Twin-screw anyone?

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#21

11-15-2017, 04:43 PM

User 42324

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OK. Thanks for the reply, Andre. I guess it's fate 😊

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#22

04-17-2018, 11:14 AM

just_byron

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Bump!

I'm in the process of negotiating to purchase a 2002 XJR 4.0 and seriously considering a twin screw upgrade.
I have only recently joined this forum and can't seem to send private messages.
Is there anyone else out there wanting to do a twin-screw install?

AVos, what exactly was included in your kit?

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#23

04-18-2018, 11:53 PM

avos

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Here is a nice write-up, you will also see some pictures:
https://www.jaguarforums.com/forum/x...kit-usa-82598/

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#24

06-20-2018, 01:39 AM

CATPULT

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Quote:

Originally Posted by avos

Here is a nice write-up, you will also see some pictures:
https://www.jaguarforums.com/forum/x...kit-usa-82598/

I'm also quite interested in a twin screw setup for my '04 STR. Is there a plan to make another batch?

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#25

08-05-2018, 02:55 AM

insomniac_driver

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I have been constantly researching how to do this to my STR, currently spent a lot of money on it but i do plan to do this soon if it is within a strict budget and capable of DIY. I have to replace my supercharger soon anyways. The end goal is KB supercharger, LSD, and other goodies such as cooling mods and lighter components

If anyone could be of any help I would be extremely grateful. Thank you.

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#26

08-05-2018, 04:02 PM

Anders Hansen

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I am interested, but where would you get the KB charger. They will sell you one if it as a replacement part for a kit already bought from them.
I do have a mock up engine in the garage.

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#27

08-09-2018, 07:42 PM

Bottlefed

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Still available?

I want one im trying to have a 10second STR im already on spray just seen your post do we need a tune or any other mods to support your kit

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#28

10-09-2020, 12:09 PM

Matt300ZXT

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Maybe I missed it somewhere and yes its an old post...but all these replies on the thread have me REALLY curious; how much was the kit when he produced them last?

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#29

10-14-2020, 01:25 AM

DepchikSTR

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Im also interested

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#30

10-15-2020, 03:40 AM

Markel

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Quote:

Originally Posted by Matt300ZXT

Maybe I missed it somewhere and yes its an old post...but all these replies on the thread have me REALLY curious; how much was the kit when he produced them last?

Well, if you are REALLY curious, this was the cost in 2013 done by 'Jeff in Tucson';

''I did not do the work myself, so the costs are initially higher. Had I chosen to do the installation myself, it would have taken longer and I would have had to hire help. It also may not have run properly.

All of these things depend upon options and choices. I will keep AVos' supercharger kit price private because his kit is also dependent upon choices and I can't quote a price for him as an agent. His kit price is lumped in with other things. Taxes and shipping are thrown in as well. Prices are approximations. These approximate prices are for an engine swap and supercharger installation.

4.2 Engine with 42,000 miles:$4995 (+shipping)
Supercharger kit, related parts, intake, supporting hardware and other goodies (odds and ends): approximately $7000-8000
Installation (not including differential): $10,450 (lots of engine parts in that price, too)
Preparation for install by techs: (no cost, because they were nice)
Total: $22,445 - $23,445 (added without my receipts next to me, so there could be another $1000 missing somewhere)''

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#31

12-06-2020, 10:58 PM

Monroe Strawn

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Quote:

Originally Posted by avos

As some of you know I have quit making twin-screw kits last year for several reasons (not related to the kit itself). An owner of one of my kits asked if I could make another one, that in combination with my situation that allows it to do I have decided to make a last batch of the XKR/XJR twin-screw kits.

But now for you here, I have the ability to also make some 2.1L Twin-screw kits for the 4.2 STR, 4.2 XJR and possibly the 4.2 XF.

The 2.1L kits are not the same as the 2.6L I have made, but these still provide a very good power level pending on other mods, somewhere in the 450 rwhp, or a good 500 engine hp to be on the safe side, and possibly more importantly it is at a much lower cost than the 2.6L kits.

Please contact me if you are interested in a kit like this, I would need to know within 2 to 3 weeks in order to combine the orders and keep the costs low, and this is a one off!

Please let me know if you are still doing the twin screws for the StR I have an Ebony 2005 but I am in America. If any info on getting a supercharger upgrade let me know

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#32

12-13-2020, 01:34 PM

Louis May

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Hi please let me know if you still make a kit for 4.2 sport

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#33

01-05-2021, 05:36 AM

avos

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Quote:

Originally Posted by Louis May

Hi please let me know if you still make a kit for 4.2 sport

Its not likely, maybe I would reconsider if there would be at least 5 buyers.

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#34

01-07-2021, 09:39 PM

clubairth1

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Just remember that your 4.2L sport has higher compression than the STR and has not been upgraded internally for FI. You would be far better off to sell your car and get a STR. Even if you want Avos's kit.
.
.
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#35

01-30-2021, 02:29 PM

Monroe Strawn

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Quote:

Originally Posted by Monroe Strawn

Please let me know if you are still doing the twin screws for the StR I have an Ebony 2005 but I am in America. If any info on getting a supercharger upgrade let me know

Are you still doing the 2.1 set up

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