E90 3-series - 3 liltre engine size confusion!! HELP!!
Discussion
Fox- said:
In terms of 'age and betterness' the 325i and 330i at each given point are the same basic engine with minor differences. In the pre 57 plate cars they are both N52B30 engines. In the post 57 plate cars (There is some crossover) they are both N53B30 engines. They therefore deliver the same fuel efficiency and have the same running costs, the only real difference is that the 330i is more powerful.
The 335i is actually the older of the engines. It is based on the original M54 introduced in 2000 (Though heavily reworked) whereas the N52 and then N53 engines were all-new and technically more advanced.
The 325i is therefore fundamentally pointless unless you can find one at a really great price.
Between 330i and 335i there actually isnt much in it in terms of outright performance. The 330i is 272bhp, the 335i 306bhp and there is only half a second in it to 60. Drive both cars flat out and they'll feel similar, though the 335i edges it.
The beauty of the 335i is in its flexibility. You need the 330i in the right gear to make swift progress whereas the 335i just ****'s off into the distance seemingly whatever gear you are in. It has such a flexible powerband.
I picked the 335i though truthfully only becuase it was the first good one in the spec I wanted to come up. I'd have been equally happy with a 330i. Note the N53 330i is considerably more economical than both the N52 version and the 335i. It is also less reliable than the N52 on account of its direct injection system.
I thought their was a genuine 2.5 litre engine? The N52B25 as stated here:The 335i is actually the older of the engines. It is based on the original M54 introduced in 2000 (Though heavily reworked) whereas the N52 and then N53 engines were all-new and technically more advanced.
The 325i is therefore fundamentally pointless unless you can find one at a really great price.
Between 330i and 335i there actually isnt much in it in terms of outright performance. The 330i is 272bhp, the 335i 306bhp and there is only half a second in it to 60. Drive both cars flat out and they'll feel similar, though the 335i edges it.
The beauty of the 335i is in its flexibility. You need the 330i in the right gear to make swift progress whereas the 335i just ****'s off into the distance seemingly whatever gear you are in. It has such a flexible powerband.
I picked the 335i though truthfully only becuase it was the first good one in the spec I wanted to come up. I'd have been equally happy with a 330i. Note the N53 330i is considerably more economical than both the N52 version and the 335i. It is also less reliable than the N52 on account of its direct injection system.
http://en.wikipedia.org/wiki/BMW_N52#N52B25
FYI it's generally though that the 335i power output is undersold by BMW. Most of the magazines timed the manual 335i at under 5 seconds to 62 when it came out in 2006, which is below the published figures.
I'd dispute that the 335i isn't that much quicker than the 330i - if the 335 is .5 seconds faster to 60, that makes it roughly 10% quicker... and it also feels much quicker due to the punchier power delivery at low revs.
I'd dispute that the 335i isn't that much quicker than the 330i - if the 335 is .5 seconds faster to 60, that makes it roughly 10% quicker... and it also feels much quicker due to the punchier power delivery at low revs.
Wills2 said:
Derek Chevalier said:
S3_Graham said:
330 @ 272 bhp? That sounds high. Is that LCI?
My 130 was 261. Feels much slower than my dads 335.
I think the claimed 272 is very optimisticMy 130 was 261. Feels much slower than my dads 335.
http://www.surreyrollingroad.com/
Derek Chevalier said:
Wills2 said:
Derek Chevalier said:
S3_Graham said:
330 @ 272 bhp? That sounds high. Is that LCI?
My 130 was 261. Feels much slower than my dads 335.
I think the claimed 272 is very optimisticMy 130 was 261. Feels much slower than my dads 335.
http://www.surreyrollingroad.com/
Wills2 said:
Derek Chevalier said:
Wills2 said:
Derek Chevalier said:
S3_Graham said:
330 @ 272 bhp? That sounds high. Is that LCI?
My 130 was 261. Feels much slower than my dads 335.
I think the claimed 272 is very optimisticMy 130 was 261. Feels much slower than my dads 335.
http://www.surreyrollingroad.com/
You have no idea what state the engine was in when dyno'd, or what its history was.
Might be a Friday afternoon engine..........
Riff Raff said:
Wills2 said:
Derek Chevalier said:
Wills2 said:
Derek Chevalier said:
S3_Graham said:
330 @ 272 bhp? That sounds high. Is that LCI?
My 130 was 261. Feels much slower than my dads 335.
I think the claimed 272 is very optimisticMy 130 was 261. Feels much slower than my dads 335.
http://www.surreyrollingroad.com/
You have no idea what state the engine was in when dyno'd, or what its history was.
Might be a Friday afternoon engine..........
On the same dyno, my NSX with a sports exhaust puts out ~310bhp, so two engines that should be within a few bhp over each other are 60bhp apart.
Derek Chevalier said:
It was a late Friday engine after they had come back from a big session at the Oktoberfest! I bought the car from new, and I dynoed it before and after they replaced the cats after I complained that it was down on power. I don't dispute it may have had 272 bhp when it left the factory, but as with a lot of things on ther car (run flats, screen washer nozzles), it doesn't seem to work in the real world, suffering from loss of efficiency over time, which may well be down to carbon build up on the inlet valves.
On the same dyno, my NSX with a sports exhaust puts out ~310bhp, so two engines that should be within a few bhp over each other are 60bhp apart.
Wow so down quite a lot, I ask as I have a Z4 3.0si coupe with the N52 engine (IIRC it's stated output is around 265hp) On the same dyno, my NSX with a sports exhaust puts out ~310bhp, so two engines that should be within a few bhp over each other are 60bhp apart.
Wills2 said:
Derek Chevalier said:
It was a late Friday engine after they had come back from a big session at the Oktoberfest! I bought the car from new, and I dynoed it before and after they replaced the cats after I complained that it was down on power. I don't dispute it may have had 272 bhp when it left the factory, but as with a lot of things on ther car (run flats, screen washer nozzles), it doesn't seem to work in the real world, suffering from loss of efficiency over time, which may well be down to carbon build up on the inlet valves.
On the same dyno, my NSX with a sports exhaust puts out ~310bhp, so two engines that should be within a few bhp over each other are 60bhp apart.
Wow so down quite a lot, I ask as I have a Z4 3.0si coupe with the N52 engine (IIRC it's stated output is around 265hp) On the same dyno, my NSX with a sports exhaust puts out ~310bhp, so two engines that should be within a few bhp over each other are 60bhp apart.
I sat in the full new range of BMWs when mine was being servIced.
The interior structures struck me as similar throughout the range, but in every one there was just a sensation that build quality was just a superficial veneer. Maybe I'm expecting too much, but the interior of the M5 didn't strike me as one I'd desire when buying a car with a sticker price of £85k.
The interior structures struck me as similar throughout the range, but in every one there was just a sensation that build quality was just a superficial veneer. Maybe I'm expecting too much, but the interior of the M5 didn't strike me as one I'd desire when buying a car with a sticker price of £85k.
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