Re: Cross drill = crack rotors?

["Romeo Shayne Pavlic'" <bcpi@arias.net>]

I agree with Tim.  However, Ron's Parts just talked me into a set of Brembo
that are cross drilled.  Swear they are the best things out there.  They
have never seen one crack.  I am still a little hesitant, but at $90 a piece
I figure I will try it.

RSP




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*  Romeo Shayne Pavlic'            *
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*                          U.S.A.  *
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----------
>From: Timothy C Salazar II <tsal2@juno.com>
>To: quattro@audifans.com
>Subject: Re: Cross drill = crack rotors?
>Date: Mon, May 24, 1999, 23:27
>

>Jason,
>
>>From what I remember, if the rotors were cast with the little vent holes
>in them, from the correct metal, it was fine.  But if any `ol rotors are
>drilled, then you COULD have serious problems.  Drilling solid rotors
>PROBABLY creates microscopic fissures that make weak spots.  They also
>wouldn't have the correct metallurgy, and COULD crack.  If they're cast
>that way, their shouldn't be any microscopic fissures and the "grain" of
>the metal should be lined up to take most of the abuse.  But I'm not a
>metallugist, nor am I a cross-drilled rotor fan.  Sure, they're great for
>the track, but for normal Audi driving, (read- "spirited"), I'd go with
>slotted rotors and a good set of metal brake pads and steel brake lines,
>to boot.  Slotted rotors cool quicker than normal solid, vented rotors. 
>And they're more structually sound than drilled rotors, making them more
>feasible for use on the open road.  That's just my opinion, anyway.  Any
>rebuttals, fellow Audians?
>
>Love, Like, or Just Plain Tolerate,
>
>Timothy
>
>`85 4kq
>`82 & `86 CGT (R.I.P.)
>
>
>On Tue, 25 May 1999 01:52:31 EDT PlyBoyDoct@aol.com writes:
>>I got some nice brembo rotors and when installing them, my mech. said 
>>that 
>>they will crack.  "Its not IF they will crack, its WHEN it will 
>>crack?"  This 
>>kinda scared me a bit.  Q-list confirm this?
>>
>>Jason C
>>89 200t10v
>>Redmond WA
>