US s50/52 vs m30b35

[lennon]

For what it's worth, a Euro S50B32 conversion is gonna cost around $7k and an S54 will cost around $9k--- Those are the minimum you'll pay with low to average parts cost doing all of your own mechanical work (assuming most garage mechanics can't tackle MSS54...). I can tell you that my very healthy 70k S52 with all of the bolt-on go-fast parts cost me $5k-ish. My new engine is closing in on the $10k figure--- fast.

This is my opinion based on extensive research of both conversions and the effect it's already had on my wallet..

yea i was referring to the prices being closer with a real extreme s52. one that was close to a stock euro or s54 motor in output.


OP, heres metric mechanic's m50-based list. maybe not the authority on 24v motors, but just an example for you. those prices on the right column are core deposits. if youre skilled you could build one cheaper but you see why it becomes impractical unless its a race car that needs to keep the same engine.


3200 HiFlo ST Sport OBD I or II 275 HP $8,995 $2000 - $3500
3000 HiFlo ST Rally OBD I or II 265-285 HP $8,995 $2000 - $3500
3100 HiFlo ST Rally OBD I 270-290 HP $9,495 $2000
3200 HiFlo ST Rally OBD I or II 280-305 HP $10,495 $2000 - $3500
3300 HiFlo ST Rally OBD I or II 295-315 HP $11,995 $2000 - $3500
3400 HiFlo ST Rally OBD I or II 305-325 HP $13,995 $2000 - $3500

[rThor432]

Word.

Ha, plus one. Good (great) point about the fact that he hasn't driven a swapped E30 anyway..

[rThor432]

For what it's worth, a Euro S50B32 conversion is gonna cost around $7k and an S54 will cost around $9k--- Those are the minimum you'll pay with low to average parts cost doing all of your own mechanical work (assuming most garage mechanics can't tackle MSS54...). I can tell you that my very healthy 70k S52 with all of the bolt-on go-fast parts cost me $5k-ish. My new engine is closing in on the $10k figure--- fast.

This is my opinion based on extensive research of both conversions and the effect it's already had on my wallet..

[Wh33lhop]

300bhp is a lot on an s52. mike30 had a vac head, cams, 11:1 pistons, etc, etc, all the best, and i think he made like 280whp with some tuning left. find his thread, then ask him how much hit cost, then price an s54. or just stop thinking you need some arbitrary power figure when youve never even driven any swapped e30s.

Word. Even my chipped M50NV feels pretty quick when the car's empty. :p

[LowR3V'in]

:-x

[lennon]

If this is true, and I believe it is, then why is everyone saying 250whp/300bhp is gonna cost $$$ n/a in a us s52? Raise the compression, bigger injectors, some head work, and full headers should get 300bhp?

300bhp is a lot on an s52. mike30 had a vac head, cams, 11:1 pistons, etc, etc, all the best, and i think he made like 280whp with some tuning left. find his thread, then ask him how much hit cost, then price an s54. or just stop thinking you need some arbitrary power figure when youve never even driven any swapped e30s.

[Wh33lhop]

AFAIK there was a euro s50b30 and s52b32, the b30 had 286hp and the b32 had 321hp. But I don't want to start an argument over that, and I could be wrong. I'm not concerned about budget, I don't have a lot of money, I'm just willing to save to get what I want.



Is your s52 stock minus the OBD1 conversion? Yeah I realize finding parts would be an issue as well. Would it would be more cost effective to build an US s52b32 then? Here is a catch: If you build a US s52b32 you're using all custom parts, why not just replace any worn parts on the euro motor with custom parts? Either way when it comes time to replace/repair, you'll be using custom parts... no?

There is no Euro S52. It's euro S50B30 (286hp) and S50B32 (321hp). Mind you, IIRC the latter was factory underrated, but they're still a very stout motor.

[onaquest]

bfc? is that bimmerforums?

yup

[iXguido]

Look through various build threads on bfc to get an idea. It's going to cost even more money trying to get 250whp out of N/A m30 ;)

bfc? is that bimmerforums?

[Jean]

Look through various build threads on bfc to get an idea. It's going to cost even more money trying to get 250whp out of N/A m30 ;)

[iXguido]

250whp = S52 with common bolt on mods / cams / tune will get you there. b35 will require more work and won't be very streetable.

If this is true, and I believe it is, then why is everyone saying 250whp/300bhp is gonna cost $$$ n/a in a us s52? Raise the compression, bigger injectors, some head work, and full headers should get 300bhp?

[Danny]

Do you ever read your own posts?

Thank you.

Christ.

[Jean]

From what I heard. You can make a s5x much faster than a m30, unless you turbo it.

Do you ever read your own posts?

[Jean]

250whp = S52 with common bolt on mods / cams / tune will get you there. b35 will require more work and won't be very streetable.

[619E30]

From what I heard. You can make a s5x much faster than a m30, unless you turbo it.