335i overheating problems... ?

Just wanted to state that this is 3rd party hearsay ... but it seems the 335 has oil temperature overheating problems when pushed hard... the below account as far as i know, is a stock car... other forums had people state (again hearsay) that trapspeeds on the car after multiple 1/4 mile drag strip passes have gotten lower... perhaps ECU cutting timing cause its getting hot...

obivously solved by an oil cooler... but if it is indeed true, might be a significant overlook from BMW... fingers crossed...

anyone here track or plan to track their 335? anyone encounter any heat related issues?


http://forums.audiworld.com/lrqc/msgs/84866.phtml

Got to tear up the new BMW 335i twin turbos yesterday at Autobahn. We had a group out there
Posted by: DaveyKid on 2006-09-22 17:23:53
Account #: 66235

that PDI instructed and I did the lead/follows session with my group.

First, the good:

The car displays virtually no turbo lag. The acceleration feels on par with Janica's S4, it's extremely balanced on the track (I could not induce oversteer pushing them to about 8/10ths) and the stock brakes showed no fade whatsoever after a pretty hard 30 minute session. I must say, I was quite impressed. I was hitting 115 on the front straight of the north track. On top of all this, they have run flats on the car! Yes, run flats. With race rubber this car would rock! Very nice car. The backseat room is quite a bit larger than the previous model and of course the interior amenities are excellent.

Now, the bad news:

Each and every car overheated and shut down. Hmmmm, how's that? Yup! The oil temperature on every car shot to 300 degrees and the cars shut down. We learned that early on and instructed every driver to watch it closely. Driving amounted to about 5 hot laps, 2 parade laps, and so on. Never saw anything like it yet. Talk about a fatal flaw on these vehicles. Can't wait to see this happen to the general public and see how BMW responds. I guarantee you we were not pushing these so hard that no one will ever experience what we did. In fact, one of the ABCC members took a car home with him and on his ride in to the track, aggressively I might add, overheated it and shut down on him.

Every car has an achille's heal. I guess this is it.

Did you see the date on his post? September 22nd/06; this flew around the internet when it was posted, and we all later learned that none of the cars actually overheated, however one did hit hit 300F, so they voluntarily turned it off.

AFAIK there hasn't been a single owner confirmed report of overheating.

If it means anything, I took an auto 335i (one oil cooler) around the ring 5 times, non stop, (65 min total), under constant wot/brake/wot/brake and the temp never went over 120C.

Originally Posted by picus

Did you see the date on his post? September 22nd/06; this flew around the internet when it was posted, and we all later learned that none of the cars actually overheated, however one did hit hit 300F, so they voluntarily turned it off.

AFAIK there hasn't been a single owner confirmed report of overheating.

If it means anything, I took an auto 335i (one oil cooler) around the ring 5 times, non stop, (65 min total), under constant wot/brake/wot/brake and the temp never went over 120C.

humm... didnt notice the dates... i just searched and found a few threads on e90post... seems the issue was that it was running real hot... but not overheating... this is good... but i am of the opinion that the temperature gauge shouldnt read max, if its really not "too hot"...

one observation though... all but 2 or 3 people on there have never tracked their 335...

1 question ... are the temperature gauge's inconsistent between Euro and US models? meaning the # at the top end?

good deal on the 5 laps on the Ring... i have 3 laps myself... albeit not in a BMW...

The gauges are different - the US gauge goes to 300F, and the Euro/Canada gauge goes to 170C (330F). The manual states the normal operating temp of the car is anything from 170F to 330F, although even synthetic oil begins to break down around 310F, so 300 would be cutting it close.

There was speculation that the cars mentioned in that AW post were left in transport mode; but then a couple guys who were there mentioned that it was only one car that peaked at 300F, not all of them; and that car was turned off and never even threw a warning out.

One bit of pertinent info is the AT 335i only has one oil cooler as opposed to two like the MT; since the MT tends to run the oil a little hotter. It'll be interesting to see which version runs hotter (if either) when the summer comes around. I plan on tracking my car, so I will find out soon enough.

Yes. This is very ture. We have a 335 coupe automatic with paddles. The car overheated after 3-4 hard laps on the track. The Autos have NO OIL COOLER. The standard gearbox does have an oil cooler. We're in the process of fabricating oil coolers for the auto gearbox cars.

Adam

http://e90post.com/forums/showthread...ght=oil+cooler



When you say they have no oil cooler, do you mean a transmission oil cooler, or an engine oil cooler? The above diagram seems to indicate the auto has one oil cooler; but it looks like a transmission oil cooler, not an engine oil cooler.

Your correct the car has no engine oil cooler. A slight problem.

Originally Posted by 0dough2mnyideas

Your correct the car has no engine oil cooler. A slight problem.

I'd say. Kind of lame they decided to put an engine oil cooler in every single 335i except automatics in the U.S and Canada only.

You'll have to let us know when you finish fab'ing one.

keep tabs by checking out our website.
www.tcklineracing.com

Originally Posted by 0dough2mnyideas

keep tabs by checking out our website.
www.tcklineracing.com

Originally Posted by picus

The gauges are different - the US gauge goes to 300F, and the Euro/Canada gauge goes to 170C (330F). The manual states the normal operating temp of the car is anything from 170F to 330F, although even synthetic oil begins to break down around 310F, so 300 would be cutting it close.

There was speculation that the cars mentioned in that AW post were left in transport mode; but then a couple guys who were there mentioned that it was only one car that peaked at 300F, not all of them; and that car was turned off and never even threw a warning out.

One bit of pertinent info is the AT 335i only has one oil cooler as opposed to two like the MT; since the MT tends to run the oil a little hotter. It'll be interesting to see which version runs hotter (if either) when the summer comes around. I plan on tracking my car, so I will find out soon enough.

yea, i read about the automatics... but it seems from the above post that the US/Canada automatics have NO engine oil cooler, but has a tranny cooler... and all other cars have TWO engine oil cooler's and NO tranny coolers? or do the others just have ONE engine oil cooler?

yea, i was thinkin... wait till summer rolls around in the US, epsecially out west and south where its gonna get HOT...

although i read the posts where the 1 guy in Europe said he saw it on an earlier car, but not on a newer car he drove... i wonder if BMW already addressed it in the newer cars comin outta the factory? i feel the urge to go look at a 335 at a dealership and peek in its wheel-well

Originally Posted by 0dough2mnyideas

Yes. This is very ture. We have a 335 coupe automatic with paddles. The car overheated after 3-4 hard laps on the track. The Autos have NO OIL COOLER. The standard gearbox does have an oil cooler. We're in the process of fabricating oil coolers for the auto gearbox cars.

Adam

are u an official rep for TCKline? cool to hear you guys are already working on one...

Originally Posted by Iceman1

yea, i read about the automatics... but it seems from the above post that the US/Canada automatics have NO engine oil cooler, but has a tranny cooler... and all other cars have TWO engine oil cooler's and NO tranny coolers? or do the others just have ONE engine oil cooler?

yea, i was thinkin... wait till summer rolls around in the US, epsecially out west and south where its gonna get HOT...

although i read the posts where the 1 guy in Europe said he saw it on an earlier car, but not on a newer car he drove... i wonder if BMW already addressed it in the newer cars comin outta the factory? i feel the urge to go look at a 335 at a dealership and peek in its wheel-well

Manuals seem to have one tranny cooler and one engine air-to-oil cooler. You can see it in the passenger side wheel well (looking through the front mesh). Autos in other countries (Mexico for example) have this as well.

I drove a Canadian spec AT 335i around the ring 5 times, I pushed it pretty hard, ~75F out and had no problems. It was an hour of constant WOT/brake/WOT etc. I am concerned about how the car will be in the middle of summer when it's 120F out and you're stuck in traffic with the AC on... we will see.

I had a chance to drive the 335 from here in Columbus OH to Santa Barbara. Im happy to report it smoked a Cayman S near the white sands missle test range in NM. We've developed a full kit for the car. We've accepted the initial hand built order quanity from Holland. We're working with spring rates/lengths at the momement. If you'd like to see the 335 coupe with doubles and BMW FIA Motorsport wheels you can check it out at coolcarssb.com.