[billspreston]

Originally Posted by DI3350

Hey! we just discover America and give a name to your city,things like that...we dont care about how did you get the temperature measurements,fahrenheit,celsius budweisser or whatever

It wasnt my intention to disturb you sorry sir!!! .

haha no worries man. cheers

[Garrett]

Originally Posted by stan@dinan

The problem

The high oil temperature in 335 is well known problem with the 335i. When we started our research on the 335i performance upgrades we verified the oil temperature problem by performing several tests. All tests were performed at an ambient temperature of between 60-70 F and at the stock boost setting and on a car equipped with the factory oil cooler. Under steady state cruise the oil temp was 240F! When driven hard on a two lane road after 10 minutes the oil temp was between 290-300 F! At Thunder hill race track the engine oil temp pegged the gauge and the control system put the car into limp home mode after 3 laps! We were shocked because this was not even a hot summer day. We were convinced at this point that the car needed a more efficient oil cooler even with stock boost. In addition to the track day, we did some testing on the intercooler and radiator efficiency and found those to be well below standard. However the radiator and intercooler were not as bad as the oil cooler so we decided to concentrate on the oil cooler first.

We first looked at placement, as it is important that the oil cooler not be placed in front of the radiator and intercooler because the heat coming off the oil cooler would then put additional burden on the all ready marginal radiator and intercooler. Therefore it was decided to keep the oil cooler of to the side like the stock unit with separate inlet and outlet. Air flow through the oil cooler was as much a problem as the size of the oil cooler itself so improved ducting would be important to the design.

Design

For those looking to reduce oil temperatures problems Dinan is now introducing large oil cooler kits for the 335i coupe and sedans. This new oil cooler will mount in the same area as the stock oil cooler on both the coupe and sedan bumper style.

The Dinan large oil cooler is a prime example of quality engineering that Dinan is known for. The tolerances and fitment for the kit is quality that can only be found at the factory. The oil cooler is made from quality materials and uses the factory BMW thermostat housing for temperature control. Even the swaged and pressure tested lightweight oil hoses have chafe resistant sleeves to keep a clean look throughout the engine bay. Because the oil cooler sits on the lower passenger side of the bumper, the Dinan oil cooler is mounted on BMW factory bushings and has special swivel type mounts that allow it to be impact resistant to curbs and the factory fog light. Just in case.

This oil cooler has a capacity that is nearly double that of stock with a capacity of 19 oz. compared to the stock volume of only 9.5 oz. Dinan has added over 13 new cooling tubes over stock which equates to a cooling tube area of over 414 sq. inches compared to stock which is 112.5 sq. inches. This is an increase of cooling percentage by over 400%! For those that are running higher than stock boost, and even those running stock boost, will greatly benefit from the temperature control that the Dinan oil cooler provides.

Along with a larger cooler the intake and exhaust for the oil cooler was improved. Testing showed the mouth of brake duct was larger than the throat would flow. So the brake duct inlet was reduced to increase the inlet to the oil cooler. During the prototyping stages of the oil cooler, the throat size was increased in the duct to the oil cooler as well. Dinan used IR temperature guns to monitor the brake temperature recovery and matched both sides to within 5 degrees. This is import to prevent he brakes from being completely off balance, meaning that under hard use; the brakes would fade unevenly, allowing one side to pull harder than the other.

On the exit side of the oil cooler, there are specially designed louvers that were engineered for two specific reasons. The first reason is to increase air flow through the oil cooler the second reason was to reduce the amount of air going into the wheel well at high speed. This reduces lift in the front of the car at high speed improving handling.

This oil cooler design has been race proven in our Daytona prototype race cars for four years and has been very efficient.


Results

The Dinan oil cooler has been designed to have its own specially sized intake and outlet for the air that moves through the oil cooler. This is the only way that oil coolers, intercoolers, radiators any other type of heat exchangers can work effectively. Most oil coolers are used improperly by being placed in front of radiators which essentially moves hot air from the oil cooler to the radiator, consequently cooling the oil and raising the water temperature of the engine. This then makes the radiator less effective for cooling the engine.

All tests were performed at an ambient temperature of between 60-70 F and at the Dinan boost setting which is increased by 50% over stock. With the Dinan oil cooler the normal operating range is lowered to 210°F at light throttle cruise. Under hard driving on a two lane country road the temperature stays between 210- 226°F range. A race track test has not been performed as of yet but we expect dramatic improvements there as well. Even with the boost increase with the Dinan oil cooler, the average temperature drop in the engine is around 30°-70°F, which puts the car below the limp mode temperature and keeps the engine safer all year round, especially those in hotter climates. While most companies try to make parts that make your car go fast, Dinan also makes parts that make your car live longer.

comparison table and package pricing


Dinan Oil Cooler


Oil Cooler Kit with lightweight lines


Vent Size Comparison


Oil Cooler Size Comparison


Louver rear view


Front side installed

Contact your local authorized Dinan dealer or call us at 800-341-5480

+10

Thnx... good quality research and design!

Price? A tad bit laughable for an oil cooler!

[DI3350]

Originally Posted by RRGOO7

LOL you discover America and give "name" to our city?

Its Budweiser btw

WE=Some of my country in the past.

Santa Monica,Los Angeles,San Diego,San Francisco ,(la) Florida,Texas (Tejas)...wanna keep learning about history?

Please lets forget this dumb discussion,i just wanna make some joke dont know why that man get mad about my comment,it was "It comes whit the installation " maybe that reads a little bit dissing...sorry!

Lets talk about BM'S

[T Bone]

Originally Posted by Garrett

+10

Thnx... good quality research and design!

Garrett, you seem to be invading many forced induction threads. Do you have a turbo car or are you even interested in turbo cars?

Just curious.

[O-cha]

Originally Posted by T Bone

Garrett, you seem to be invading many forced induction threads. Do you have a turbo car or are you even interested in turbo cars?

Just curious.

Lol "invading". With a name like that he BETTER be into turbos

[DI3350]

Originally Posted by billspreston

haha no worries man. cheers

Was my fault sir love this forum americans made :-)

[T Bone]

Originally Posted by O-cha

Lol "invading". With a name like that he BETTER be into turbos

Hey even if my last name were Hilton, doesn't mean I am a slut.

[phantomcoupe]

at 2k the oil cooler should come installed WITH the Dinan flash!!!!!!!!!

[Potty_Pants]

I wasnt planning on derailing the thread when it was orginally posted...

however I'll toss my vote in too...

$2k TOO much... $1500 people can take it.

Dinan your first to the market and can charge whatever you want. I'll wait for the others to mimic your design and charge $500.


remember folks...
its only considered rape if you dont want it and are forced to take it.

ppp

[Ruff Rider]

Originally Posted by DI3350

It comes whit the installation

Even :-(

Where does it say the price of the oil cooler includes installation?

[RRGOO7]

Originally Posted by DI3350

WE=Some of my country in the past.

Santa Monica,Los Angeles,San Diego,San Francisco ,(la) Florida,Texas (Tejas)...wanna keep learning about history?

Please lets forget this dumb discussion,i just wanna make some joke dont know why that man get mad about my comment,it was "It comes whit the installation " maybe that reads a little bit dissing...sorry!

Lets talk about BM'S

np

[DI3350]

I guess its very hot in some parts the States...2 weeks whit my 335,i've pushing it very hard and i never noticed temperature problems...lets wait for the summer and i tell you right? jajaja

[BzzzBom]

I live in Los Angeles and have a Feb 2007 build 335i coupe. It originally did not come with an oil cooler and I would occasionally hit temps as high as 270. After the dealer installed the BMW oil cooler my oil temps have never exceeded 245 degrees even with sustained 5,000 + rpms during the hot summer days. IMO, for 99% of use the Dinan oil cooler is not needed and the price is way too high.

[DI3350]

Originally Posted by Ruff Rider

Where does it say the price of the oil cooler includes installation?

It was you who said it

Sorry bout my english,gotta improve it no doubt

Well,if it doesnt come whit the installation...sorry seller...buts is defintly overpriced man! maybe in euros...hahaha

[san~man]

Originally Posted by Ruff Rider

Where does it say the price of the oil cooler includes installation?

It doesn't, that's the price of the parts only

[Garrett]

Originally Posted by T Bone

Garrett, you seem to be invading many forced induction threads. Do you have a turbo car or are you even interested in turbo cars?

Just curious.

??

I don't consider the N54 as just a turbo car... is that why your new to these boards and new to BMW..? Because you love turbos?

The 335i is a BMW that uses excellent logic with bi-turbo technology. But that is not the reason I am here. Turbo's arn't new, nor a reason to "invade" a thread. I've been around for a long time and posted on many threads.

Why your interest in me?

[DI3350]

In my opinion,that cooler is designed for desperados owners whit that oil problem who's wanna fix it however,the designer got brain hahaha

Anyway,an Forge Intercooler for VAG 1.8T which is just a little bigger piece of metal than this one cost 1.500 euros...those aftermarkt products...ya know...

[sambonator]

Originally Posted by DI3350

In my opinion,that cooler is designed for desperados owners whit that oil problem who's wanna fix it however,the designer got brain hahaha

Anyway,an Forge Intercooler for VAG 1.8T which is just a little bigger piece of metal than this one cost 1.500 euros...those aftermarkt products...ya know...

Huh?

[NRG]

Would be nice to $2300 install and software included. Something that a lot of owners w/o oil coolers would proly be intersted in myself included.

[DrDomer]

Originally Posted by RRGOO7

My car does not have a factory oil cooler and ocassionaly my temps hit 270...if the price was lowered to say around 1400-1500 and the installation cost was not a joke i would deff go for it but the price is the only factor holding me back....Dinan there are ALOT of potential customers on this forum and Dinan has a reputation for having ridiculous prices, CHANGE THAT REPUTATION....I totally understand that you have to make your buck on the deal but that cost is pushing it

I would be on this cooler if it wasn't $700 overpriced. We already know what the parts cost. Of course we have to pay for the R&D that went into it also. I don't even mind some markup since it is a niche part that won't be widely sold. But I have to agree, $2000 is much too high. If they were smart they would package the cooler with the flash for $3000 plus install. The guys that want the safety also will want the power since they're enthusiasts tracking the car.

If you're not tracking the car, temps aren't an issue. I don't care what Stan says. Flooring the car repeatedly on the back roads in 100F temps won't get it done. You have to be on boost at high RPMs for a sustained period of time. Yes the cars with a stock oil cooler will get to 290-300F on a track and maybe limp, but not the road. Those with a stock oil cooler don't need this unless they're tracking the car.

I will be tracking my car, and will attempt to get the retrofit. If I can't, then Dinan has conveniently priced their oil cooler at a price that makes paying for a stock oil cooler retrofit not worth it. So I might have to just get a TAG Kart for the price of a flash and oil cooler... At least new tires would be cheaper.

[2e9x's]

OK...I have a dumb question. Sorry in advance if I am missing something here...

I think it was determined a while back that the thermostat for the oil cooler opens at 230F. Doesn't that mean that anything below that and the thermostat is closed, bypassing the cooler? If so, how was the Dinan oil cooler keeping the their test car below 230?

I wonder if those temperatures were based on a tune + cooler or cooler alone?

[BoostedBMW]

That seems like a nice oil cooler, but the price is just ridiculous IMO. Here is the oil cooler that I ran on my turbo s2k. Along with a good 10+ feet of oil lines and aeroquip fittings this cost me $500, and that was overpriced! I can't see any way to justify spending that much money on an oil cooler, sorry.