Cams for s52

[UpstateMike]

Great question. I was wondering the same thing.

[jink0619]

Hmmm this thread is very interesting

[MR 325]

If I sent you my s52 cams to get reground, what else do I need to support that in my valvetrain? Limit vanos? upgraded valvesprings?

I'll tell you that I personally ran these cams with an otherwise stock head/engine in my old S50 E30. That being said the final decision is up to you. I took a look at the Bimmerworld site and I didn't see it recommend any additional mods to accompany the Sunbelt Stage 2 cams. If you want to play it safe give them a call and see what they say...

[UpstateMike]

Can you post a few good pix of some cams that you have done

[MR 325]

Can you post a few good pix of some cams that you have done

Don't think I've ever taken any.

[craz azn]

I'll tell you that I personally ran these cams with an otherwise stock head/engine in my old S50 E30. That being said the final decision is up to you. I took a look at the Bimmerworld site and I didn't see it recommend any additional mods to accompany the Sunbelt Stage 2 cams. If you want to play it safe give them a call and see what they say...

Hi Matt,

I sent you a PM a few months ago, but I never followed up as I wanted to do some research on regrinds.

If the cams are not welded up, I am guessing some material is removed from the base circle to get the cams to those aggressive specs. Is there a shim needed to make up the difference of material removed?

You mention they don't need any additional items valvetrain-wise. Did you ever dyno your S50 before and after?

What is turnaround time for these? Thanks!

[MR 325]

Hi Matt,

I sent you a PM a few months ago, but I never followed up as I wanted to do some research on regrinds.

If the cams are not welded up, I am guessing some material is removed from the base circle to get the cams to those aggressive specs. Is there a shim needed to make up the difference of material removed?

You mention they don't need any additional items valvetrain-wise. Did you ever dyno your S50 before and after?

What is turnaround time for these? Thanks!

I don't have enough knowledge on the 24v engine/head builds to answer your questions 100%. You're right though some of the base circle is removed which is why we need to start with the S50/S52 cams to get the specs we want and not the M50/M52. I'm not going to say they don't NEED any additional upgrades to be run but I am saying I have personally done it (along with other locals I know) without an issue.

I don't have dyno numbers on them unfortunately. Once we have your core cams here it will take up to a week to have them reground and then will be shipped back to you via UPS.

[craz azn]

Sent you a PM Matt. LMK when you can. Thanks!

[dsobering47]

Since my car is a track/weekend beater, I'll wait for dyno proof of actual gains and see how the cams hold up to a few thousand miles of abuse before my purchase. Not knocking your work, just skeptical regarding overall head modifications required to run a more aggressive cam.

[Fernflex]

Have you seen the VAC 276/270 cams, very tempting.

[UpstateMike]

I need an economical choice. I'm not going to spend 900$ on a set of cams. Can't justify power gains. IMO

[hidden_edirty_power]

They are not welded and they are not scary. I ran them in my old S50 E30.

The company who does our cams has been doing them for almost 40 years.

this is very interesting. whats the name of the company that you use?

[Mlarsen]

Good to know, You'll probably be getting a pm from me here real soon about a regrind.

[Wanganstyle]

If considering cams for s52; consider a more powerful complete package solution; s54b32.

Even those with endless funds to throw at a s52 enjoy a s54 more.

Stock s52 cams are just fine; the engine needs more than just a set of cams to make significantly more power.


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[golde30]

Yeah like a blower.