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caps and rotors... (archive)

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Posted by C///MR on January 25, 2002 at 19:19:27:

In Reply to: So, about these Volvo caps and rotors... posted by Jon on January 25, 2002 at 17:18:47:

Jon,
The Volvo rotor you show in the pic will not work. The pic of the BMW M3 rotor is correct. It bolts to a triagle shape piece that is on the end of the cam. The Volvo one looks like a slip on style. There are three types of caps & rotors out there for our M's. Beru, Bosch, and EVO (bosch I guess) The Beru are very simular to the standard bosch (a bit cheaper and rumored more durable. Bimmerworld shipped me the Beru set. There is also the EVO set which has a different design to the center contact. The cap & rotor set run around $150
HTH, Chris


It appears that all the 740s use the same caps and rotors, whether they are 8V or 16V, Turbo or not.

They look like this:

Now, that cap looks very familiar but the rotor looks a little different. Here's a picture of what they say an M3 rotor should look like. This also matches the ETK diagram:

So, I recall people talking about spring-loaded this, and gapped that. What I want to know is: are these rotors compatible? It looks like they mount in completely different ways. If not, I cannot, for the life of me, find any Volvo rotors that look remotely similar to the BMW one above.

I do notice that they always list another PN for M3 rotors but nobody has a picture of that one.

So, can anyone straighten this out for me?

Thanks,
Jon





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