Cam Identificaton

[shanon]

Howdy all,

Curious as to the cam in my 2800s original block with a newer head.
Some PO made some upgrades throughout the car and I'm trying to determine if they did a different cam to go w/ the down-draft Webers.

Here's the cam #: 125005 – BMW

any leads on how/where to go to ID it would be great.

thx
--shanon

 

[velocewest]

As far as I know, there's no markings on a stock BMW cam that will tell you what it is. This has been discussed on most boards, and in the end most people end up digging out the dial indicator and measuring the lobes to figure out what they're got.

 

[shanon]

thanks tony,

yep, sounds right, had a chat with the 'wizard' in La Jolla and he said that number was just a BMW cast number. Likely a 270 if its pre-3.0 model, or a 260 if it came out of a 3.0.

my guess its a 260 since a '73 head, unless the PO was wise and kept the original cam (euro = 270....?)

-shanon

 

[Gosch]

Hello all,
For a short time was discussied on German Forum about the different Style of the cylinderheads. Their come also the Thema about the different Cam. Here is the Link ( http://f25.parsimony.net/forum63394/messages/7901.htm ) Please read the compleate Threat, it is very
complicatet ( excuse my bad english, it´very funny), but about the Cam I can confirm their is Hit a Number of the End of the Cam at two example. " I have an 75/2,5L orginal Engine with a Cam market Number "1" and I have a 83/3,5L Engine with a Cam market in 3 Colors " Blue/Red/Blue. Please controlled your own Cam to give a Light in the "Dark Zone"
Best Regards Gosch alias "Harald.G"

 

[Gosch]

Gosch alias " Harald G "
1983 635 CSi 8173202
1968 2800 CS 2 200 21
1972 3.0 CSi 22 627 22
1975 3.0CS/A 43 206 65
1975 2500 A 24 523 32

only Live the Last Two

 

[vraned]

Gosch, I feel compelled to contribute. Below is a CSR exchange from 2000, in which Cameron Holliday schools me on M30 camshafts:


From: Cameron Holliday <***********>
Subject: Re: cam identification (tech request)

2500, number 1, 260 degree
2800, number 2, 264 degree
2800 and
3000, number 3, 272 degree

Don't waste your time with anything but the number 3.


Regards,


Cam

david vrane wrote:

> Could anyone please provide a brief table for big six camshafts that
> correlates their duration angle with the number stamped on the
> end of the shaft? Comments on desirability would also be greatly
> appreciated.
>
> Thanks,
> David Vrane
> '74 (?)CS #4315070