W211 E Class / E55 CF Hood
Just picked it up actually... getting the calipers refinished right now, then I'll slap the HRE's on while I wait for the TS-6's (could be a little while). Going to get through the break-in and then do the stage 2 of course. Nice to have a benz again.
I ran a couple of vented hoods on my Supra and without question it helps with heat disappation. However, there are three major things when designing vents:
1.) Aerodynamic drag (and this can be SIGNIFICANT if the vents are not done right)
2.) Water leakage
3.) Latching / securing to body

This was an awesome hood. It is similar to the hood used on the JGTC Supra race cars, and has done over 200mph on Supras before. Few things to notice - vents HAVE to be facing backward as to EXTRACT heat with the FLOW of air. If incoming air starts flowing in TO the vents, you will not only create drag but you actually trap heat in the process. Notice also in the back portion by the passenger side window there is also a vent - that is where the hot side of the turbo and downpipe were on my car.
I'm not suggesting you do a hood this wild, but an exact copy of the Brabus hood will not yield and positive results as far as ventilation goes. Use the engineering around this hood as a starting point. The Brabus hood simply looks like holes were cut in it (which is pretty ghetto IMO) - a proper hood needs these vents designed into the mold. My hood - which is for a Toyota - cost me around $2500 including shipping from Japan. I am willing to pay more to get a hood that does it right.
Water leakage - keep the vents positioned over the motor and you will be fine. The motor is hot enough where most water evaporates very quickly and the real downside is after a heavy rainstorm you will have a dirty motor. Also be careful not to position the vents around and portion of the intake tract where water could make it into the motor itself. Our intakes run alongside the motor and although it's a fairly well sealed system some caution should be observed here.
Latching - Depending on the ridigity of the hood and how it's reinforced (if you pop your hood and look underneathe, it's not just a flat surface) may require the use of additional latching such as hoodpins or dzeus fasteners. Vents can affect the ridigity of a hood, so be careful. Since I'm sure nobody wants hood pins on a $90K MB, this is another issue whoever designs this hood is going to have to take into account.
Hope this helps,
Marcus
Thanks. I was actually panning to see after the hoods were done and after we finished the C55 and C32 lips if there would be any interest in a C55 custom frot CF lip. A Brabus replica can be done. I would probably only do that if we had maybe 10 people. I may try to get around to it when we have time. I would say its about 1-2 months away till we would work on it. So if you find something else in the meantime, you may want to go for it if you dont want to wait since we have no exact date on it.
Btw, if we were to do it, it would be much less then 1500. I would not try to ask more then 600 for it. I would try for maybe 499-550.
The Best of Mercedes & AMG
I ran a couple of vented hoods on my Supra and without question it helps with heat disappation. However, there are three major things when designing vents:
1.) Aerodynamic drag (and this can be SIGNIFICANT if the vents are not done right)
2.) Water leakage
3.) Latching / securing to body
This was an awesome hood. It is similar to the hood used on the JGTC Supra race cars, and has done over 200mph on Supras before. Few things to notice - vents HAVE to be facing backward as to EXTRACT heat with the FLOW of air. If incoming air starts flowing in TO the vents, you will not only create drag but you actually trap heat in the process. Notice also in the back portion by the passenger side window there is also a vent - that is where the hot side of the turbo and downpipe were on my car.
I'm not suggesting you do a hood this wild, but an exact copy of the Brabus hood will not yield and positive results as far as ventilation goes. Use the engineering around this hood as a starting point. The Brabus hood simply looks like holes were cut in it (which is pretty ghetto IMO) - a proper hood needs these vents designed into the mold. My hood - which is for a Toyota - cost me around $2500 including shipping from Japan. I am willing to pay more to get a hood that does it right.
Water leakage - keep the vents positioned over the motor and you will be fine. The motor is hot enough where most water evaporates very quickly and the real downside is after a heavy rainstorm you will have a dirty motor. Also be careful not to position the vents around and portion of the intake tract where water could make it into the motor itself. Our intakes run alongside the motor and although it's a fairly well sealed system some caution should be observed here.
Latching - Depending on the ridigity of the hood and how it's reinforced (if you pop your hood and look underneathe, it's not just a flat surface) may require the use of additional latching such as hoodpins or dzeus fasteners. Vents can affect the ridigity of a hood, so be careful. Since I'm sure nobody wants hood pins on a $90K MB, this is another issue whoever designs this hood is going to have to take into account.
Hope this helps,
Marcus
Very good points. And btw, that supra looks badass!
We are simply not just going to be cutting holes in the hood. In fact once i heard we want vents, my guy who was going to do it originally is not going to do the job. So instead my other contact who works for a large company making and designing custom hood is going to do the job. They will strategically place the vents where need be according to the car, and not just cut anywhere. The vents will help dissipate heat. Maybe not as much as the hood on your supra, but there is always a compromise with looks and performance. So this should be somewhere in between. Just like i mentioned somewhere else, these vents are something similar although not exact to what comes stock on a jaguar XKR.
We are simply not just going to be cutting holes in the hood. In fact once i heard we want vents, my guy who was going to do it originally is not going to do the job. So instead my other contact who works for a large company making and designing custom hood is going to do the job. They will strategically place the vents where need be according to the car, and not just cut anywhere. The vents will help dissipate heat. Maybe not as much as the hood on your supra, but there is always a compromise with looks and performance. So this should be somewhere in between. Just like i mentioned somewhere else, these vents are something similar although not exact to what comes stock on a jaguar XKR.

To be honest, we are not going to do anything but the brabus type vents. As is we are already doing whatever we can for those vents and not the regular OEM hood. I do not plan on any other types of vents or heat extraction vents other then the brabus style. I am already having my guy who creates hoods for a living help me out and do all the engineering to make it right. I tell him what i want and he makes it right.
Last edited by BlackC230Coupe; Jul 29, 2005 at 02:10 AM.
Absolutely. I will PM you once we get the hoods all taken care of.
Also, no body addressed Marcus's issue about hood pins..are these going to come with a hood latch and hydraulic arm to lift the hood? I've got a CF hood on my Audi, hood pins and a straight rod to keep the hood open when I'm showing or need the access. You guys want to do it this way or retain factory opening/closing features?
Also, no body addressed Marcus's issue about hood pins..are these going to come with a hood latch and hydraulic arm to lift the hood? I've got a CF hood on my Audi, hood pins and a straight rod to keep the hood open when I'm showing or need the access. You guys want to do it this way or retain factory opening/closing features?
I will check and see if the W211 E-class/E55 hood is the same as the wagon.
About the Hood pins! no way! This hood is going to be an OEM quality hood only carbon fiber and hopefully the vents. It only comes with the hood. You simply use your stock hood latch and attach all the hood shocks to it just like you would if you were to replace your stock hood. So the hood will operate just like your stock hood does now.
I know it can never be 100% perfect, but it should look pretty good when you are up close to it.




