CSL Cam Profiles

[jupe777]

Having my top end rebuilt and I took the opportunity to take the new inlet camshaft and the old one into work and have my inspection department measure the cam profiles. I then converted to a CAD drawing so I can measure the wear. But I now have the exact profile of a new inlet cam. I presume the outlet is the same but mirror image. I will do the same on the outlet when it arrives to be sure.

This info could become useful if the supply of new cams ever dries up completely and we have to re-profile. If any member would a like the profile in .dxf format drop me a pm.

[0-60Motorsports]

Very cool. Thanks for posting this up.

[NZ_M3]

Super for doing this for the community :thumbs:

PM coming your way.

[jupe777]

Super for doing this for the community :thumbs:

PM coming your way.

Thanks, email sent :smt023

[terraphantm]

Wow this is awesome, thanks! According to BMW the exhaust cam on the CSL is a little bit shorter on duration for whatever it's worth

Sending you a PM

[jupe777]

Wow this is awesome, thanks! According to BMW the exhaust cam on the CSL is a little bit shorter on duration for whatever it's worth

Sending you a PM

I measured the used exhaust profile and yes your right, there's 1mm difference.

My work email was down yesterday so no emails left my outbox, I will send from home over the weekend.

Cheers chaps

[pinkpanther008]

Got the Cam profile scans, great thanks for the CSLR community support, much appreciated:beer:

I measured the used exhaust profile and yes your right, there's 1mm difference.

My work email was down yesterday so no emails left my outbox, I will send from home over the weekend.

Cheers chaps

[terraphantm]

Hi Jupe777

I was taking a closer look at the drawing, and it looks like the profile fits that of an exhaust cam rather than an intake cam.

Take a look at the RealOEM picture (which does match reality in this case, at least for non-CSLs)

http://i.imgur.com/8mxWhwMl.png

Based on where the concave section is, your intake cam profile looks more like an exhaust cam to me

Edit: Never mind, I see you had the cam oriented differently

Here's a quick comparison to the stock S54 intake cam (Apparently 260º compared to the CSL's 268º). The ramp is clearly steeper

http://i.imgur.com/lAeq52y.png

[NZ_M3]

Questions ... what are the number markings on these cams to identify it as CSL?? It seems to me that they have identical markings/numbers to stock M3 cams correct??

[GregorFuk]

So armed with this info does this me the CSL community can have it's own cams ground up from the likes of catcams etc?

[Mike R]

Schrick already does CSL cam profiles, as it is a common upgrade for normal M3 owners :). However, BMW won't fit non-genuine cams (as I am finding out to my cost, as I have been without the car since the end of July, due to BMW GMbH having rejected two batches of replacement cams from their supplier so far, and they won't supply / fit anything else (and mine suffering the usual CSL cam wear issues)).

[alexk]

Mike is your car being repaired because of the cam issue ?

[Mike R]

Mike is your car being repaired because of the cam issue ?

Yes, it's under the BMW Mondial warranty scheme.

It's been sitting at the dealership since July this year (all stripped down waiting for parts), first waiting for head bolts (as BMW GMbH were showing the cams in stock) and then when the release date for the headbolts came (6 September), BMW GMbh informed Sycamores (the UK BMW dealer doing the warranty work) that all the inlet cams in that batch had failed to pass their quality control procedures and had been rejected (I have not been informed on what basis they were rejected). I was then advised that another batch of three were due in shortly, these arrived at BMW GMbH a few weeks ago, but were also subsequently rejected :(. So I am now waiting for a third batch and hope that these are okay, but have had no date advised for their release to BMW GMbH yet (and no guarantee that they will even pass the inspection)......

The wear issue is a common problem with them and BMW are obviously trying to prevent a re-occurrence by carrying out more stringent quality checks, but I just want my car back :(.

[alexk]

Very sorry to hear this Mike. I hope your car is fixed soon.

I don't have such problems because there is no warranty option here and you just bite the bullet and pay on your own :smt118

Back to the subject.
Are the cams wearing out because of lubrication issues ?
The same problem exists in the M3 E30 and the S14 engine.
Usually happens when the oil from the the cylinder head is not optimal (there is an o-ring or something that creates the problem - I don't remember the detail of this).

[NZ_M3]

The cams are x rayed before being released.

Strange you are waiting on inlet cams because I just picked mine up this week and was told the three exhaust cams they had in stock failed x ray tests.

Can someone please confirm the markings on the csl cams?? I have a feeling the markings on them are identical in every respect to the stock M3 cams???

[GregorFuk]

Schrick already does CSL cam profiles, as it is a common upgrade for normal M3 owners :). However, BMW won't fit non-genuine cams (as I am finding out to my cost, as I have been without the car since the end of July, due to BMW GMbH having rejected two batches of replacement cams from their supplier so far, and they won't supply / fit anything else (and mine suffering the usual CSL cam wear issues)).

Can you not just buy the Schrick cams and slide them under the counter at BMW along with a box of Jaffa Cakes? Jaffa Cakes can work wonders you know.

[Mike R]

The cams are x rayed before being released.

Strange you are waiting on inlet cams because I just picked mine up this week and was told the three exhaust cams they had in stock failed x ray tests.

Can someone please confirm the markings on the csl cams?? I have a feeling the markings on them are identical in every respect to the stock M3 cams???

It's quite possible that it was the exhaust cams, I was just so annoyed at yet another delay that I may have misheard which he said was in and which he said they were waiting on.

At least I now know what they failed on (I had thought it was some type of hardness testing they were carrying out to see if they were going to suffer the same scoring). It's even more worrying that the people making them are sending out cams with actual material flaws....:banghead:

As you seem to be better connected, have you had any indication when the next batch of exhaust cams are to arrive :)?

[Mike R]

Very sorry to hear this Mike. I hope your car is fixed soon.

I don't have such problems because there is no warranty option here and you just bite the bullet and pay on your own :smt118

Back to the subject.
Are the cams wearing out because of lubrication issues ?
The same problem exists in the M3 E30 and the S14 engine.
Usually happens when the oil from the the cylinder head is not optimal (there is an o-ring or something that creates the problem - I don't remember the detail of this).

The scoring on them looks like an oil supply issue would be where you would point the finger, but my engine was fitted with a brand new oil pump 10k ago (and I religiously run it at 1.1 litres on track) and as far as I am aware the standard cams in the S54 don't suffer the same issues? Although Tom may be able to confirm this better :)?

[Mike R]

Can you not just buy the Schrick cams and slide them under the counter at BMW along with a box of Jaffa Cakes? Jaffa Cakes can work wonders you know.

Sycamore won't fit anything non-genuine - they won't even replace the brake fluid with Castrol SRF (despite Castrol being their previous fluid supplier), as the SRF is not a fluid they recognise as being fit for purpose as it isn't down on their list :gayfight:, so sadly I don't think even chocolate Hobnobs would work for the cams :bigcry:...

[terraphantm]

Schrick already does CSL cam profiles, as it is a common upgrade for normal M3 owners :). However, BMW won't fit non-genuine cams (as I am finding out to my cost, as I have been without the car since the end of July, due to BMW GMbH having rejected two batches of replacement cams from their supplier so far, and they won't supply / fit anything else (and mine suffering the usual CSL cam wear issues)).

Schrick does not sell CSL-equivalent cams. The CSL has 268º intake and 264º exhaust cams with the same lift as the stock M3 cams; Schrick doesn't sell anything like that.