Vabene7

Does anyone know where I could find a vented hood for my w220?
Nothing too aggressive or necessarilly carbon fiber, just vented....

-Chris

Quadcammer

I'm very glad to say that I've never seen one and hope I don't ever see one.

babyman1737

+1

sh*t, +1,000

ShangoAshe

+1 haha it just sounds "cheap" no matter how you look at it!

LAL

I can't even picture that........

classyS

hmm maybe get a simple carbon fiber hood for the weight reduction (not sure how much less reduced compared to original?) then paint match it to the rest of the body

babyman1737

Right, that extra 20lb savings will do a lot on a 4,000lb sedan, especially with all the track work people do on the w220.

classyS

the whole project would be around $1000+ hood & paint maybe for 20lbs less, NOT worth it lol

Vabene7

I wasn't looking to make it appear more aggressive, but only to find a way to exhaust all of that heat trapped under the hood.
I have noticed my car keeps it's coolant temp over 100 degrees, 5-6 hours after the car has been shut off....

classyS

its insane how the turbo exhaust housing gets red hot, not sure with the s600 turbos but im pretty sure the oil running in the turbos must be really hot after a while.. what would be crazy is to do a decadent mod like mclaren f1 and the engine bay lined with gold lol

tusabes

While I dont recommend it, if you are just trying to vent heat, you can just remove the rubber weatherstripping around the edges of the engine compartment and hood, then all the heat will escape much easier through the gaps around the hood edges. Its sealed pretty tightly from the factory. You'll also need to be a lot more careful during car washes and rains (or put the weatherstipping back on).

You can also do some fender vents, either cut custom ones in or use Lorsiner style fenders and make the vents functional.... though again I wouldnt recommend it.

A final option is to pop the hood once you pull it in the garage. This is what I would probably do, and depending on your house layout, it can even help with home heating costs in the colder months

Vabene7

So funny you said that (last option).
I am so particular/kookey, that is exactly what I do....Pop my hood in the garage to promote the cooling off of the engine compartment.
Of course, it makes my garage 200 degrees hotter than the sun....

chpsk8

Just wondering what the advantage of cooling the engine off faster would be...

tusabes

He has a turbo v12 car and you want to cool the turbos as quick as possible after shutdown. because the oil is no longer flowing, oil pump is off and if hot oil is just sitting there it will "coke" or burn into a sludgy goo.

If you keep heating oil on the stove without putting food in , you would get similar results and a whole lotta smoke in your kitchen.

benzat17

there s a vid on youtube for a russian s class with a vented hood im looking for it.. once i find it ill post it

babyman1737

Well the answer to that is a turbo timer, but I don't think I've ever seen anyone with a turbo timer on a Mercedes.

classyS

yeah id suggest a turbo timer too if they make one, also couldnt u just leave the car running 2-5 mins after just like a turbo timer??

babyman1737

You could, but that's a pain, and would actually cause the car to get pretty warm it seems. Here's how I see it: MANY Mercedes come with turbochargers, and I don't think many of us can think of a single one with a turbo timer.
It would probably be best not to WOT or boost the turbo too much before you shut down though.

I've strayed from the OP topic a little bit, but while I'm on that note: Full synthetic 0w-40 is ABSOLUTELY necessary for this same issue. That oil runs through the turbochargers too. If you use a different grade or viscosity in some other car it won't be as bad. If you use the wrong stuff in a turbocharged car....well just don't do that. The grade and viscosity has been carefully chosen by Mercedes. So the sludging and goo that tusabes talks about shouldn't be too terribly bad. Hopefully.

tusabes

Yeah Ive never seen a turbo timer on a MB. VaBene's car is modded so it sees more boost and its especially crucial to avoid oil coking

Vabene7

So the other evening I get on the throttle hard and up flases "Add Oil" on my display. I take it easy all the way home, park it and 15 minutes later I check the oil level with the automated system. 2 Quarts low!!!
No wonder why she was running hot. I added 2 quarts I had in the garage and sure enough my coolant temp lowered about 15 degrees, rather than the 100 to 120 celcius it had been showing.

Do our cars, especially the V12TT, burn oil? I am wondering what the hell happened to my other 2 quarts of oil.....supposed to have 9.5 quarts in total...

Dynodaddy

These cars do not need turbo timers because the cartridge (hold the ball bearings) is water cooled. They do not get nearly as hot as turbo's with bushings or ceramic ball bearings.

Vabene7

Back to the OP.....I removed the water catch tray under the vents that are on the OEM hood....not that there was a noticeabe coolant difference, while driving.
And to see if rain or washing would give me issues, I got brave and washed the car as I normally do (I only hand wash), not taking any great care to avoid the vents.....no prolems so far.
The car is also garage kept, so I am sure that helps....

-Chris