Harry, the only vehicle that I've ever had with 4-piston calipers on was
a1968 Impala SS427 coupe and they worked very well. I don't know if
they are really that much better than single piston calipers but they do
cost considerably more to replace.
There are two classes of pedestrians in these days of reckless motor
traffic - the quick and the dead.
~ Lord Dewar 1933 ~
Climbing into a hot car is like buckling on a pistol. It is the great
equalizer. ~ Henry G. Felsen 1964 ~
Yes. Dual-piston calipers will allow a more even distribution of
braking force on the brake pads. I had a 94 Jimmy, now have a 2000
S-10. The S-10 has dual-piston calipers up front and single-piston in
the rear, the Jimmy had single-piston calipers in the front and drums
in the rear. Now, the disc/disc vs. disc/drum may be part of the
equation, but the S-10 has a MUCH better pedal feel, and I think stops
better, despite having larger tires.
On Thu, 2 Dec 2004 20:48:41 -0600, firstname.lastname@example.org (Harry Face)
Well, sorta, not really. Yes and no.
It depends. :)
Seriously... it really depends. In theory, yes.
In theory - one piston on each side is more of an even push than one
piston and sliders.
However, single piston calipers are cheaper and almost as good.
Besides the more even distribution of force to the width of the pad you will
get twice the pressure that would normally be exerted on the rotor. They do
generally stop you with much less peddle effort than single piston units.
That is presuming they are sized correct by the designer.
Even force distribution on both pads. Less likely to have uneven brake pad
wear. As far as stopping distance. Well If the single piston assembly is
working properly than it is comparable to dual piston assembly as long as
the contact area from piston or pistons are the same.
my two cents!
It actually depends on the actual pressure that is behind the piston and the
fact that two pistons will fit where one will and can be large enough to
exhibit more pressure.
The same concept applies to four valve cylinder heads, two valve that are
60% of the single valve's size will fit in it's place. Yielding you 20% more
well I know as a side effect, you can get larger brake pads (more surface
area) the calipers on my monte are interchangeable with the dual piston
calipers found on late model camaro's (with slight modification of the
caliper bracket, the bolt hole has to be 14mm instead of 12mm)
the pads are about twice the surface area, and with a car that weighs just
as much as the camaro, I'm sure theres a benefit in there somewhere.
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