I've been running slotted and cross-drilled rotors on my A4 for 5 years. I've never had one crack, but I don't autocross. For my latest set I looked for drilled, but not slotted, rotors because my last set buffeted at high-speed braking, which feels shaky and unstable, and I read that was because of the slots.
having a vac at idle is NORMAL... its exactly how it was designed to be... vacuum is drawn on the head and block from the manifold via the PCV system... you test it by taking the pcv off and trying to force air through the valve. if it goes through, its busted... if it doesnt, then your fine.
@tbomb, that's old school thinking. You can easily change the gapping, just don't be retarded and slam a coin or something in there and start bashing away. lol
we did an AutoX last month and i even had the better times. they arent all they are cracked up to be.
its pretty normal for our engines, that's one of the reasons why we change our oil every 3-4k miles. if it ever becomes much more than usual, you could be looking at a leaky seal in your HPFP or the like.
Re: (rhouse181) Quote, originally posted by rhouse181 \u00bb that bearing shattered... it didn't wear due to poor or inadequate lubrication. looks more like manufacturing defect, the outer layer on the bearing shell delaminated and rolled around for awhile. sorry to say this, but that crank is toast... i would start searching for a good used one out of a wrecked motor. this.
I've had EBC dimpled/slotted rotors with red stuff pads and they work pretty well. They are kinda noisy during braking but aside from that I haven't had any issues. The red pads are amazingly low on brake dust too
I ran EBC sport rotors (slotted/dimpled) for about 8k before upgrading to DEs. With their greenstuff pads, they stop very well.
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