They were made by DBA in Australia?
Good quality castings AFAK.
Thomas
Alex Avery wrote:
> I installed a set of slotted/drilled rotors on my father's '69 2000 last
> year and they work fine. I'm not sure about increased performance, but
> they weren't that expensive and despite some hard braking, they haven't
> cracked yet. They were made by an Australian company that specializes in
> cross drilling and slotting rotors, and were purchased through one of the
> roadster vendors. I wonder if they would care to join in this discussion?
> Pros, cons?
>
> Alex
>
> At 05:14 PM 2/9/01 +0100, Thomas the Swede wrote:
> >Drilling stock rotor castings is a waste of time. They crack
> >because most cast iron material used isn't suitable for drilling.
> >The more $$$ drilled rotors are cast in a different material
> >or they usually are. Drilled rotors make's a noise similar to
> >a big truck when braking. Slotted rotors clean the pads but
> >makes less noise than drilled. The slots dont cool the rotors.
> >
> >Thomas
> >
> >datsunmike wrote:
> >
> >> Rob,
> >>
> >> In Grassroots there was an article re: drilled/slotted rotors. They said it
> >> is a waste of $$$$ and from what I gather from other sources the drilled
> >> rotors, except the $$$$ ones, are, for the most part junk - Radial stress
> >> cracks and broken rotors. Slotted is better but doesn't improve braking.
>As
> >> stated in the article "gassing" is no longer a problem with the pads made
> >> today.
> >>
> >> Ventilated rotors are better.
> >>
> >> Mike
> >>
> >> ----- Original Message -----
> >> From: "R Haug" <haugchiro@moscow.com>
> >> To: <datsun-roadsters@autox.team.net>
> >> Sent: Friday, February 09, 2001 8:50 AM
> >> Subject: drilled and slotted rotors
> >>
> >> > List,
> >> > I am considering replacing my standard rotors with the drilled and
> >> > slotted rotors for my 67.5.
> >> > Has anyone used these on the street?
> >> > If so, is there much difference in braking with these as compared to to
> >> > standard rotors?
> >> > Is there any increased or decreased noise?
> >> > I would think there may be an improvement in fade resistance.
> >> > Maybe a slight decrease in unsprung weight.
> >> > Anything else?
> >> > Bob
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