what part would you like to see made for the z4?
Posted: Wed Mar 13, 2024 1:32 am
I like your idea of the rear vents, where do you think they'd exit though, just diagonally out of the side fender? Also would this be more effective than a top mounted vent in the fender like most people do I believe. Also side note, considered repurposing the side markers as well at one point, to be exhaust exits Figured it was too difficult to manufacture though, not to mention illegalenuff_zed wrote: ↑Tue Mar 12, 2024 6:57 pmDon't forget that there is also a cooling gain to be had by extracting the air from the wheelarch, allowing cooler air to come in from outside, even if that is from around the wheel. Of course, this would ideally require a vent of some kind. For a trackday car you could cut slots in the rear of the wheelarch liner, perhaps covered with gauze mesh to reduce the crud build up behind the liner. Then look at a vent that could replace the side indicator. They are very easy to remove/refit, so you could even pop them back in for a legal trip to and from the track.brillomaster wrote: ↑Tue Mar 12, 2024 3:35 pm i think you'd be surprised at the effectiveness of some front brake ducting, even if it does just blow air into the wheel well. it'll only hit the tyre if you're on full lock, but most trackday applications you're rarely turning the wheel more than a quarter turn, miles away from full lock like you'd need to do a three point turn. and that blanking panel is ripe for a trumpet of some kind, slight turn on it and then blast it straight at the caliper would be great.
e85 z4s have zero front brake cooling as standard, and pulling through air from a high pressure point like in front of the bumper would be very effective IMO. no need to protrude into the wheel well, just an angled vent would be blasting 80mph air at the brakes. at the very least it would stop the air in the wheel well becoming hot and stagnant - as i say, zero brake ducting as standard!