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Researching S-type brakes/Suspension differences.

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  #21  
Old 09-15-2012, 03:52 PM
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Originally Posted by JEM
Forgive me for poaching on this thread, hopefully someone's still reading it...

I'm in the process of adapting the Jag STR parking brake caliper to fit over a 330x28mm rotor.

I've laid out and milled some 1/2in spacers to fit between the caliper halves, can provide a DXF if anyone wants it.

The problem is that the pad-retention pins and the anti-rattle spring will now be too narrow.

As noted earlier, the Audi R8 uses the same basic caliper design ($$$$$) but with a wider outer half, I'm trying to find out how thick the R8 rotor is.

I'm not aware of any other vehicle that uses this exact caliper design, and the ebrake pads don't seem to cross-reference to any other vehicle.
My research found this type of Brembo Caliper to be used on only 3 production cars: Audi R8, Dodge Viper, and the STR. I have done as you are doing, made 1/2" thick spacers to accommodate my 365 x 28 rotors. This was the only cost effective way for me to use 28mm wide rotors. I believe you can purchase New Brembo E-Brake calipers from Brembo/distributor for around $600. Too much money for a set of E-brakes in my opinion.

I found that pins from the rear Camaro Brembo Calipers work well. Regarding the clip, you'll probably have to fabricate your own.
 
  #22  
Old 09-16-2012, 10:08 AM
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Originally Posted by Tijoe
My research found this type of Brembo Caliper to be used on only 3 production cars: Audi R8, Dodge Viper, and the STR
I believe that's not quite right, I think the Viper caliper is different.

However, based on a little more pad cross-referencing it appears there's two other applications: the Ford GT and the '08-09 Jag XKR w/Alcon brakes.

And, while the Ford GT rear rotor shows up as thicker than the R8...will miracles never cease...the rear rotor on the XKR is listed as 350x28.

So...off to find a Jag parts counter this week unless someone's got access to a real, detailed parts listing.
 
  #23  
Old 09-20-2012, 09:28 PM
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STR Brembo E-brake caliper spaced for 28mm wide Rotor before Paint.
 
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Old 09-20-2012, 09:36 PM
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I'll Try adding attachment again...

STR Brembo E-brake caliper spaced for 28mm wide Rotor before Paint.
 
Attached Thumbnails Researching S-type brakes/Suspension differences.-e-brake.jpg  
  #25  
Old 09-23-2012, 12:59 AM
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Originally Posted by Tijoe
I'll Try adding attachment again...

STR Brembo E-brake caliper spaced for 28mm wide Rotor before Paint.
Looks a lot like mine. I'm debating whether to take a shot at dismantling the calipers to powder coat them.

BTW, the XKR pin/clip kit is Jag PN C2P15990.

$100 each, plus or minus, which is almost twice what I paid for my calipers...and almost twice what Audi gets for a set of R8 pins and springs.
 
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Old 09-25-2012, 07:31 PM
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[QUOTE=JEM;586151
BTW, the XKR pin/clip kit is Jag PN C2P15990.
[/QUOTE]

This is what you get from Jaguar for your Benjamin:



And it fits just fine in the S-type caliper with implants:

 
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Old 09-26-2012, 04:00 AM
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Which of the S-Type (models, year etc) caliper is that?
 
  #28  
Old 09-26-2012, 07:05 AM
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My STR E-brake calipers are off a 2004.

Here it what my e-Brake caliper looks like using $12.00 pins from a 2011 Camaro Rear Brembo caliper. (I still need a pad retaining clip solution, extend original or make my own.

I like that 2 of us are modifying the e-brake caliper at the same time...
 
Attached Thumbnails Researching S-type brakes/Suspension differences.-img_3558.jpg  

Last edited by Tijoe; 09-26-2012 at 07:07 AM. Reason: removed the word "an"
  #29  
Old 09-26-2012, 09:48 AM
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Thanks. Quite a coincidence!
 
  #30  
Old 09-26-2012, 11:35 AM
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Originally Posted by Tijoe
My STR E-brake calipers are off a 2004.
Mine are off an '05 I think.

Originally Posted by Tijoe
I like that 2 of us are modifying the e-brake caliper at the same time...
I think the expression you're looking for is 'misery loves company'
 
  #31  
Old 10-06-2012, 11:23 PM
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I figure I should update and document a couple finding regarding difference between the STR rear hub carrier and the standard S-type Rear hub carriers.
As most STR owners with Brembo calipers know, there is a separate Parking brake caliper. (Images shown above.) In my brake upgrade on my 2000 S-type (not a STR) I figured it would be straight forward/easy to upgrade using a rear STR hub carrier and then use a larger rotor. (365 x 28 or 380 x 28.) I put together 3-D CAD Models and quickly found out that trying to move the parking brake caliper to fit a 365 rotor is virtually impossible without extensively modifying the STR hub carrier. A 365 rotor is only .7" (17.5mm) larger radially, and when I move the parking brake out it hits the bosses on the Hub carrier, and a caliper adapter can't be made to fit.
The Parking brake can be made to work with a 380mm rotor, because you can move the parking caliper out an inch / 25mm. Seems like a good way to go, Right?
If I try to go with a 15" rear rotor, (Same diameter as my Front rotors) Then the Brembo calipers I have available, create too much rear brake bias.

If I go back to 330mm x 28, (stock STR rotors diameter), then I get too much front brake bais with the front Brembos I have and am using.

Quite an interesting challenge. It appears that the STR Brembo/ knuckle set-up was mechanically optimized for 330 rotors in the back with 365 front rotors.

To use a 15"/380 rotor in the rear, I would need to purchase a rear set of calipers that have the right piston area, plus the caliper has to have the ability to fit a 380 rotor. To date I've only found two calipers that will to the job and they are in the $400+ each price range.

It is looking like I will be better off using the stock 2000 S-type rear hub carrier and make an adapter that fits both the rear caliper and parking caliper.
 
  #32  
Old 11-19-2012, 09:03 PM
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Just a teaser regarding the front tires that eventually will be fit to my S-type Conversion. (Left tire, 245X40X17, right tire 305/30/19) The 305s stick out a wee-bit beyond the fender, so flares are in the works.
 
Attached Thumbnails Researching S-type brakes/Suspension differences.-img_3625.jpg  
  #33  
Old 11-20-2012, 08:13 AM
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Wondering why you want so wide fronts. Is it not extra unwanted weight? (& cost)
 
  #34  
Old 11-20-2012, 10:45 AM
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Bling!

Wider = Better (This will open a can of worms I am sure!)

The 305s are matched to work with the 345 rears!

Assuming my suspension modifications balance with the tires, I plan to get better overall handling out of this 4000lb/1400kg “heavy” car!

Planning for the day when the car has closer to 600hp versus the 430hp to 450hp it has now.

What’s another 8 pounds per wheel? The LS3/TR6060 Combo is about 50 lbs lighter than the original AJ-V8 combination, so a few extra pound isn’t going to hurt the F/R balance of the car. But I’ll be adding about 10 lbs more unsprung mass per corner. (This is another big topic for discussion, with lots of information on the Internet debating unsprung mass and effects on rotational inertia when modifying a car.)
 
  #35  
Old 11-20-2012, 11:12 AM
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Originally Posted by Tijoe
Great information. Keep it coming.

One thing that I have noticed is that there are a lot of 1999 to 2002.5 S-type suspension parts listed on E-bay and other online shops. It is a lot harder to find information on 2002.5 and newer suspension parts, (other than the common parts across all years.

Why aren't the 2002.5 and newer part more readily available?

I seldom if ever see any 2003 to 2008 STR suspension parts listed in catalogs or online. (Not enough cars built?)

What is the best way to get/find a list of the heavy duty "Supercharged" parts?

Hi, we have the some problem over here in the U.K with parts for 2002.5 onwards. I also find people don't know there are changes to front suspension, gearbox, cylinder heads and inlet manifold and just list them as 1999-2008.
 
  #36  
Old 11-20-2012, 04:48 PM
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The reason they are not more common is simple math. After the 2003 upgrade the Jaguar S Type and the Lincoln LS no longer shared much if any suspension pieces.

So they are Jaguar parts only.
.
.
.
 
  #37  
Old 11-20-2012, 05:46 PM
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And the reasons re STR is they made so few.
 
  #38  
Old 11-20-2012, 08:34 PM
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Here is the link to the thread regarding S-type Production numbers.

https://www.jaguarforums.com/forum/s...-number-29594/

It is hard for me to believe that less than 1300 STR's were built for all model years. I am glad I purchased one. Now I understand why some STR parts are hard to come by.
 
  #39  
Old 05-11-2013, 10:26 AM
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I figured I'd continue adding to this thread, rather than start a fresh one.
There have been recent threads on adding LSD to the S-types/STRs, threads on wheels, threads on upper and lower control arms, coilovers, and threads on brakes. But not much on the rear suspension.

I am attaching some images of my rear sub-frame and suspension project to show gradual progress on adapting the rear suspension to fit 345/30-19 tires. I am finding that I will end up designing new upper and lower control arms in order to get the suspension geometry I am looking for. Lots of slow methodical work.

Note the Mark VIII 8.8 Differential case. I have my rebuilt 8.8 with 3:55 gears and a Torsen T2-R ready to install once the rear suspension changes are made

Enjoy
 
Attached Thumbnails Researching S-type brakes/Suspension differences.-img_3971.jpg   Researching S-type brakes/Suspension differences.-img_3985.jpg   Researching S-type brakes/Suspension differences.-img_3979.jpg  

Last edited by Tijoe; 05-11-2013 at 11:11 AM. Reason: correct spelling
  #40  
Old 05-12-2013, 06:38 AM
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Tijoe: Be humble and take the praise.... Your threads and work are epic....

"fabricating my own control arms" If any other users said that I'd call "BS"..

This is also a lesson in "doing it right".....

So many people in so many car communities think you can just "slap it on" and be done with it.. Not you, you seem to have quite the handle on what it really takes to modify a car..

That fact that you are doing it to a relatively rare unsupported make and model makes it epic....

Anyone can buy $20,000.00 worth of "kits" and build a Camaro, Mustang, or Challenger... not you...
 


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