XK / XKR ( X150 ) 2006 - 2014

Brake upgrade for 2009 XK

 
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Old 05-11-2019, 05:04 PM
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Default Brake upgrade for 2009 XK

Serious question... the brakes on my XK feel a it spongy. There is plenty of pads left and are factory Jaguar. They are also a dust tornado! lol. Alcon brakes are impossible to find, been looking. Any other options that are avail? Thx
 
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Old 05-11-2019, 06:24 PM
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Are you sure you donít just have an air bubble in a line? Spongy is not a term Iíd use for my XK brakes. Maybe just blead the lines.
 
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Old 05-11-2019, 07:19 PM
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I donít have any reason to suspect an air bubble since service history is at dealer.
 
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Old 05-11-2019, 08:23 PM
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Over time water also gets into the lines affecting the braking system, as kj said perhaps it's time to bleed the system
 

Last edited by steve_k_xk; 05-11-2019 at 10:33 PM.
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Old 05-11-2019, 08:55 PM
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Sponginess is going to be part of the hydraulics or inconsistent power assist.

When was the last time brake fluid was changed?
 
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Old 05-11-2019, 10:02 PM
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Originally Posted by Tervuren View Post
Sponginess is going to be part of the hydraulics or inconsistent power assist.

When was the last time brake fluid was changed?
As far as I know, never
 
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Old 05-12-2019, 12:47 PM
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Change it and bleed thoroughly.

If still spongy, check none of the flexible hoses need replacing.
 

Last edited by JagV8; 05-12-2019 at 12:50 PM.
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Old 05-12-2019, 01:28 PM
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Originally Posted by badicedog View Post
... Alcon brakes are impossible to find, been looking. Any other options that are avail? Thx
You need more than just rotors and calipers to retrofit the Alcon Performance Brake system to your XK. You'll also need brackets and parking brake parts. It can (and, as I recall, has) been done but it's very expensive, particularly if you have to pay for labor. Maybe for an XKR that's tracked, but an Alcon conversion doesn't make sense for an XK.
 
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Old 05-12-2019, 06:56 PM
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Originally Posted by JagV8 View Post
Change it and bleed thoroughly.

If still spongy, check none of the flexible hoses need replacing.
Will do a brake fluid exchange/flush and bleed the brakes. Thanks
 
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Old 05-13-2019, 08:23 AM
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It also shouldn't be horribly expensive to do the //R upgrade from salvaged parts. I'd buy the rotors and pads new. The rest is bolt on parts from the S type, XK and XJ donors.
 
 
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