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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Tue, Aug-16-2016, 07:00:51 PM   #21
M_Parallel
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Default Re: M3 S50B30 in Japan

Quote:
Originally Posted by westopher View Post
The s52 has more torque throughout its rev range than the euro s50b30
Both have peak tq of 320nm. The S50 at 3600rpm, while the S52 reaches that at 3800rpm.

So at at least 3600rpm, the S50 puts out more torque.
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Old Tue, Aug-16-2016, 07:06:35 PM   #22
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Default Re: M3 S50B30 in Japan

an s52 has more area under a dyno graph up to where it redlines regardless of the peak torque being 200 rpms different. So no an s50b30 isn't "obviously more torque than an s52" like OP stated. The reason people get defensive about the US spec engine is usually because people talk about it like its a piece of shit but have no ****ing clue about it.
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Last edited by westopher; Tue, Aug-16-2016 at 07:13:10 PM.
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Old Tue, Aug-16-2016, 07:11:38 PM   #23
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Default Re: M3 S50B30 in Japan

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Originally Posted by Neubauten View Post
Well, in Europe the S50B32 is offering a significant 35hp and 30nm of torque more than the 3.0L, so it is a no brainer if you have the choice... Compared to the 240hp of the US model this is a totally different car...
Also the 3.2L has alu doors, stiffer chassis, better brakes, stiffer suspensions, a more direct steering and a 6 speed transmission...

As you mentioned 3.2L also have usually more options which make them heavier, despite the alu doors, so in terms of pure performance the difference between both models is not that huge.
But it is definitely a better car, although not necessarily more fun to drive than the 3.0L and some of the advantages such as brakes and suspension can be compensated easily through aftermarket parts. The S50B30 is also more explosive due to the limited torque at low rpm (well... obviously still more than a S52) and the single Vanos so in terms of sensation it is still interesting.
Some still prefer the 3.0. But if you use it as a streetcar, the 3.2 is the one to have. And the problems of the past, are fairly easy to solve. Vanos is no issue with the Beisan kits, making them better than they left the factory.

Only a select few got alu doors though.

The 3.2 is extremely tractable. 350nm peak is reached already at 3250. I don't have a brochure here, but at least 320nm is available from something like 2500-6000rpm. Using it as a daily grocery shopping cart, no problem.

Stiffer chassis? How's that? All M3's have the reinforcement plates, bar front strut tower plates.

The 6 speed Getrag is generally less favored than the ZF 5 speed. I can't tell as mine's an SMG.
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Old Tue, Aug-16-2016, 07:16:18 PM   #24
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Default Re: M3 S50B30 in Japan

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Originally Posted by westopher View Post
an s52 has more area under a dyno graph regardless of the peak torque being 200 rpms different. So no an s50b30 isn't "obviously more torque than an s52" like OP stated. The reason people get defensive about the US spec engine is usually because people talk about it like its a price of shit but have no ****ing clue about it.
I've never really read people calling it a piece of shit. Price of shit sounds funny

Compared it's obviously not exotic or particularly fancy to look at. But that doesn't mean it's crap.
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Old Wed, Aug-17-2016, 03:36:29 AM   #25
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Default Re: M3 S50B30 in Japan

Quote:
Originally Posted by westopher
an s52 has more area under a dyno graph up to where it redlines regardless of the peak torque being 200 rpms different..
Sorry, my (French) data sheet for S52 showed peak torque 305 Nm à 4250 rpm (while S50 is 321 Nm at 3600 rpm), it might be wrong then.

Quote:
Originally Posted by M_Parallel
Some still prefer the 3.0. But if you use it as a streetcar, the 3.2 is the one to have. And the problems of the past, are fairly easy to solve. Vanos is no issue with the Beisan kits, making them better than they left the factory.
Only a select few got alu doors though.
The 3.2 is extremely tractable. 350nm peak is reached already at 3250. I don't have a brochure here, but at least 320nm is available from something like 2500-6000rpm. Using it as a daily grocery shopping cart, no problem.
Stiffer chassis? How's that? All M3's have the reinforcement plates, bar front strut tower plates.
The 6 speed Getrag is generally less favored than the ZF 5 speed. I can't tell as mine's an SMG.
I totally agree that the 3.2L is a better car, there is no doubt.

The car is stiffer as it has much more welding points than the 3.0L.
Your comment regarding gearbox is interesting, although actually I know many people that swapped the 5 speed to the 6 speed so they can put a shorter final diff, this is a very common modification on 3.0L that are used on circuit.

Last edited by Neubauten; Wed, Aug-17-2016 at 04:00:02 AM.
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Old Wed, Aug-17-2016, 03:52:52 AM   #26
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Default Re: M3 S50B30 in Japan

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Originally Posted by Neubauten View Post
I totally agree that the 3.2L is a better car, there is no doubt.

The car is stiffer as it has much more welding points than the 3.0L.
You comment regarding gearbox is interesting, but actually I know many people that swapped the 5 speed to the 6 speed so they can put a shorter final diff, this is a very common modification on 3.0L that are used on circuit.
Having driven both on track with comparable setups, there's not a lot of difference between the two with the same driver. Besides the horrible 3.0L steering rack which is easily swapped out, and a 6th gear (only really need it for Bathurst anyway) it'd just be a matter of price and availability
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Old Wed, Aug-17-2016, 04:04:46 AM   #27
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Default Re: M3 S50B30 in Japan

better brakes?

how does the b32 car have better brakes than the b30?
Same for suspension? Stiffer doesnt mean better. Its likely slightly stiffer to adjust for weight differences.
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Old Wed, Aug-17-2016, 04:07:33 AM   #28
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Default Re: M3 S50B30 in Japan

Quote:
Originally Posted by Neubauten View Post
Sorry, my (French) data sheet for S52 showed peak torque 305 Nm à 4250 rpm (while S50 is 321 Nm at 3600 rpm), it might be wrong then.



its 321 Nm for the s52/ us spec

in reality most find the us spec snappier around town for a host of reasons. The 3.2 evo really doesnt show its might until 90+ mph.
All handle and stop well.
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Old Wed, Aug-17-2016, 04:12:38 AM   #29
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Default Re: M3 S50B30 in Japan

heres a lousy 328i... doing a btg of 8:13


imagine a "hopped up 328i" /us spec m3.
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Old Wed, Aug-17-2016, 04:19:51 AM   #30
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Default Re: M3 S50B30 in Japan

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Originally Posted by cracky View Post
better brakes?

how does the b32 car have better brakes than the b30?
Same for suspension? Stiffer doesnt mean better. Its likely slightly stiffer to adjust for weight differences.
Floating rotors on aluminum center hub on the 3.2L.
Obviously you can fit those on the 3.0L but as a OEM car, 3.2L had better brakes
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Discussing M3 S50B30 in Japan in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)