Cams for s52

[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]

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]

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

Don't think I've ever taken any.

[UpstateMike]

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

[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...

[jink0619]

Hmmm this thread is very interesting

[UpstateMike]

Great question. I was wondering the same thing.

[dsobering47]

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?

[jwiles]

We have not had them done but they absolutely can be.

O why is there no thumbs up i swear your respone was hariolious. he knew what you ment. he just wanted to be an ass hole, which their should also be a donkey smiley face. but for the time being. :woowoo: :finger: :up:

[UpstateMike]

I was thinking the same thing. I have a extra set of s52 cams. Might have to give this a shot. I'll look for tubes to ship in.

PVC pipe with caps. Lightweight and strong.

[MR 325]

Didn't know M50s have been around for 40 years

I would love to get sunbelt stage 2. Can you regrind a set of cams from a s50b32 euro?

We have not had them done but they absolutely can be.

[golde30]

Didn't know M50s have been around for 40 years

:loco:

[Fernflex]

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.

I would love to get sunbelt stage 2. Can you regrind a set of cams from a s50b32 euro?

[surebimmer]

you got my attention, this sounds like a good solution for a lil more power out of my s52...

I was thinking the same thing. I have a extra set of s52 cams. Might have to give this a shot. I'll look for tubes to ship in.

[10Toes]

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.

Didn't know M50s have been around for 40 years