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      06-25-2016, 01:15 PM   #1
acerboo
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bonnet vent 335d

the bonnet above the turbo on the 335d gets very very hot and stays like that for some after the engine is switched off I think this is what cooks the vacuum pipes. I'm wondering if it would help to fit a vent above the turbo to assist cooling or would there be a downside to it obviously the bonnet would have to be cut/drilled
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      06-26-2016, 04:46 AM   #2
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It would look shit, that's a pretty big downside!
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      06-26-2016, 06:08 AM   #3
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Can you not run a pipe from a lower grill or from a fog light instead?
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      06-26-2016, 02:20 PM   #4
acerboo
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Quote:
Originally Posted by Dann View Post
Can you not run a pipe from a lower grill or from a fog light instead?
the thing is theres very little space under the bonnet for the heat and nowhere for it to escape I'm thinking a vent above the turbo to let the hot air our ive noticed even an hour after the engines is off the bonnet is still very hot. the m3 vents would look ok but wouldn't fit
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      06-27-2016, 04:43 AM   #5
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Ceramic coat the turbos
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      06-30-2016, 04:42 AM   #6
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You want to run a 335i! The damn thing stays hot for hours and hours!!
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      06-30-2016, 04:29 PM   #7
acerboo
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Quote:
Originally Posted by abeardo83 View Post
You want to run a 335i! The damn thing stays hot for hours and hours!!
this is my point it doesn't seem to affect the paintwork on the bonnet but there are vacuum pipes running under the bonnet above the turbos and these gat cooked with the heat I just thinking if there was a small vent above the turbos in the bonnet the excess heat could escape when the car is standing still
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      06-30-2016, 04:48 PM   #8
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A picture of what it would look like would be good. I think it would not suit the car but be good to see it visually.

They do get hot but I'm sure when hoses next need changing you can use silicone 1's that are meant to withstand the heat.

That's what I'm doing when I get vac problems. Mine were done at 70k by previous owner, poor really from BMW they should have out better 1's on at the factory.
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      07-04-2016, 05:12 PM   #9
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yes agree. my sons Porsche is the same we both end up lifting the bonnet when we stop to let them cool off!
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