Who's got it, or claims to? Any 1/4 mile times? Dyno sheets? LET'S SEE EM BOYS!!

 

you guys are by far the most boring bunch of "car nuts" ever. Just saying. whoever thinks they have the fastest XJR in the country i'll show you one faster...

 

If I am not mistaken that title belongs to "Monster" who is known to post on Roadfly on occasion. The fastest XKR would have to be the world famous Norman's car, though fitted with the early Kenne Twin screw setup & intake design, he has been known to claim up to 650hp. However this is more than likely more urban myth than fact.

 

So....what does YOUR Jag run ?? :-). I reckon it oughta be safely into the 12s with your list of mods.

Cheers
DD

 

Not sure where my car would be in ranking, but think it is pretty quick ;-).

When it comes to the x308 XJR, http://www.matmoranmotorsports.com/ also has done some mods.

 

why not pinks?

 

@Thundercat: Just watched your Dyno Vid. Pretty cool. I'm sure the exhaust sounds good in person. I even enjoy the stock sound when you are pushing it. Understated, but throaty.

 

I don't have the fastest.

I have the biggest.

You know what they say.

 

THATS WHAT I"M TALKING ABOUT FELLAS!!! I actually haven't dyno'd mine yet but I do think it would run in the 12's. cams, headers, cats, intercooler, injectors all coming very soon. wanna break the 12 sec mark.

 

I'm sorry, I went to buckhead-imports.com and assumed that was your car in the video.

 

Just dyno'd today. 370 at the wheels!

 

Not a bad result, do you also have a before dyno? Will you be able to show also the dyno print?

 

That's very impressive - it would put the engine output at over 470bhp, meaning the work done is worth 100+ over stock.

I'd love to see under the bonnet, also information on the cam's and injectors you're fitting.

If this is correct, it would rival TVS supercharger performance, great work. Just thought, what are your intake temps, have you any idea? Also, VIDEO of the pulls!!!

 

on 275 35 20 ive timed my car dead on the dot 0-60 6 seconds flat, lol and thats with an acurate speedometre, 2000 model with 98k on the clock, is that good?

 

I'll get some pics up soon. I don't know about intake temps all I know is i need a GIANT intercooler. The motor was SCREAMING hot after each pull. This car going down to Buckhead imports to see what they can squeeze out of it. Headers, cats, intercooler, heat exchanger, valves, injectors. Those guys do some pretty awesome stuff. As soon as they tear into it i will know a bit more and i'll post a thread which will track its progress.

 

Cloudy little kitten sorry I mean Thundercat, I have a car coming to our shop in a few weeks to have one of Andre's Twin screw setups installed as well as the heads ported. I should have Monsters car in for this as well as a few more tweaks. Please feel free to come down & have a look as it is not that far from you. As a side note I know he has also changed his rear end ratio as well as custom free flow exhaust system.

 

I once knew a guy who had a killer XKR but didn't have the minerals to put it on the rollers. I OWN MONSTER. It's too far

 

assuming that's 370rwhp on a rolling road?

not a bad increase over stock, which mine is, and pulled 320 on a hub dyno. i've heard stories that increasing the pulley size doesn't net much more hp due to the extra heat, but does increase the area under the curve significantly, which would mean the difference is much more noticable on the 'bum dyno' rather than on paper :P

 

Not sure what the conditions where on the dyno, hope to see that also on the dyno slip, but if 370 rwhp (445 bhp with 17% drivetrain loss) was measured with normal fuel (i.e. no race fuel or additives which I assume, but am not sure due more than likely high boost pressure), it is not bad at all, although more changes where done than just a pulley one… The drawback is of course the heat soak, and there more work is needed if you want the power for longer runs that just a short one on the dyno. Already gave some suggestions in another thread.

 

I are confused. You asked who has the fastest XKR, but then started talking about 1/4 mile times and dyno wars and never once mentioned top speed. So, what do you want to know? Fastest? Quickest? Most HP? Most torque?

Me? I just have a lowly XK8, don't have my sprayed Mustang anymore.