SC pulley sizes
#1
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After downloading the 2011 XF technical data sheets from Jaguar, I noticed that the maximum boost pressures listed for the SC model is 7.3 psi and for the XFR at 10.2 psi. Is this due to different pulley sizes? Or is this difference somehow programmed? Any help appreciated.
#3
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The lower pulley seems the same on all the models (according to the parts catalogue). So if there is a boost difference, it is probably via the upper pulley, but I can't check that. Boost difference would only be done via pulley changes on supercharged engines, and not via software as on turbocharged engines.
#4
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The lower pulley seems the same on all the models (according to the parts catalogue). So if there is a boost difference, it is probably via the upper pulley, but I can't check that. Boost difference would only be done via pulley changes on supercharged engines, and not via software as on turbocharged engines.
#5
#6
#7
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My neighbor has a 2010 XKR, He said he will try to measure the size of his vs my XF SC to see if there's a difference once he get's back from work.
If there is a size difference, I wounder how hard would it be to just put on the smaller pulley? What else would need to be done after the pulley change, if it is possible to change the pulley?
If there is a size difference, I wounder how hard would it be to just put on the smaller pulley? What else would need to be done after the pulley change, if it is possible to change the pulley?
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#8
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On left, highlight under XF "Media Kit"; on small screen change, pick language and then download. 3 files, double click specifications.
#9
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My neighbor has a 2010 XKR, He said he will try to measure the size of his vs my XF SC to see if there's a difference once he get's back from work.
If there is a size difference, I wounder how hard would it be to just put on the smaller pulley? What else would need to be done after the pulley change, if it is possible to change the pulley?
If there is a size difference, I wounder how hard would it be to just put on the smaller pulley? What else would need to be done after the pulley change, if it is possible to change the pulley?
Last edited by VetteOwner; 03-05-2011 at 01:40 PM.
#10
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Well my neighbor attempted to check the size difference.. Not much space under his hood betwween the SC and the radiator. It does apppear to be a size difference. He could not exactly tell how much, but the supercharged XF pulley is alittle bigger.
It would be interesting to see if anybody have changed their pulley, and if they did see a difference in PSI.
It would be interesting to see if anybody have changed their pulley, and if they did see a difference in PSI.
#11
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