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BMW 3-Series (E90 E92) Forum
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ER oil cooler install
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03-14-2011, 10:21 PM | #24 |
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ER runs parallel also. Keeps temps down big time! Daily driving around 230-240. At track no higher than 260.
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03-15-2011, 12:10 AM | #25 |
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03-15-2011, 10:18 AM | #26 |
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First of all OP, congrats on the oil coolers. My only concern is that they don't both block air flow to the brakes, and also that you don't have any oil pressure issues.
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03-15-2011, 10:54 AM | #27 |
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I personally think the brake air ducts are useless, especially with aftermarket wheels. Just my opinion, but removing the brake ducts is a non-issue. ER has been racing cars for a long time and they know their stuff.
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03-15-2011, 11:14 AM | #28 | |
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http://www.caranddriver.com/features..._3a12.0_page_8 http://www.caranddriver.com/features...ng_lap-feature The driver in the car walks with a limp and a cane today. |
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03-15-2011, 11:41 AM | #29 | |||
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It mentions many times over that the brake pad compound was the culrpit as it was a low noise low dust pad not made for tracking. Not against brake ducts but you could have brake ducts the size of rhode island here, the flaw was the pads too. Quote:
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Last edited by Jeff@TopGearSolutions; 03-15-2011 at 11:48 AM.. |
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03-15-2011, 03:08 PM | #30 | ||
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I agree. I think that for ducts to be effective, they need to aim the air to the back of the rotor and not to the front of the tire where they will have trouble reaching the brakes. If there really is noticeable difference then i will get fading on track but since i have a nice bbk... i doubt ill get there unless i become much much faster.. |
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03-15-2011, 03:09 PM | #31 |
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03-15-2011, 05:15 PM | #33 | |
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oil out goes to oil cooler number 1 then runs across to oil cooler number 2 then returns to engine. stack'n the oil coolers like having two people blow down ur hot soup. just 1 at a time and not at the same time. that would be a threesome.
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03-15-2011, 05:27 PM | #35 |
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Actually i dont see any benefit from running a lower thermostat. I think the oil temps should run at around 225-235 for daily driving. All that matters is that you warm up the oil as fast as stock and dont go much higher than 250 on track.
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03-15-2011, 05:28 PM | #36 | |
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While starting earlier would lessen the opportunity of exceeding 250+. If I had it my way I would make my temps never exceed 215 as that is where oil viscosity is rated. |
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03-15-2011, 05:43 PM | #37 | |
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03-15-2011, 05:58 PM | #38 | |
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shoddy pads -- non-premium brake fluid are contributors -- he states that you should have these things -- but for a moment (yeah i know its semantics) -- look at the last line of the paragraph... "and be sure to install brake-cooling ducts." lots of folks in the past have given little thought to brake cooling, especially when modding. go fast cars need stop fast brakes-- i truly understand the need to keep the engine cool and running well, it would be ideal if aftermarket vendors took all the factors in hand while producing new components (specifically speed parts). remember the old brake dust covers for the rotors/pads = 'cause everyone tires of cleaning their wheels --- those were banned for use by BMW and if someone saw fit to use them and expect the car to perform the same way it was intitially designed -- there were in for a rude awakening. tracking a totally stock car can overwhelm the brakes -- just think when you add another 50-75-100hp ... neat fat tires will look hot, but not being to reign the car in with the binders (rotors red hot and pads glazed like a Winchell donut) at 85mph and heading for a decreasing radius sweeper can be a little touchy !! |
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03-15-2011, 06:43 PM | #39 |
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The oil goes from cooler 1 to cooler 2 and then back to the system. Our testing has shown this is considerably more efficient than running 2 oil coolers separately.
Brake ducts are awesome...when they look like this: that go to the back of the rotor/caliper. Brake ducts that shoot at your front tires are useless (factory stuff). As for lower thermostats...it's a band aid fix. Street cars it's fine as typical use does not tax the system. However, when racing different story. Let's say your starting temp is 210 vs 230. It's still going to hit whatever peak heat temp you're going to reach as thermostats don't cool anything. Oil temps when at WOT climb really fast. 20degree starting temp is not gonna make a difference. Maybe 100-200 feet longer before you hit limp mode |
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03-15-2011, 08:50 PM | #41 |
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03-16-2011, 01:17 AM | #42 |
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Well the thing is, on a stock car used for daily driving, I don't think oil cooling is a major problem. Keep in mind, this is the same BMW that on the first year 335i (2006) came with NO oil coolers. They quickly changed that didn't they?
On cars pushing more boost, this definitely becomes a problem. Now, actually tracking the car? BIG problem. The first year we started racing our 135i was probably the worse year I've ever experience racing. Imagine spends hundreds/thousands of $ to go race and not even being able to make a single lap under full power. That was our 2008 season. Every race weekend I would pray for cold weather. Every race weekend I would pull my hair out trying to figure out why and how to get the car to even make 1 lap. We finally figured out the problem and haven't had limp mode issues since. We were finally able to really dial in our car (since now we can actually make a lap) and compete. 2010 showed as we had podium finishes at every single event we went to. All this stemmed from oil coolers As for brake ducting. I don't know why BMW bothered with what they did. Car manufacturers do puzzling things sometimes. If they were perfect, they would fix the damn HPFP issue on these cars! What would have been more effective would be scoops behind the brake dust shield much like the Evos do. That in conjunction with ducts from the front would actually do something. The main thing that needs cooling are the rotors and calipers. Being that both sit inside the wheel (that turns), air needs to be directed at them. No vent at the front of the tire is going to be effective as first the wheel is in the way and second, the spinning tire causes a wall of air pressure. We've tossed those factory ducts since the very beginning in 2008 and never looked back. Still running the same rotors on the car since 2008. I'm pretty sure we're harder on our brakes than 99% of street car out there. |
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03-16-2011, 04:17 AM | #43 | |
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03-16-2011, 04:21 AM | #44 |
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ER good insight into your racing experience. I have seen data that agrees with everything you just said and that is the BMW brake ducts are useless. Maybe if I have some time I can do some scientific testing with and without the ducts.
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