classic with revesed scoop show me please
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#12
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people seem to forget that theres a huge hole under the car and at the back of the engine where hot air gets drawn out. N/A engines generate heat but dont have a vented bonnet so where does all that hot air go I wonder?
#13
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True but if you have a fmic, the scoop is pretty useless as it just rams air back in to the engine bay. Better to have a vent imho that draws the hot air out.
TX.
PS Hot air rises
TX.
PS Hot air rises
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Well NA engines don't have these big heat generating things called turbochargers sitting in the engine bay generating heat.
The reverse vents definitely do their job, I run a FMIC and use a reverse vent and if I sit in traffic then I can see the heat haze from the escaping hot air, so this can only be improved by the air pressure difference when in motion actually drawing the hot air from the engine bay.
The reverse vents definitely do their job, I run a FMIC and use a reverse vent and if I sit in traffic then I can see the heat haze from the escaping hot air, so this can only be improved by the air pressure difference when in motion actually drawing the hot air from the engine bay.
Last edited by Cannon Fodder; 31 October 2011 at 10:40 PM.
#16
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Tbho you don't really want all of the hot air escaping due to the engine taking longer to get up to temperature which will cause more wear and the radiator fan is there to extract hot air or push fresh in should it be needed.
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The S202 had the oil cooler at the front of the car - gratuitous pic as I love that car
TX.
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To me putting it where the TMIC used to be will just defeat the purpose as it will get heated up by the hot air which collects in top of the engine bay.
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I had the shape Howes has on my prefacelift bonnet, it just looked crap as the pre-facelift is smaller and sits really high.
What Banny has on the facelift bonnet looks alot better IMO.
What Banny has on the facelift bonnet looks alot better IMO.
#30
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Sure I read a post by Harvey where he tested these reverse vents. From memory, underbonnet temps were higher as opposed to using the standard scoop.
In everyday driving or even spirited blasts I can't see this being a major issue, but under track day conditions or prolonged hard driving it could become an issue.
With the scoop cool air is forced down onto the engine bay, with the vent air enters through the front of the car, over the engine and then vents through the bonnet.
Personally I think it's 6 of one and half dozen of the other and really comes down to personal preference.
In everyday driving or even spirited blasts I can't see this being a major issue, but under track day conditions or prolonged hard driving it could become an issue.
With the scoop cool air is forced down onto the engine bay, with the vent air enters through the front of the car, over the engine and then vents through the bonnet.
Personally I think it's 6 of one and half dozen of the other and really comes down to personal preference.