09 supercharged vs 2010 supercharged
#1
09 supercharged vs 2010 supercharged
Hi I have searched and have not found real dyno results between these two models after being tuned with a pulley. I'm looking to purchase a 2009 but not sure if it will have the performce I would like. The differance between the 09/10 could be my deciding factor. Thx for any help
#3
Well to be honest the 09 is in my budget the 10 not so much but I guess I should say that the other car I'm comparing is an 08 s6 Audi with the v10 I just don't want to spend the cash on the xf if the 10 is that much better then the 09. That's why I have asked for a real world comparison from the 09 to 10
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#8
#9
5.0: SC = 470hp, 424tq
Difference: = 50hp, 11tq
50hp (at the crank) is not hard to get out of the 4.2 SC. A $250 pulley nets ~35hp (at the crank). The 4.2L SC has some decent aftermarket support since it has been around so long.
Various sites with 4.2L SC pulleys and various other mods:
Jaguar Supercharger Upgrade | Jaguar Supercharger
Jaguar XF Upper Supercharger Pulley Upgrade 4.2L (2.5lb), Eurotoys,Ltd.
Jaguar XF Performance Supercharger Pulley for Jaguar NEW XKR (lists hp at the wheels which will be lower than crank hp)
Last edited by Blackcoog; 06-25-2014 at 11:05 AM.
#10
#11
And regardless of what you do the 4.2L will not make that kind of power.
We have been waiting for years for the twin screw blower for the 4.2L and it's only out for the XK guys and it's at least $5K+. We don't really have much if anything for a tune either!
Get the 5.0L it's way ahead of the 4.2L and I have a STR.
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We have been waiting for years for the twin screw blower for the 4.2L and it's only out for the XK guys and it's at least $5K+. We don't really have much if anything for a tune either!
Get the 5.0L it's way ahead of the 4.2L and I have a STR.
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Last edited by tbird6; 06-25-2014 at 12:11 PM.
#12
#13
It sounds like the OP doesn't want to pay for the 5L SC so it doesn't matter what can be done to the 5L SC. I was trying to show that you can get the 2009 4.2L SC, swap on a pulley, and be just has fast as the 5L SC. You'd save ~$10k which is a decent chunk of change.
#14
+1 to your post. If the original poster is not going to modify the 5.0SC (non-R) then I agree 100% with your recommendation. On the STR we have seen 16rwhp (20bhp) and 12rwhp (14bhp) increases from the 1.5 pulley and intake respectively. That's very close to what the 5.0SC makes stock, and probably the 4.2 modded will have more low end torque because of the pulley.
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Either way make sure it's a SC ...you'll be able to do the mods at your pace...tbird6 is twisted...I have the 4.2 and I'm pushing 490 BHP....having a custome exhaust fabricated and it will put me way into the 500 range. Also have an Audi A6 ...just not as exciting as the Jag !
#17
Just a friendly question but where did you find the extra 50 or so HP with your 4.2 SC? In the STR subforum a member got his 4.2R tuned and I believe he yielded 7rwhp peak gain, so taking into account the power increase with the pulley (16rwhp), I am just curous how you got so much more power than anyone else. Would you be able to provide a dyno for reference? I would expect your car to be in the 365 -380rwhp range, but not the 420-430rwhp range where a 500bhp car should be.
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