XK / XKR ( X150 ) 2006 - 2014

Adjustable coilovers installed, finally!

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  #41  
Old 05-26-2020, 08:49 PM
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Your car looks great!
 
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  #42  
Old 05-27-2020, 03:27 AM
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Looks Great! Front end painted or wrapped? Let us know on the time improvement it made over the eibach springs I bought from you.
 
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2008 XKR Convertible, (mods: AlphaJagTuning ECU Tune , 1.5lb pulley, (200cel cats( are now melted), xpipe, Bosch 001 pump, 180 Thermostat.
Drag strip : 7.9sec 1/8mi 90 MPH . 1/4 mile 12.55 at 111.98mph
432rwh Dyno on Mustang Dynometer , Approx 511 crank HP.
2013 XJ 5.0 Supercharged, (stock with Alpha Jag ECU tune), estimated power: 600+ hp, 7.7sec 1.8th mi/95mph
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  #43  
Old 05-27-2020, 08:31 AM
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jahummer always raising the bar... just when I think his car can't look much better he finds a way...
 
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  #44  
Old 06-06-2020, 07:43 AM
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Any chance you can record the sound of the exhaust without the back box? I’m looking to do something like that with my car, but want to make sure there’s no droning at highway speed.
 
  #45  
Old 06-06-2020, 10:32 AM
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I wouldn’t necessarily call it drone, but is pretty loud and can be heard in the cabin as would most any nearly unmuffled exhaust.
 
  #46  
Old 06-06-2020, 07:08 PM
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As my spare tyre has been removed I loomilo to fill the exsiexis space with a sponge/ foam as it's very light and will muffle the sound of my 100cels, I'll see how that goes could be worth considering from your end if too loud in your cabin



​​
 

Last edited by steve_k_xk; 06-06-2020 at 07:14 PM.
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  #47  
Old 06-07-2020, 11:49 AM
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I've stripped nearly everything from the rear interior and can tell you it makes a difference. Also have had the rear seats out and that made the most difference. I was quite surprised by this and have as an experiment considered filling the boot with blankets to see how much impact that would make.

Had another run in the car last night and really impressed with how well the car is handling now. If anyone in Florida is interested in trying it out I am happy to offer.
 
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Old 06-07-2020, 07:52 PM
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Well done Jeremy wish these coilovers were around when I replaced my springs and shocks not that there is anything wrong with my current set up however having the ability to fine tune the vehicle to my exact requirements and also dropping a few lbs in the process would be fantastic
 
  #49  
Old 06-07-2020, 09:40 PM
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I don't know if I've mentioned it before but car weighs in at under 3700 pounds now and still has a bit more room for improvement.
 
  #50  
Old 06-07-2020, 11:42 PM
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Not bad at all that's a good 150lb saving from a portfolio and just 15lbs heavier then the XK

Thinking next stage for you might be some light weight seats , I weighed mine last time they were out and they were 50lb each .
 

Last edited by steve_k_xk; 06-07-2020 at 11:53 PM.
  #51  
Old 06-08-2020, 12:17 AM
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I am ready for seats but I have to sort the SRS system I think first or there will be errors and possible failure of the front bags which I’d like to retain. I may shed the washer system, seatbelts since I have harnesses and lightweight battery. That’s probably about it without making drastic changes.
 
  #52  
Old 06-08-2020, 01:28 AM
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Yes that's obviously a big concern , just went back through the thread and the seats are actually 60lbs that'll be a huge weight saving.

​​​​​​I'd love to swap mine out , sell my eibach susp (replace with coilovers) and fit up some 260° cams .
 
  #53  
Old 06-12-2020, 12:55 PM
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If you can go with a 4 pound lithium battery, lose your backbox and replace with resonators and install coilovers, that's nearly another 100 pounds shed.
 
  #54  
Old 06-12-2020, 05:03 PM
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That's decent saving

Which Resonators are you running instead of your rear box ?

The more are more I look at my seats the want them gone as they simply do not match the rear (front seats have square pattern & the rear have horizontal patter) plus they also look very bulky .

Big weight saving to had with a set of sport seats
 
  #55  
Old 06-12-2020, 05:37 PM
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I've a pair of these fitted https://www.magnaflow.com/products/1...rmance-muffler

They weigh about 5 pounds apiece. Although I'm considering minimizing the exhaust further. By the way there was a large weight difference between the factory cats and the spun ones we have now. If you have any ideas regarding the seats and the SRS system I'd be very interested. I spoke with Cameron and he didn't have any experience. He mentioned the ones Jag optioned for the GT which do NOT have airbags fitted. Of course there's always the resistor trick to the seat harness.
 
  #56  
Old 06-14-2020, 05:26 AM
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Jeremy I'm thinking the resistor trick is our best bet to getting it all sorted as Im still using my rear seats 3-4 days a week I would need the seat to able to fold down and also match the rest of the leather trim (horizontal pattern to match the rear)

In regards to your magnaflow rear mufflers how do they compare (decibals) to the OEM back box
 
  #57  
Old 06-26-2020, 01:49 PM
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Are these the same thing??

https://www.ebay.com/itm/BC-RACING-B...ee1f%7Ciid%3A1

If so it looks like the price has come down a bit.
 
  #58  
Old 06-26-2020, 02:22 PM
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No, those are the BR series, mine are the DS series.
 
  #59  
Old 06-26-2020, 05:36 PM
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Originally Posted by jahummer
No, those are the BR series, mine are the DS series.
ah I knew it was too good to be true. What is the difference... besides $$?
 
  #60  
Old 06-26-2020, 07:57 PM
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Originally Posted by v8moise
ah I knew it was too good to be true. What is the difference... besides $$?
Better dampers for the track with digressive dampers. But if you are not tracking the car, the BR series may be just fine for your use as they will be a little less aggressive.
 
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