S52 Cams in an M52 worth it?

[Drew325is]

I just got some S52 cams installed into my M52B28 running M50 intake and MSEFI. Very happy with the result! These are surprisingly different cams...I'm having to make significant differences to the fuel table on the MSEFI...on the tune for the stock cams it's running very rich at around 1500-2500rpm (like 10:1 AFR)...it's then running lean from about 3500 up. I'm slowing getting the tune sorted for the cams...but so far it feels like a very noticeable gain in power. Will eventually get some dyno time...will post plots. Biggest downside is my PID setings for the idle control are now up the shit - so have to spend some time on that too.

I get the feeling that it's really helping the intake and extractors all work very nicely together.

[benjy]

Would US spec S50 or S52 cams fit a Euro M50 vanos engine?
I'm currently looking at building an iron block (M50) 2.8 vanos lump and I'm looking for information/ideas etc.
Cheers, Ben
(maybe I should start my own thread on this???)

[matt]

Yes. :mrgreen:

M52, S52 cams, 84x84, NA. It was a mildly built motor, can't be any more specific than that.

Contact me privately if you'd like a quote. matt@racersmarket.net

[madjurgen]

Actually, the last 2.8 we built made about 20whp more than that...

Anything more than S52 cams, boltons and 93oct tuning?

[matt]

Ahh, ok. I saw that it was from TX so I figured it might have been yours.

Actually, the last 2.8 we built made about 20whp more than that...

[madjurgen]

Sorry to have misled, that is not my motor.

From here:

http://forums.bimmerforums.com/forum/showthread.php?t=350227

Another 225rwhp here:

http://forums.bimmerforums.com/forum/showthread.php?t=642654&highlight=m52+dyno

[mongule]

Man I can't wait till you guys do OBD2 tuning :)

[318isbmw]

Pretty sure those dyno graphs just put all of the non believers in that it has to be an s52 or boost to be worth it to shame. Damn good numbers madjurgen

[matt]

M52 with S52 cams, I superimposed a stock M20 graph on there.

Is that with our chip? That's damn good!

[Mot]

wow thats a strong m52, you put down over 40whp more then me.. although I don't have s52 cams yet.

Mod list?

[madjurgen]

M52 with S52 cams, I superimposed a stock M20 graph on there.

[ColdAccord]

my plan is to s52 the e30 over winter (looking for a wrecked e36 m3 currently) and doing cams, then putting the s52 cams in my m52 dd

[SpecM]

personally i think anything over 200hp to the ground is much more than most people can handle.

this is true, we drive small cars!

[smonkbmw]

as the engine starts making a great deal more power after 3500RPM.

mine did this also. found out it was the software i was using, changed chips and it toned it down a bit, but still it had a dare i say it "VTEC" feeling to it. flame suit on!

Well thats disheartening. :sad:

dont even trip, itll be fast. some people just dont understand what fast is. they dont realize how quick you can go from being comfortable to being out of control in your car. personally i think anything over 200hp to the ground is much more than most people can handle.

[318isbmw]

Good friend of mine, in his e36, with these parts pulled 202whp a few years ago. For me that'd be worth it...
M52 2.8l Vanos OBD1
Active Autowerks Tuned Software
Ported and Polished Cylinder Head
S52 M3 Cams
M50 Manifold
Dinan Big Bore Thottlebody
3.5” Silicone Elbow
3.5” Tuned HFM
Cosmos 3.5” Intake System w/K&N
UUC Under Drive Pulley's
Fan Delete Mod
Cat-Delete w/Custom Mid-section
Stromung Exhaust System
Bav. Auto Performance Coilpacks

http://nwbmwclub.com/bmws/images/jrhaile/dyno0001.jpg