temperature. When I was caught in traffic the temperature rose to about 30 degrees above the outside temperature. Given a few miles clear traffic it will cool down again.

I don't know what the viper is like, but I think any open induction kit is just going to take hot air from the engine bay like the standard airbox in traffic. I think a closed kit with a cold air feed would be best.

I don't think a different filter will make a noticeable difference. I couldn't tell any difference when I fitted an ITG filter.