XJ8 Brake Upgrade
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XJ8 Brake Upgrade - 6/27/2008 11:26:00 AM
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XJ856Sing
Posts: 9
Joined: 4/24/2008
Status: offline
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Warmest Greetings to fellow XJ8 owners! I have a ''04 XJ8 LWB and would like to upgrade the brakes to those similar on the XJR. I think their OEM Brembo. Could anyone please tell me where in the USA can get a set of these brakes (either new or pre-owned) and how much would it cost me? Thank You!
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RE: XJ8 Brake Upgrade - 6/27/2008 3:35:43 PM
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veffremov
Posts: 68
Joined: 5/7/2008
Status: offline
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Do you want to upgrade only the rotors/pads or the callipers as well?
For the rotos and pads just google "xj8 brembo rotors" and you will find lots of places that sell them.
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RE: XJ8 Brake Upgrade - 6/27/2008 7:02:19 PM
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bmw745ion19s
Posts: 430
Joined: 7/31/2007
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from you mentioning new or pre owned i take it you want a complete set of calipers, rotors and pads. i can tell you just for the rotors and pads you are looking at $1500+ without the calipers which could easily double that.
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RE: XJ8 Brake Upgrade - 6/30/2008 5:21:55 AM
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wdonovan
Posts: 40
Joined: 5/12/2008
From: Bayville, NJ usa
Status: offline
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Doesn''t the ''R'' have larger wheels? Better check if the calipers & rotors fit under yours.
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RE: XJ8 Brake Upgrade - 6/30/2008 9:12:15 AM
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XJ856Sing
Posts: 9
Joined: 4/24/2008
Status: offline
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Thanks for all your feedback and suggestions. Perhaps I''ll just settle the brake upgrades by changing the brake lines to steel braided cables and the rotors to cross-drilled and vented + ceramic pads. There''s plenty of these on ebay (mostly made in the USA) and they''re quite cheap compared to the original rotors and pads sold by the local Jaguar dealer in Singapore. Has anyone tried these steel braided cables, rotors/ceramic pads on their XJs? Would really love some feedback. Thanks!
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RE: XJ8 Brake Upgrade - 6/30/2008 11:44:27 AM
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mosesbotbol
Posts: 28
Joined: 5/20/2008
Status: offline
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I am not sure that is going to yield an "upgrade" in the end. Why the change from just keeping it stock?
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RE: XJ8 Brake Upgrade - 7/1/2008 8:07:08 AM
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XJ856Sing
Posts: 9
Joined: 4/24/2008
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I find the stock brakes on the XJ8 rather "spongy," hence my intention to upgrade for "more bite." I did a similar upgrade (i.e. rotors, pads and steel braided cables, but not the calipers) on my Mazda RX8 which had 280 bhp and it felt great. The car slowed down almost immediately upon hitting the brake pedal, but without any spongy feeling and stopping distance was also reduced by about 20%.
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RE: XJ8 Brake Upgrade - 7/1/2008 10:28:09 AM
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oldmots
Posts: 68
Joined: 6/30/2008
Status: offline
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As was mentioned, going to drilled rotors actually reduces the surface area of the rotor, technically reducing braking force. Some of the folks using this type of stuff are doing it for looks, not performance. In order to make measurable use of extra-cooled rotors, you need to use racing pads, which are not nice to live with, not working well until molten hot and then squealing in normal use, dusting heavily and lasting 5,000 miles and so on. Also, braided lines are not the greatest for street cars, they can wear internally and you cannot see it. Braided lines are made for racing cars that have suspension parts and exhausts that abrade and burn stock brake lines. They are made to be changed often, not sit there for years. I used to race and we changed them after about every three or four races. You are getting ready to make yourself miserable and spend money doing it. I suggest you get some high performance ceramic pads (my favorite are Akebono as they do not noticeably dust) made for street cars and bleed your brakes carefully with good DOT 4 fluid, they will be fine unless you are hitting the track. Then you will need the things you mentioned. The brakes on my XJ8 are not spongy at all and have plenty of stopping power for street use, being able to invoke the ABS anytime I want. The best thing you can do in this area of street performance is to get really ,really good tires, they are more important and more overlooked than brakes in the scheme of things.
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RE: XJ8 Brake Upgrade - 7/2/2008 11:58:20 AM
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2004XJ8
Posts: 28
Joined: 4/8/2008
Status: offline
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I spoke to the engineers at brembo and were told the do not have a kit for 04 xj8. they said that some people have used the 03 kits and that they might work. they quoted me $6300 for a complete front and rear 03 kit. Not worth the money to me!
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RE: XJ8 Brake Upgrade - 7/2/2008 12:57:54 PM
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h20boy
Posts: 1014
Joined: 3/29/2007
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+1 - I agree with oldmots above
A fresh bleed and new ceramics may remove the ''sponge'' feel that you have mentioned. Someone said that the Jag rotors are a softer metal too, so if you do choose to swap out rotors, go wtih an aftermarket EBC, Brembo .. solid rotors for even more responsiveness. I think you''ll be suprised and quite happy with the results without changing out calipers too.
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