[gonzo]

Originally Posted by roller84

With a larger capacity oil cooler, does that mean that more oil is needed when doing an oil change?

BMW's increases by 1 QT, that my dealer forgot to put in.

[335iheLLraiseR]

anybody have the size of the fittings on stock oil cooler?

[DrDomer]

How do you know it's actually the same one, other than it looks similar? Man... $162.99... I'm sure they pay $120 for it. The rest of the fittings much be really expensive.

Originally Posted by sambonator

I posted this in another thread, but Dinan looks to be using a Derale oil cooler.

http://www.jegs.com/webapp/wcs/store...0002_193796_-1

[jon@themshop]

I priced out the parts for the factory oil cooler kit with fender liner. Retail is about $1145.00. For labor I'll just use Dinan's labor rate at 10hrs for N54's that didn't come with a factory oil cooler.

So for cars that do have the factory oil cooler and want to upgrade to a "custom" oil cooler let see:

Derale 61908 oil cooler (source Sambonator's posting) $162.00. You can also get other size oil coolers ranging from $120-$300.

6-10ft of steel braided hose. Size can be -6 or -10 pricing ranging from $17-$50. If you don't want to use steel braided lines then the rubber ones could be cheaper or at the same price.

An fittings you could spend about $50-$100 depending on style and brand. Maybe more if you need special AN adapters.

Looks like Jegs sells oil cooler kits with the cooler hoses, and AN fittings but not all AN straight fittings won't work. Going to need 90 degree and maybe 45 degree angle.

How come no one has made a custom oil cooler for their 335i yet?

[335iheLLraiseR]

Originally Posted by jon@themshop

How come no one has made a custom oil cooler for their 335i yet?

thats what i'm trying to do, if someone could get me the sizes of the fittings.

[F32Fleet]

Originally Posted by DrDomer

How do you know it's actually the same one, other than it looks similar? Man... $162.99... I'm sure they pay $120 for it. The rest of the fittings much be really expensive.

Don't forget the add'l duct work.

[F32Fleet]

Originally Posted by jon@themshop

How come no one has made a custom oil cooler for their 335i yet?

Low demand? Not many people going to be tracking their 335's?

[hotrod2448]

Originally Posted by Socom

Low demand? Not many people going to be tracking their 335's?

I'm going to say most people figure they already have an oil cooler from BMW and don't want to be the guinea pig to see if a larger cooler makes an appreciable difference or not.

Slightly OT:

One thing I've kind of been wondering lately is if BMW didn't have to make a compromise on the OC. These cars being FI and DI with their fairly high compression ratio tend to dilute the oil with fuel pretty badly. Running the oil hot can boil most of that fuel out.

So, I think the problem for BMW ends up being keeping the oil hot enough to boil the fuel out while riding down the highway and cool enough to prevent limp mode.

[F32Fleet]

Originally Posted by hotrod2448

Slightly OT:

One thing I've kind of been wondering lately is if BMW didn't have to make a compromise on the OC. These cars being FI and DI with their fairly high compression ratio tend to dilute the oil with fuel pretty badly. Running the oil hot can boil most of that fuel out.

So, I think the problem for BMW ends up being keeping the oil hot enough to boil the fuel out while riding down the highway and cool enough to prevent limp mode.

Unlike moisture, I don't think fuel can "burn off". I have no idea..

[Mr. 5]

What I'd like to know is when an oil change gets performed, does the oil get drained form the oil cooler as well? If not, then more old oil will be sitting in Dinan's oil cooler than the stock oil cooler.

[jon@themshop]

Originally Posted by Mr. 5

What I'd like to know is when an oil change gets performed, does the oil get drained form the oil cooler as well? If not, then more old oil will be sitting in Dinan's oil cooler than the stock oil cooler.

No.. it doesn't get drained on both the Dinan and factory oil cooler. Oil thats in the oil lines and cooler does not get drained at all.

[Orb]

You can't compare high production heat exchanger to low production ones at all. There is a big difference in there rating as the slat and fin design can increase the heat rejection rating by 40% for the same package size with little or no additional pressure drop. High performance slats and fins cost upward of 10x times to manufacturer and require additional assembly time.

If this was a high performance unit and they order 400 of them the cost would be about 450.00 to Dinan and tooling would be about 10,000.

The stock oil cooler is made by Modine.

Orb

[midlife]

Originally Posted by hotrod2448

I'm going to say most people figure they already have an oil cooler from BMW and don't want to be the guinea pig to see if a larger cooler makes an appreciable difference or not.

Slightly OT:

One thing I've kind of been wondering lately is if BMW didn't have to make a compromise on the OC. These cars being FI and DI with their fairly high compression ratio tend to dilute the oil with fuel pretty badly. Running the oil hot can boil most of that fuel out.

So, I think the problem for BMW ends up being keeping the oil hot enough to boil the fuel out while riding down the highway and cool enough to prevent limp mode.

but wouldn't that mean dinan's upgraded oil cooler could potentially cause problems??

[hotrod2448]

Originally Posted by midlife

but wouldn't that mean dinan's upgraded oil cooler could potentially cause problems??

I don't think so, because most people who will upgrade most likely drive their cars hard enough to get the temp up. I was speaking about BMW having accommodate people who buy the car for the badge and never rev it over 3000RPM or only drive around the block and back.

[e46e92love]

Originally Posted by hotrod2448

I'm going to say most people figure they already have an oil cooler from BMW and don't want to be the guinea pig to see if a larger cooler makes an appreciable difference or not.

Slightly OT:

One thing I've kind of been wondering lately is if BMW didn't have to make a compromise on the OC. These cars being FI and DI with their fairly high compression ratio tend to dilute the oil with fuel pretty badly. Running the oil hot can boil most of that fuel out.

So, I think the problem for BMW ends up being keeping the oil hot enough to boil the fuel out while riding down the highway and cool enough to prevent limp mode.

No offense but that is a strong statement that shouldn't be made without a SERIOUS PROFESSIONAL doing dozens of lab test with multiple engines to determine gas content in the oil.

[hotrod2448]

Originally Posted by Socom

Unlike moisture, I don't think fuel can "burn off". I have no idea..

Why not? It's a liquid... and a flammable one with a low boiling point that evaporates quickly at that.

[midlife]

Originally Posted by hotrod2448

I don't think so, because most people who will upgrade most likely drive their cars hard enough to get the temp up. I was speaking about BMW having accommodate people who buy the car for the badge and never rev it over 3000RPM or only drive around the block and back.

jeeeeez, it is hard to remember that these people actually even exist

[hotrod2448]

Originally Posted by midlife

jeeeeez, it is hard to remember that these people actually even exist

I know it. I met one the other day though. This guy refused to rev his Mini Cooper S over 4K. I was like "How the hell do you enjoy driving with a motor that small and refusing to wind out it some?"

Some people just don't get it.

[T Bone]

Originally Posted by hotrod2448

I'm going to say most people figure they already have an oil cooler from BMW and don't want to be the guinea pig to see if a larger cooler makes an appreciable difference or not.

Slightly OT:

One thing I've kind of been wondering lately is if BMW didn't have to make a compromise on the OC. These cars being FI and DI with their fairly high compression ratio tend to dilute the oil with fuel pretty badly. Running the oil hot can boil most of that fuel out.

So, I think the problem for BMW ends up being keeping the oil hot enough to boil the fuel out while riding down the highway and cool enough to prevent limp mode.

You can actually blame the tofu eating, birkenstock wearing tree huggers for limp modes....I am serious.

BMW designed the N54 engine to run deliberately hotter to burn cleaner. I would love the see the WATER and oil temp data when these things go into limp mode.

[hotrod2448]

Originally Posted by T Bone

You can actually blame the tofu eating, birkenstock wearing tree huggers for limp modes....I am serious.

BMW designed the N54 engine to run deliberately hotter to burn cleaner. I would love the see the WATER and oil temp data when these things go into limp mode.

Not true. The cylinder temps should be hotter but, to not have adequate cooling inducing limp modes is BS.

The high compression and boost along with the relatively lean A/F thanks to DI is enough for it to burn hot and clean. They should be able to control oil and coolant temps regardless of what cylinder temps are (within reason). Unless they are deliberately keeping the oil hot for some reason. Maybe it's to boil off fuel dilution, keep the oil thin for less drag or better filtering or all of the above IDK.

[T Bone]

Originally Posted by hotrod2448

Not true. The cylinder temps should be hotter but, to not have adequate cooling inducing limp modes is BS.

The high compression and boost along with the relatively lean A/F thanks to DI is enough for it to burn hot and clean. They should be able to control oil and coolant temps regardless of what cylinder temps are (within reason). Unless they are deliberately keeping the oil hot for some reason. Maybe it's to boil off fuel dilution, keep the oil thin for less drag or better filtering or all of the above IDK.

You ought to that I am not the type of poster to make shit up..... Read the attached docs which highlights the use of coolant temp to regulate fuel economy and emissions.

It is from the N54 technical document.

[O-cha]

Why is the upgrade for the cooler-less only 200 more, it's got some serious extra hardware.