Has anyone made measurments of KB supercharged XKR acceleration times, for instance 60-100 mph or so?

Will it (with 3.25 pulley) keep up with 510 HP X150?

 

100mph exceeds the posted speed limit. I'm sure that no one in this forum would ever do something like that.

 

I have a 2002 XKR with a upgraded lower pulley, LSD, 3.27 rear axel ratio, and the inlet/outlet ports bored out. Although I've never seen an X150 at a stop light with whom to go toe to toe, I can say that when I step on it at a stop light, I scare the sh*t out of myself. If it takes more to take an X150, then it'd be wasted on me.


Mark

 

A Kenne Bell will smoke a X150,this blower is not a toy and a serious purchase ! Once at that power level you will increase your risk of accidents and injuries.Keep that in mind.

 

Krajok lives not far from unlimited speed Autobahns.

 

No it will not smoke the 510 hp XKR

 

OK, now I know: I can kill myself... Does anybody have ANY performance data of KB equipped X100?

BTW: 510 HP X150 is 100 kgs heavier than steel bodied X100...

 

Not X100, but a KB AJ26 4.0 XJR has done 0-191km/h (118.82mph ) in 11.924s. That's the official 1/4mile result.

 

Sorry, just have the dyno plots, not any time trials.

The time depends so much on the launch and traction and these cars are prone to the one tire fire. LSD pumpkin s being built up now...

 

Um yeah it will, ,that blower will produce enough torque and power to make the weight of his car almost useless. Ive seen trucks at the tracks that weigh over 5000+ lbs run 11's and tens with that blower alone.

To some it up, that thing is pure wicked evil and devil eggs, and can provide more boost than any engine can ever want.

 

There are different sizes of KBs. We are talking about 2.6H with these cars.
....and the SC is just part of the combination.

 

Not knowing your setup, but taking you have 2.1L without an optimized intake, I would expect with the pulley you are still are south of 400 rwhp. So thats less power than a x150, and considering the gearing and quicker shifts, you will lose.

 

Thats fast! What is the setup/mods of this car? 550 bhp XKR-S makes 12.5 s.

 

I have 2.2L KB.

What do you mean saying optimized intake? TB bored out, new inatke elbow between TB and blower or intake pipe from air filter to TB?

 

Am not sure about the older 2.2 one, as I thought the newer big bore 2.1 untis where slightly better again, but if you have a good new designed elbow it's a plus again. Nevertheless I would still expect not over 400 rwhp.


Why not test it on a dyno? Or a 1/4 mile strip?

 

Stock XKR-S has actually "just" 520-530hp based on many dyno tests and runs 1/4mile @ ~12.2.

Forum's 1/4mile standings: https://www.jaguarforums.com/forum/m...andings-84783/

 

JCNA Forums - Jaguar Clubs of North America

here is a 2000 xkr with a 4.0, 600HP with the 2.6


Now, on the street 0-60 times are what count.
https://www.jaguarforums.com/forum/x...-0-60-a-64471/

as you can see,you can do 0-60 in under 5 seconds flat,and run a low 13's stock with the xkr in stock trim.

 

Well, my pulley is 2.68''. That means my KB 2.2 will flow comparable air volume than 2.6 with 3.25'' pulley. Maybe I'm to optymistic but I expect similar results as with 2.6L unit.

SteveM uses stock MAF and TB and his results are great. His XJR really smokes XKR-S and XFR.

My car is not ready yet but it will be back on road in 3-4 months. I can't wait to check it on dyno.

 

You said your pulley was 3.25 in your 1st post.

I have only experience with the bigbore units, and the 2.6LH which I am using is also a higher compression unit that consumes less power. This leaves more power to the wheels, and also means that you would have to turn it already faster to get closer.

As I haven’t seen how you have done your intake elbow, I can only guess, at least I would guess with the 2.68 pulley you want to use, you should be north of the 400 rwhp, maybe 430?

Have you done a baseline dyno with your car?

 

Stock 4.0 XKR runs 1/4 at ~13.5. 1/4mile time -8s = 0-100km/h ( 62mph ). That works very exactly for cars down to low 11 if no major traction problems at the launch. I have got 0-100km/h results of 4.2-4.3s and 1/4mile best is 12.34. Target for 2015 is 11.5 or better.