<VV> 4-Piston Calipers - Non-Corvair

[Harry Yarnell]

I remember the four piston calipers from the 60s-70s, and what a pain in the 
ass they were. You had 4 times the chance of siezing a piston or leakage.
As for replacing pads, the newer GM's have only one bolt to undo on the 
caliper, and the caliper pivots on the second. Slip out the old pads, 
depress the piston, install new pads, and you're done.

Harry Yarnell
Perryman Garage and Orphanage
hyarnell1 at earthlink.net
----- Original Message ----- 
From: <JVHRoberts at aol.com>
To: <TheFreshPrinceofCorvair at comcast.net>; <virtualvairs at corvair.org>
Sent: Friday, June 30, 2006 11:30 AM
Subject: Re: <VV> 4-Piston Calipers - Non-Corvair


>
> For racing, lots.
> A 4 piston caliper is fixed, no sliding mounts. This makes sure everything
> stays square and doesn't move in unexpected ways.
> The body of a 4 piston caliper is FAR more rigid than the 'C' clamp of a
> single piston caliper, giving a FAR more firm pedal, and allowing the use 
> of a
> smaller bore M/C for better mechanical advantage.
> And pad changes are a total breeze compared to most single piston 
> calipers.
> Pull a pair of pins, leaving the caliper in place, pry the pistons back, 
> slip
> in  the new pads, stick the pins back in. On my 300ZXTT, a pad change 
> takes 5
> minutes per wheel, including jacking the car up and taking the wheel off!
> Downside? They cost more. That's about it.
>
> John
>
>
> In a message dated 6/30/2006 11:19:46 AM Eastern Standard Time,
> TheFreshPrinceofCorvair at comcast.net writes:
>
> Can  someone tell me what the advantage[s] is of a 4-piston brake caliper
> over a  1-piston caliper?
>
> Will Smith
> "The Fresh Prince of  Corvair"
> WANTED: 66 Monza vert, 110, pg, white top, no rust, great  condition, 
> driver
> for Parade Duty and taking kids for a ride in something  they've never 
> seen
> plus playing "Find the Motor".
>
>
>
> _______________________________________________
> This message was sent by the VirtualVairs mailing list, all copyrights are 
> the property
> of the writer, please attribute properly. For help, 
> mailto:vv-help at corvair.org
> This list sponsored by the Corvair Society of America, 
> http://www.corvair.org/
> Post messages to: VirtualVairs at corvair.org
> Change your options: 
> http://www.vv.corvair.org/mailman/options/virtualvairs
> _______________________________________________
>