The worlds fastest XKR 5 L supercharged
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bgpenguin21 (04-28-2024),
dangoesfast (11-27-2023)
#43
#44
Join Date: Apr 2008
Location: Ottawa, Ontario, Canada
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Well, I’m happy for you that you are pleased with your modifications.
And I’m happy for those that like to take their cars down the drag strip or runway.
I am more a slalom, rally, winding road too fast kind of guy… in any weather; to be met at the end of the journey with scotch, cigars, steaks…
One thing for certain, we all drive this car because she does so well at all these things.
And I’m happy for those that like to take their cars down the drag strip or runway.
I am more a slalom, rally, winding road too fast kind of guy… in any weather; to be met at the end of the journey with scotch, cigars, steaks…
One thing for certain, we all drive this car because she does so well at all these things.
#45
you really are a ————
you think it’s a troll well why don’t you phone Viezu technologies and ask them? I suppose you can get their phone number can’t you? The only imaginary thing is your brain
#46
Join Date: Apr 2008
Location: Ottawa, Ontario, Canada
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steve_k_xk (11-28-2023)
#47
excuse me, sir, however, you were not the one accused of being a troll
I do not like people calling me a liar or a troll when they can simply pick up the phone and call Viezu technologies or they need me to provide them the telephone number
I only came on this site to explain and made an XKR 5 L supercharged convertible into the second fastest fully convertible car in the world which I thought people would be pleased about yet they want to complain that it’s on a rolling road Dyno obviously I can see that and yes, cause a lot differently when they’re having to push air out of the way or if there’s a crosswind or if there’s a tailwind, but I have asked Rally and check experience, also once it has been re-sprayed again, it’s going to be stored until swallows racing make it an eight-speed manual and if anyone down that phone Tom
Is seems people on here are just jealous of someone trying to achieve something that has never been done before with a Jaguar
I have the time and the money so I’m going to do it no matter what, and anyone with a Jaguar that would like to race my car once it has a manual transmission and racing wheels I’m up for it anytime anyplace anywhere!
#48
#49
apart from lightening the car by fitting it with race wheels
Now I have to wait for Tom at swallows racing. He will do every upgrade from now on. I hope you understand now I was not trying to be the new boy on the block with the big fast cat. I just want to have the fastest fully convertible car in the world and because Jeremy Clarkson stated” I cannot believe I’m saying this, but the most comfortable convertible in the world which will happily go around town at 30 miles an hour all day long yet is a rocket is a Jaguar XKR”
that is why I purchased the best one I could find, which was from Frattellie cars, that is why it was taken to Viezu technologies to do every upgrade. They were capable of doing, and it is why it’s next step is to go to Tom. Now I hope that explains absolutely everything
which reminds me to try and get hold of the man himself. Have a great day.
#50
#51
Quick rough calculation:
frontal area = 23sq ft
Drag = .34
hp to achieve 240 mph = 1080
"in the perfect world"
WJ
hmmm, went to a different calculator (salt flats), looks like 750 hp could achieve 240 mph with the correct gearing and track length with zero wind
but thinking about Bugatti, 1000hp = 250 mph+/-
frontal area = 23sq ft
Drag = .34
hp to achieve 240 mph = 1080
"in the perfect world"
WJ
hmmm, went to a different calculator (salt flats), looks like 750 hp could achieve 240 mph with the correct gearing and track length with zero wind
but thinking about Bugatti, 1000hp = 250 mph+/-
Last edited by wymjym; 11-28-2023 at 09:19 AM.
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steve_k_xk (11-28-2023)
#53
I don't think anyone ever said the car had done 214mph on the road. The video links works fine and Paramount state it did 214 on the dyno. I reckon it's safe to say this car's not likely to go that fast off a dyno, safely anyway. By the way Viezu and Paramount have somewhat of a troubled history though I've no personal experience with either.
Tom and Swallows, I do know personally however, and they're a solid bunch. They're serious Jaguar motorsports enthusiasts with a great reputation.
Tom and Swallows, I do know personally however, and they're a solid bunch. They're serious Jaguar motorsports enthusiasts with a great reputation.
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steve_k_xk (11-28-2023)
#54
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Stuart S (11-28-2023)
#55
For clarity, the kit I’m referring to is a full ZF manual transmission, not an automatic.
https://swallows-jag.co.uk/reinventing-an-icon/
#57
Technically, based on final drive ratio (3.31.1) max rpm of 6500 and an overdrive ratio of .69 on the ZF6hp are we not all going to have the same theoretical top speed on a dyno which offers minimal resistance , I'm not here to rain on anyone's party and love the fact you are committed to achieving such a feat on a already powerful and beautiful vehicle, but have you ever thought of having your rpm lifted to 7000 to achieve a higher top speed instead of looking at different gearbox solutions and stand-alone software in order to have your xkr functional
#58
yes, we had looked at that we found that it wouldn’t make that much of a difference
Technically, based on final drive ratio (3.31.1) max rpm of 6500 and an overdrive ratio of .69 on the ZF6hp are we not all going to have the same theoretical top speed on a dyno which offers minimal resistance , I'm not here to rain on anyone's party and love the fact you are committed to achieving such a feat on a already powerful and beautiful vehicle, but have you ever thought of having your rpm lifted to 7000 to achieve a higher top speed instead of looking at different gearbox solutions and stand-alone software in order to have your xkr functional
#59
Sir, it is evident that the current gearbox is being pushed to its limits, particularly when considering its performance on the Dyno. While I acknowledge that the behavior of the car will substantially differ on the track and the road, accounting for variables such as crosswinds, headwinds, tailwinds, and variations in surface conditions, it is apparent that we have reached the maximum potential of the existing gearbox. The time has come for the car to be entrusted to Swallows Racing, where Tom has demonstrated his capability in effecting necessary modifications to other vehicles, such as implementing an eight-speed gearbox that requires a shorter driveshaft. There are additional adjustments that can be made to the engine without imposing excessive strain, but the gearbox stands as the primary avenue for progress. Furthermore, the transition to carbon wheels will significantly reduce the car's weight. While Viezu Technologies has taken the car as far as possible, it is now imperative to engage the expertise of racing professionals. As individuals with firsthand experience in both rally and track driving, we understand the significance of this decision and emphasize that the racing experts are the most qualified to advance the car's performance.
Along with the carbon wheels, gearbox, and obviously increased engine power, have discussions taken place in regards to further weight reductions, suspension upgrades, and increased braking capabilities? I would love to hear what you potentially have in mind for these areas of the build.
Last edited by steve_k_xk; 11-30-2023 at 05:03 AM.