Single Piston vrs 2 piston calipers
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Single Piston vrs 2 piston calipers
I have single piston front calipers on my '91 NA. I assume the 2 piston calipers are a better design and probably bolt-on to the existing spindle. Does anyone know if they require a larger rotor and/or different master cylinder?
Thanks!
Thanks!
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S5 cars with single piston calipers use the same rotors hubs etc as single piston in the front. In the front all you need to change is the caliper, in the back to go to vented rotors you need the rotor bracket and caliper.
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I have 5-lug wheels w/ single piston calipers. The brakes go away quickly at open track events, so I am looking for a better system.
thanks slo, I will change my front calipers. The rears are allready vented.
thanks slo, I will change my front calipers. The rears are allready vented.
Last edited by santacruzx; 09-13-06 at 07:08 PM.
#7
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I actually just did that swap. The 4 pot calipers bolt right up to the same holes, and you can re-use the single piston caliper brake lines.
I doubt that changing the calipers will help with fade. Better ways of preventing it are to use higher temp brake fluid, full race pads, and add some ducting. If it's not competetive racing you can just be a little more gentle on them too.
The advantages are bling, and caliper stiffness for better pedal feel.
I doubt that changing the calipers will help with fade. Better ways of preventing it are to use higher temp brake fluid, full race pads, and add some ducting. If it's not competetive racing you can just be a little more gentle on them too.
The advantages are bling, and caliper stiffness for better pedal feel.
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Which models have the 4 piston calis and where can I find a pic of one. Because I thought both of my 7's had them. I have a 91 n/a and a 90 GXL, do either of these have them. Thanks
Last edited by RN's X-7; 09-13-06 at 08:19 PM.
#9
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It's incredibly easy to tell just by looking...
To keep it simple, the 4-piston calipers are big and say MAZDA on them (plus they look like they have four pistons in side them... you can tell from the shape, with two circle shapes sort of molded together on each side).
The single piston brakes are small and only have one big circle shape, indicating the single piston.
To keep it simple, the 4-piston calipers are big and say MAZDA on them (plus they look like they have four pistons in side them... you can tell from the shape, with two circle shapes sort of molded together on each side).
The single piston brakes are small and only have one big circle shape, indicating the single piston.
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I really don't think it makes much difference what lines you use, as long as they're in good condition. If you've already got new 1 piston lines, then use those, if all you've got is old stock lines, then get some new 4 pot SS lines, or new stock 4 pot lines. I had just bought 1 pot SS lines when I decided to go 4 pot, so I used them, and it's fine, no leaks, no tension, no problem.
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Originally Posted by Black91n/a
I actually just did that swap. The 4 pot calipers bolt right up to the same holes, and you can re-use the single piston caliper brake lines.
I doubt that changing the calipers will help with fade. Better ways of preventing it are to use higher temp brake fluid, full race pads, and add some ducting. If it's not competetive racing you can just be a little more gentle on them too.
The advantages are bling, and caliper stiffness for better pedal feel.
I doubt that changing the calipers will help with fade. Better ways of preventing it are to use higher temp brake fluid, full race pads, and add some ducting. If it's not competetive racing you can just be a little more gentle on them too.
The advantages are bling, and caliper stiffness for better pedal feel.
Anyone know a good source for rebuilts w/o cores?