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      06-15-2015, 03:48 PM   #1
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Intake Cover?

Should there be a cover on the left side of the lower radiator + intake?
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      06-15-2015, 03:58 PM   #2
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Quote:
Originally Posted by kaisiw View Post
Should there be a cover on the left side of the lower radiator + intake?
Not necessarily. If you have a sportline, one of the fog light trims has a cover the other side does not.
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      06-15-2015, 06:02 PM   #3
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Quote:
Originally Posted by bahasad View Post
Not necessarily. If you have a sportline, one of the fog light trims has a cover the other side does not.
Mine is a sportline. but the radiator has some damage from rocks....should I do something to cover it up?
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      06-15-2015, 07:28 PM   #4
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Quote:
Originally Posted by kaisiw
Quote:
Originally Posted by bahasad View Post
Not necessarily. If you have a sportline, one of the fog light trims has a cover the other side does not.
Mine is a sportline. but the radiator has some damage from rocks....should I do something to cover it up?
No. It's supposed to be that way. It it's the aux radiator. The other side is blank because you don't have the m sport with the aux oil cooler. That normally goes on the other side if you have a 335.
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      06-15-2015, 08:09 PM   #5
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not an intercooler?
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      06-15-2015, 09:43 PM   #6
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Quote:
Originally Posted by kaisiw View Post
Mine is a sportline. but the radiator has some damage from rocks....should I do something to cover it up?
You can get a trim piece for the other side that will be covered as well.

Here are some threads:

http://f30.bimmerpost.com/forums/sho...d.php?t=709518

http://f30.bimmerpost.com/forums/sho...d.php?t=779373
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      06-16-2015, 06:19 AM   #7
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Quote:
Originally Posted by bahasad
Quote:
Originally Posted by kaisiw View Post
Mine is a sportline. but the radiator has some damage from rocks....should I do something to cover it up?
You can get a trim piece for the other side that will be covered as well.

Here are some threads:

http://f30.bimmerpost.com/forums/sho...d.php?t=709518

http://f30.bimmerpost.com/forums/sho...d.php?t=779373
You do not want to cover this. It is for engine cooling. Hot engine = bad.
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      06-16-2015, 08:38 AM   #8
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Quote:
Originally Posted by SoCalDave View Post
not an intercooler?
Seriously? You don't know where the intercooler is on your car? Try looking at the center lower grille opening. The air/air intercooler resides there, and it's much larger than the aux radiator and aux oil cooler.

And no, you don't "cover" auxiliary radiators, oil coolers, or A/C condensers...the whole point is to have air passing through these things to lower the temperature of the fluid flowing through them. You could get some sort of mesh/screen to keep objects from hitting them, but you do not want to in any way inhibit airflow.
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      06-16-2015, 08:37 PM   #9
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Quote:
Originally Posted by roundel335 View Post
Seriously? You don't know where the intercooler is on your car? Try looking at the center lower grille opening. The air/air intercooler resides there, and it's much larger than the aux radiator and aux oil cooler.

And no, you don't "cover" auxiliary radiators, oil coolers, or A/C condensers...the whole point is to have air passing through these things to lower the temperature of the fluid flowing through them. You could get some sort of mesh/screen to keep objects from hitting them, but you do not want to in any way inhibit airflow.
Seriously..no. I know cars....but not a lot about BMWs and turbos. I know what they all do and most parts involved, but have never wrenched on a BMW etc..but I thought the intercooler was on the side and the radiator was in the center hence the stupid appearing question. Guess I had it backwards. No..I wouldn't cover it either. I've barely popped the hood on my car only having it 2mos. Can't see squat under there with all the plastic covers, etc...and I haven't had time to tinker yet.
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      06-17-2015, 08:01 AM   #10
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Quote:
Originally Posted by SoCalDave View Post
Seriously..no. I know cars....but not a lot about BMWs and turbos. I know what they all do and most parts involved, but have never wrenched on a BMW etc..but I thought the intercooler was on the side and the radiator was in the center hence the stupid appearing question. Guess I had it backwards. No..I wouldn't cover it either. I've barely popped the hood on my car only having it 2mos. Can't see squat under there with all the plastic covers, etc...and I haven't had time to tinker yet.
Actually, the radiator IS in the center, but it's up higher - behind the kidney grilles. The intercooler is below it in the center opening. The aux radiator is on the right (passenger side) of the intercooler. On an M-Sport, there is an aux oil cooler to the left (driver side) of the intercooler to help cool down the oil that circulates through the turbo bearings. I guess they figure M-Sport owners will drive more agressively and thus work the turbo a lot harder, which raises the oil temp.

When turbos went into widespread use in WWII piston-engined fighter aircraft to allow them to fly at higher altitudes where the air is thinner but colder, an intercooler wasn't all that necessary. On the ground, though, the heat generated by the exhaust can't be overcome by the ambient air temp, hence air-air and air-water intercoolers. Early turbo cars, like the Corvair, Porsche Turbo, and the first Volvos with turbos didn't have them and the gains were not near as great as with an intercooler. The only downside is that there's a bit of pressure loss going through the intercooler, but it's minimal.
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      06-17-2015, 10:42 AM   #11
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Quote:
Originally Posted by roundel335 View Post
Actually, the radiator IS in the center, but it's up higher - behind the kidney grilles. The intercooler is below it in the center opening. The aux radiator is on the right (passenger side) of the intercooler. On an M-Sport, there is an aux oil cooler to the left (driver side) of the intercooler to help cool down the oil that circulates through the turbo bearings. I guess they figure M-Sport owners will drive more agressively and thus work the turbo a lot harder, which raises the oil temp.

When turbos went into widespread use in WWII piston-engined fighter aircraft to allow them to fly at higher altitudes where the air is thinner but colder, an intercooler wasn't all that necessary. On the ground, though, the heat generated by the exhaust can't be overcome by the ambient air temp, hence air-air and air-water intercoolers. Early turbo cars, like the Corvair, Porsche Turbo, and the first Volvos with turbos didn't have them and the gains were not near as great as with an intercooler. The only downside is that there's a bit of pressure loss going through the intercooler, but it's minimal.
Thanks for the info. I had a Mitsu Mirage turbo back in '87..quick little car but it didn't have an intercooler either. You also had to let the car sit at idle for a minute or 2 after driving so you wouldn't cook the turbo bearings..(which happened anyway...car still runs..but the turbo was toast. Car had about 20hp that way.) I still revert to that practice in my GC..I'll sit and let it idle for about a minute after driving it...even if technology is come a lot further since '87 .
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      06-17-2015, 03:44 PM   #12
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I was under the impression that M-Sport models had an additional coolant radiator on the driver side, not an oil cooler.
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      06-17-2015, 03:53 PM   #13
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Quote:
Originally Posted by SoCalDave
Quote:
Originally Posted by roundel335 View Post
Actually, the radiator IS in the center, but it's up higher - behind the kidney grilles. The intercooler is below it in the center opening. The aux radiator is on the right (passenger side) of the intercooler. On an M-Sport, there is an aux oil cooler to the left (driver side) of the intercooler to help cool down the oil that circulates through the turbo bearings. I guess they figure M-Sport owners will drive more agressively and thus work the turbo a lot harder, which raises the oil temp.

When turbos went into widespread use in WWII piston-engined fighter aircraft to allow them to fly at higher altitudes where the air is thinner but colder, an intercooler wasn't all that necessary. On the ground, though, the heat generated by the exhaust can't be overcome by the ambient air temp, hence air-air and air-water intercoolers. Early turbo cars, like the Corvair, Porsche Turbo, and the first Volvos with turbos didn't have them and the gains were not near as great as with an intercooler. The only downside is that there's a bit of pressure loss going through the intercooler, but it's minimal.
Thanks for the info. I had a Mitsu Mirage turbo back in '87..quick little car but it didn't have an intercooler either. You also had to let the car sit at idle for a minute or 2 after driving so you wouldn't cook the turbo bearings..(which happened anyway...car still runs..but the turbo was toast. Car had about 20hp that way.) I still revert to that practice in my GC..I'll sit and let it idle for about a minute after driving it...even if technology is come a lot further since '87 .
Good habit, but you do not need to let it idle. It's a waste of gas and time. The water pump will run long after you turn the car off.
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      06-17-2015, 04:39 PM   #14
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Is that the electronic noise I hear after I shut the engine off? The water pump? Interesting!!!

Time wise...a minute doesn't bother me as I'm not usually in any hurry and the gas is probably minimal but good to know it's unnecessary
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      06-17-2015, 05:30 PM   #15
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Quote:
Originally Posted by SoCalDave
Is that the electronic noise I hear after I shut the engine off? The water pump? Interesting!!!

Time wise...a minute doesn't bother me as I'm not usually in any hurry and the gas is probably minimal but good to know it's unnecessary
We would have a million failed turbos by now, and it would say that it in the owners manual.

All turbos now do not need cooled off.
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      06-18-2015, 08:18 AM   #16
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The water pump cools the oil in the turbo bearings to keep it from "coking", which is what happens when it reaches too high a temperature and begins to solidify when circulation is stopped. When the engine is running, the oil carries the majority of the heat, hence the requirement for an oil cooler. Even the non-turbo Porsche engines and VW engines were partially cooled by oil and were fitted with oil coolers of one sort or another.
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