What bit are you commenting on? The pan? Or something else?
I'm referring exclusively to the underbody aero changes, or essentially lack thereof. The street version and as-it-comes GT4 are a lot more similar than I expected once I dove into it.
Trans cooler is at the bottom of the front stack of heat exchanger and radiator. The extra hole/slot in the GT4 bumper is far up from it.I'm referring exclusively to the underbody aero changes, or essentially lack thereof. The street version and as-it-comes GT4 are a lot more similar than I expected once I dove into it.
I should have been a lot more clear on both of my statements, and thinking-out-loud questions. Obviously the center panel that covers the trans has been removed, and the changes to the front will affect the way the heat is pumped out of the engine bay & wheelwells. I can't find specs to see if the trans cooler unit has been upgraded itself, but that extra opening in the front bumper cover is right in front of said cooler from what I recall. The Gazoo guys swapped the pan for a reason, so it does something to help with temps. I'm just wanting to see by what margin, and if the frontal changes play directly into it too.
Yea you can stack a larger cooler up front and lose efficiency for engine cooling. That would be my last option for this car due to the air-water coolers basically taking all priority in every duct opening.
Most definitely, the extra capacity alone plus increased air flow will certainly help. My issue is that I'm def not a race engineer, so I can't say what effect altering/removing that panel may have. My fear is that the Gazoo engineers looked at it and said "Np, we can counter this with our improved front lip and wing", which is not an option for those of us in a restricted class like T2 where you are prohibited from adding aero. Is the effect minimal? Probably. But I'd love to see some data!I'm referring exclusively to the underbody aero changes, or essentially lack thereof. The street version and as-it-comes GT4 are a lot more similar than I expected once I dove into it.
I should have been a lot more clear on both of my statements, and thinking-out-loud questions. Obviously the center panel that covers the trans has been removed, and the changes to the front will affect the way the heat is pumped out of the engine bay & wheelwells. I can't find specs to see if the trans cooler unit has been upgraded itself, but that extra opening in the front bumper cover is right in front of said cooler from what I recall. The Gazoo guys swapped the pan for a reason, so it does something to help with temps. I'm just wanting to see by what margin, and if the frontal changes play directly into it too.
How about if I PayPal you the money, you buy it, measur it, send it to me? I don't mind doing it in the name of science.
did you manage to find how much trans fluid should be used according to BMW in the X3/X5/M5 ?I ended up ordering an OEM plastic pan to compare.
Here are some measurements. I was planning on doing extensive inside depth measurements but the OEM pan having the filter integrated into the pan basically makes that impossible. The only way I could truly compare fluid capacities is filling each up with fluid. I could still do that but I I would want to use trans fluid to do it so I wouldn't ruin the filters. If I had to guess by just looking at both pans and the shape/size of the filters, the X3/X5/M5 trans pan seems to have more fluid capacity.
I also forgot to measure the vertical height of the OEM pan in this round. I'll get around to it soon!
Lol, I didn’t even think of that! Lmao. Sometimes the answer is right in front of you. Thanks. Time to go find a M5 service manual…
