XJ ( X351 ) 2009 - 2019

XJ R 575 a different engine?

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Old Jan 14, 2026 | 11:13 AM
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Default XJ R 575 a different engine?

I stumbled onto an old thread seeking info on the 575. Lots of good info. What wasn't answered was "is it the same block as the 5.0 SC?"

Brian
 

Last edited by CuteCat; Jan 14, 2026 at 04:46 PM.
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Old Jan 14, 2026 | 11:46 AM
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Yes.
 
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Old Jan 14, 2026 | 01:51 PM
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It's all in the tuning.
.
.
.
 
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Old Jan 14, 2026 | 04:45 PM
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As suspected. Anyone know if suspension was enhanced by using deferent parts i.e. springs or dampeners? Also I'm aware of the "R" model reference, is that deferent than the "SuperSport" badged model?

Brian
 
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Old Jan 16, 2026 | 07:42 AM
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AFAIK the suspension was upgraded (either SACHS or Bilstein dampers - I can't recall?). The ride is noticeably firmer but not uncomfortably so.
 
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