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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Tue, Mar-28-2017, 04:49:24 AM   #21
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Default Re: S65 Swap into E86 (Similar to E46)

Definitely can't wait to see this thing in action. The more S65 swaps, the better!
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Old Tue, Mar-28-2017, 04:28:01 PM   #22
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Default Re: S65 Swap into E86 (Similar to E46)

oh my... *subscribed*
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Old Tue, Mar-28-2017, 05:02:29 PM   #23
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Default Re: S65 Swap into E86 (Similar to E46)

Exciting!

Subscribed as well
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Old Tue, Mar-28-2017, 05:10:42 PM   #24
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Default Re: S65 Swap into E86 (Similar to E46)

Quote:
Swapping in an S65 is actually an incredibly intelligent move for this chassis. It's lighter than the S54, performs better than the S54, and distributes weight better. It leaves more room in the engine bay for many additions.
The s65 short block (bottom end only) is lighter than the s54 short block. The S65 long block (fully dressed, top end and bottom end) is heavier than the S54 long block. BMW's advertising claim that the s65 was lighter, back when the e9XM was new, was based on comparing the weight of the short blocks-- technically accurate, but very misleading.

http://www.m3post.com/forums/showthread.php?t=953141
He weights them both, on the same scale, in the process of moving his e30 from being s54 powered to s65 powered.

That said, the shorter length of the s65 should mean that weight distribution isn't changed that much.
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Old Tue, Mar-28-2017, 05:39:36 PM   #25
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Default Re: S65 Swap into E86 (Similar to E46)

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Originally Posted by Obioban View Post
The s65 short block (bottom end only) is lighter than the s54 short block. The S65 long block (fully dressed, top end and bottom end) is heavier than the S54 long block. BMW's advertising claim that the s65 was lighter, back when the e9XM was new, was based on comparing the weight of the short blocks-- technically accurate, but very misleading.

http://www.m3post.com/forums/showthread.php?t=953141
He weights them both, on the same scale, in the process of moving his e30 from being s54 powered to s65 powered.

That said, the shorter length of the s65 should mean that weight distribution isn't changed that much.
If you strip off all the ancillaries then it's still a lighter running engine. A racecar does not need AC, PS, etc
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Old Tue, Mar-28-2017, 05:50:41 PM   #26
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Default Re: S65 Swap into E86 (Similar to E46)

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Originally Posted by ApolloTheGod View Post
If you strip off all the ancillaries then it's still a lighter running engine. A racecar does not need AC, PS, etc
You should weight them to compare! More data points are always better .

When the e30 builder I linked above compared them both in his form of race trim (both free of AC, etc), his s54/trans was 120 lbs lighter than his s65/trans.
(though his s54 was running the e36 5mt, which is ~25 lbs lighter than the 6mt that comes in the e46 M3, and presumably the s65's 6mt is heavier still since it has more power to cope with)
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Last edited by Obioban; Tue, Mar-28-2017 at 06:20:17 PM.
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Old Tue, Mar-28-2017, 06:15:22 PM   #27
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Default Re: S65 Swap into E86 (Similar to E46)

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Originally Posted by ApolloTheGod View Post
If you strip off all the ancillaries then it's still a lighter running engine. A racecar does not need AC, PS, etc
Just looked, because I was curious.

According to BMW,
S65 with no ancillaries: 158 kg
S54 with no ancillaries: 148.5 kg
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Old Tue, Mar-28-2017, 06:27:18 PM   #28
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Default Re: S65 Swap into E86 (Similar to E46)

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Originally Posted by Obioban View Post
Just looked, because I was curious.

According to BMW,
S65 with no ancillaries: 158 kg
S54 with no ancillaries: 148.5 kg
Quote:
Originally Posted by Obioban View Post
You should weight them to compare! More data points are always better .

When the e30 builder I linked above compared them both in his form of race trim (both free of AC, etc), his s54/trans was 120 lbs lighter than his s65/trans.
(though his s54 was running the e36 5mt, which is ~25 lbs lighter than the 6mt that comes in the e46 M3, and presumably the s65's 6mt is heavier still since it has more power to cope with)
It would seem I stand corrected. I appreciate you letting me know about this "clerical error" BMW seemed to perpetuate. What a shame. I will certainly weigh everything as it comes off from the S54 and I'll weigh everything that goes back in with the S65. We can finally have some numbers down.

My plan right now is still to go with the DCT which I can already tell from picking it up is MUCH heavier than any BMW 6 speed made.
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Old Tue, Mar-28-2017, 06:51:04 PM   #29
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Default Re: S65 Swap into E86 (Similar to E46)

Subscribed. This is going to be awesome!
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Old Tue, Mar-28-2017, 08:46:06 PM   #30
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Default Re: S65 Swap into E86 (Similar to E46)

Wow
Awesome build
Thanks for posting
Looking forward to finished project

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Discussing S65 Swap into E86 (Similar to E46) in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)