another 335i blows its turbos
06-18-08, 03:30 PM
#46
I dunno if I really see this as BMW's fault as some of you are so quick to point fingers. BMW seems to have tuned the engine beautifully from the factory. It appears that everything under the hood is in a fragile balance until you start messing with something here or there.
06-18-08, 03:36 PM
#47
Ok, lets take a look at BMWs high output models.
1) Past gen M3 - perhaps the most unreliable BMW, ever. Engines were literally "blowing up", and BMW was forced to extend warranty to 100K... Only they would not honor the warranty if they found out you "raced the car". Yeah, like people buy these to take kids to the soccer practice. Not to mention that these engine consume oil, and require the owner to check the level and add oil on regular basis. And it requires synthetic.
2) Past gen M5 - notorious for engine carbon built up, which occurs as early as 20K, and spreads through the entire engine - combustion chambers, head, ports, and chokes the engine down. In fact, if it wasn't for these issues, and if it came with an automatic tranny, I would probably be driving one.
3) Current M5 - not much information about that, but people have been reporting engine compression loss.
4) The current 335 - this thing is a joke. It overheated in pretty much every magazine review. The one that I was test driving on at a BMW event (kind of like taste of Lexus) last year overheated. I know BMW made a half assed attempt to resolve this issue by adding some additional cooler to some of the sport trim models, but most of them still overheat. I wonder if BMW even tested that POS at all before bringing it to the market.
So yeah, I know BMW diehearts are going to attack me, trying to make excuses for BMW, but these problems are facts, and very well documented ones. And a fact is the most stubborn thing in the world. It is my believe that with most of BMW's high power engines, they are not designed as such, but rather they are overclocked, overrevved, overcompressioned versions of regular engines, which weren't designed as such, and thus reliability problem. And before someone says that high performance engines cannot be made reliable, look at NSX and S2K, they have been stellar.
How many people would have the ***** to buy a past gen M3 without extended warranty? Or 335 once its out of warranty?
1) Past gen M3 - perhaps the most unreliable BMW, ever. Engines were literally "blowing up", and BMW was forced to extend warranty to 100K... Only they would not honor the warranty if they found out you "raced the car". Yeah, like people buy these to take kids to the soccer practice. Not to mention that these engine consume oil, and require the owner to check the level and add oil on regular basis. And it requires synthetic.
2) Past gen M5 - notorious for engine carbon built up, which occurs as early as 20K, and spreads through the entire engine - combustion chambers, head, ports, and chokes the engine down. In fact, if it wasn't for these issues, and if it came with an automatic tranny, I would probably be driving one.
3) Current M5 - not much information about that, but people have been reporting engine compression loss.
4) The current 335 - this thing is a joke. It overheated in pretty much every magazine review. The one that I was test driving on at a BMW event (kind of like taste of Lexus) last year overheated. I know BMW made a half assed attempt to resolve this issue by adding some additional cooler to some of the sport trim models, but most of them still overheat. I wonder if BMW even tested that POS at all before bringing it to the market.
So yeah, I know BMW diehearts are going to attack me, trying to make excuses for BMW, but these problems are facts, and very well documented ones. And a fact is the most stubborn thing in the world. It is my believe that with most of BMW's high power engines, they are not designed as such, but rather they are overclocked, overrevved, overcompressioned versions of regular engines, which weren't designed as such, and thus reliability problem. And before someone says that high performance engines cannot be made reliable, look at NSX and S2K, they have been stellar.
How many people would have the ***** to buy a past gen M3 without extended warranty? Or 335 once its out of warranty?
This engine won engine of the year in 2001 and it's the second highest hp/L ratio on a a production vehicle @ 104hp/L behind Honda S2000 and ahead of Ferrari F360 at the time.
it's an amazing engine, this goes for all BMW except overboosted Turbos
Last edited by whlkev; 06-18-08 at 03:45 PM.
06-18-08, 04:17 PM
#49
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. If an IS put a smile on your face, I guarratee you that an 335 or M3 will put a 
on your face.
06-18-08, 04:47 PM
#50
Lexus Champion
Och and Meowcat... not that I'm shocked, but you guys make it sound like 335is are overheating left and right. I've never heard of one overheat WITHOUT the secondary oil cooler unless it was being tracked hard for several laps, and I've never heard of one overheat WITH the secondary oil cooler at ALL in stock trim.
In fact I've ran my car at track days... 1.7 mile track, 10 laps... two sessions per day, in the middle of the Memphis summer with temps in the low to mid 90s and never got a hint of overheating. Granted I've got the secondary oil cooler.
I don't disagree with you that it's obviously a lacking design for them to have left out the second cooler... if the mag reviews are bringing that out then that's a flaw. But with the oil cooler the issue all but disappears as far as I've ever heard.
BTW it wasn't exactly unheard of for 2JZ-GTEs to give up when the stock turbos boost were cranked up and the cars were driven hard. Was in common? No. But so far it has not been common for 335is to give out either... we're talking about one case here and possibly a handful of others that are known of in total.
In fact I've ran my car at track days... 1.7 mile track, 10 laps... two sessions per day, in the middle of the Memphis summer with temps in the low to mid 90s and never got a hint of overheating. Granted I've got the secondary oil cooler.
I don't disagree with you that it's obviously a lacking design for them to have left out the second cooler... if the mag reviews are bringing that out then that's a flaw. But with the oil cooler the issue all but disappears as far as I've ever heard.
BTW it wasn't exactly unheard of for 2JZ-GTEs to give up when the stock turbos boost were cranked up and the cars were driven hard. Was in common? No. But so far it has not been common for 335is to give out either... we're talking about one case here and possibly a handful of others that are known of in total.
06-18-08, 04:59 PM
#51
Och and Meowcat... not that I'm shocked, but you guys make it sound like 335is are overheating left and right. I've never heard of one overheat WITHOUT the secondary oil cooler unless it was being tracked hard for several laps, and I've never heard of one overheat WITH the secondary oil cooler at ALL in stock trim.
In fact I've ran my car at track days... 1.7 mile track, 10 laps... two sessions per day, in the middle of the Memphis summer with temps in the low to mid 90s and never got a hint of overheating. Granted I've got the secondary oil cooler.
I don't disagree with you that it's obviously a lacking design for them to have left out the second cooler... if the mag reviews are bringing that out then that's a flaw. But with the oil cooler the issue all but disappears as far as I've ever heard.
BTW it wasn't exactly unheard of for 2JZ-GTEs to give up when the stock turbos boost were cranked up and the cars were driven hard. Was in common? No. But so far it has not been common for 335is to give out either... we're talking about one case here and possibly a handful of others that are known of in total.
In fact I've ran my car at track days... 1.7 mile track, 10 laps... two sessions per day, in the middle of the Memphis summer with temps in the low to mid 90s and never got a hint of overheating. Granted I've got the secondary oil cooler.
I don't disagree with you that it's obviously a lacking design for them to have left out the second cooler... if the mag reviews are bringing that out then that's a flaw. But with the oil cooler the issue all but disappears as far as I've ever heard.
BTW it wasn't exactly unheard of for 2JZ-GTEs to give up when the stock turbos boost were cranked up and the cars were driven hard. Was in common? No. But so far it has not been common for 335is to give out either... we're talking about one case here and possibly a handful of others that are known of in total.
I personally think that 335 was a rushed out attempt to compete with IS350 and G35, and it wasn't well tested or engineered.
06-18-08, 05:10 PM
#52
ok, the statement on the e46 m3 is a bit unfair as the rod bearing issue on the S54 engines produced from October 2001 - February 2002 are the only affected ones.
This engine won engine of the year in 2001 and it's the second highest hp/L ratio on a a production vehicle @ 104hp/L behind Honda S2000 and ahead of Ferrari F360 at the time.
it's an amazing engine, this goes for all BMW except overboosted Turbos
This engine won engine of the year in 2001 and it's the second highest hp/L ratio on a a production vehicle @ 104hp/L behind Honda S2000 and ahead of Ferrari F360 at the time.
it's an amazing engine, this goes for all BMW except overboosted Turbos
As far as the rest of BMW's engines being amazing, how so? Their general line up engines have always been lacking compared to the competition. Shall I remind you of the 325/525 with 180hp that we had until very recent? Or even the current 328/528 with less power than a Camry?
06-18-08, 05:41 PM
#53
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At least it sounds like his high pressure fuel pump seems to have held out.
There is no way I'd keep a BMW past its warranty period and I'm not impressed by the free maintenance program thus far.
There is no way I'd keep a BMW past its warranty period and I'm not impressed by the free maintenance program thus far.
06-18-08, 05:59 PM
#56
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Guys lets not make blanket statements. All BMWs are not unreliable. This is a dolt who went overboard on a leased 335.
When you submit engines to a higher PSI, they are more susceptible to damage.
When you submit engines to a higher PSI, they are more susceptible to damage.
06-18-08, 07:14 PM
#57
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06-18-08, 09:51 PM
#58
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Toyota's not had any engine recalls recently have they? Oh.... wait....
06-18-08, 10:03 PM
#59
48000 m3 recall, i guess that's not bad considering the recent recall in the millions for GM
06-18-08, 10:10 PM
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Ok, lets take a look at BMWs high output models.
1) Past gen M3 - perhaps the most unreliable BMW, ever. Engines were literally "blowing up", and BMW was forced to extend warranty to 100K... Only they would not honor the warranty if they found out you "raced the car". Yeah, like people buy these to take kids to the soccer practice. Not to mention that these engine consume oil, and require the owner to check the level and add oil on regular basis. And it requires synthetic.
1) Past gen M3 - perhaps the most unreliable BMW, ever. Engines were literally "blowing up", and BMW was forced to extend warranty to 100K... Only they would not honor the warranty if they found out you "raced the car". Yeah, like people buy these to take kids to the soccer practice. Not to mention that these engine consume oil, and require the owner to check the level and add oil on regular basis. And it requires synthetic.
2) Past gen M5 - notorious for engine carbon built up, which occurs as early as 20K, and spreads through the entire engine - combustion chambers, head, ports, and chokes the engine down. In fact, if it wasn't for these issues, and if it came with an automatic tranny, I would probably be driving one.
4) The current 335 - this thing is a joke. It overheated in pretty much every magazine review. The one that I was test driving on at a BMW event (kind of like taste of Lexus) last year overheated. I know BMW made a half assed attempt to resolve this issue by adding some additional cooler to some of the sport trim models, but most of them still overheat. I wonder if BMW even tested that POS at all before bringing it to the market.
You calling the car a "POS" is yet more evidence that you are a BMW hater. I guess BMW is the only manufacturer who EVER has issues with their cars. The ones you cite were either taken care of quickly by BMW and in the larger scheme of things seem insignificant or didn't exist in the first place.
The tone of your post tells me you are a BMW hater and that's fine. This is a manufacturer specific forum and there are bound to be ignorant people. You can argue all you want but no manufacturer is immune to unforeseen issues. Think about how many Tacomas, Toyota is buying back right now or how many engines Toyota has replaced in the last few years under warranty due to common issues. BMW drivetrains are very durable and I'd have no qualms about owning an E46 M3 after the warranty has expired.