The Device under reverse engineering I've sent to the platform as a base model, was the Straight Pipe Lines model, because the model we are aiming to reverse, is really hard to find, but very small differences, so we doubled checked few control sizes, and all good.
As said somewhere above, bolt pattern is different, but we've got picked the X100 original measurements (tanks @deuce2000 )
And not only that, there is a breathing channel serving as a key pattern for black cover, which actually allow to install the 4.2 turbo X100 cover over this aluminium chassis , but not the other version over X100 4.2



We started the CAD drawings on Scan mesh, and mean while we are doing the making of video for the steps.
Some updates about the kit to be delivered to you along with the 83mm housing:

-2 steel shafts for motor centering- assembled
-1 steel shaft for middle dented wheel mechanism - assembled
-2 coolant ducts- chromed bronze ducts- either pressed or on tread- in the picture we made the tread version allready (I will need some measurements for the angle to send to the platform developers)
-The butterfly 83mm
-1 Main axle shaft adapter.(still in discussion if they will provide the assembled axle with bearings, or to let buyers to do it. The Reason is the risk of voiding service reliability by the end users who will not have enough tools or skills to install the butterfly or bearings in the correct position )
-1 set of screws for butterfly (there are not tread sealed are originally pressed on both sides- so impossible to save, but as Tjoe said , can be removed is just needed one side drill, will be available in the video)

 

Hello everyone!
I have just returned from my honeymoon after more than a month of absence!
I am pleased that my research of someone who can make us a bigger TB is giving the results I hoped for!
After the useless words of Cam-Efi, now our friend Cristian (found by me on facebook) is working on this thing and I'm glad!

I really hope that soon we will see the results!

regards

 

Interesting thread!
Just today I decided to give maxbore a call to enlarge my throttle body on 08 XkR. I did not get a hold of him but if I understand correctly from this thread he no longer does throttle bodies for Jaguars?
I'm pushing nearly 100 horsepower more than stock so I think I definitely need a larger throttle body to accommodate.
Also if anybody is interested, I tested a stock dual intake system that we have on the XKR and there still are 1.5 PSI or restriction, so it wasn't that big of an improvement from a single system which I believe were at 2 psi.. So there's definitely power to be had there as well.

 

Hi AlexJag,


Wellcome to the thread.

While Maxbore work on the stock items, and probably the obsolete Items are harder and harder to find, their service was either affected by this problem. Another problem is that you are limited by the exteriour of TB measure, so walls need a tickeness to outstand their purpose, so max bore is 78,5mm

The other approach is to build the part again , with your desired size and features.

Were we are now:




- 3D Scan has been made now for X100 TB


- CAD modelling has been made as well:





- New Bore and Bold pattern has been designed - and is ready , to match the X100 manifold with 83mm bore :



- Internal steel bolts of the housing are done

Let me know if you would like join to the pre-orders, next week , first model will be ready for measuring on the car.

 

My is x150 XkR 2008

 

Well not that anyone asked me lol. But I really do feel a revised inlet /tb combo would be the way to go.

i realize there isn’t much to an m112 tb I inlet however in my experience with twin helix roots blowers, any restriction before the Sc kills power.

As an example( I’ve mentioned this years ago) a few psi and quite a bit of power can be had simply by modifying the air intake, tb, maf and tb to sc inlet.

On my 3.8 v6 motors with an m90 I run an 85mmtb, 90mm maf and a 3.5” air intake with a highly modified sc inlet. Every time I look at my xkr’s setup I cringe. I can see lost hp.

So if a new sc inlet that could support an 85-90mm tb could be made along with the tb that would be a great first step. And then to worry about the maf and a custom air intake.

Anyway I had my factory Tb bored out and my factory inlet massages to work with a later model blower...ah yes two different blower inlets.

Anyways....inlet and Tb combo. Has anyone worked out a MAF alternative besides an abaco or pro m?

 

3,5" OD

 

I am successfully using this 3.5 inch MAF sensor housing with my Twin screw setup based on the 4.2 block and AJ26 engine management system. I use the later style AJ27 slot-in MAF sensor. The larger inner diameter of this 3.5 inch MAF housing lowers the airflow velocity so the MAF sensor gives proportionally lower output voltage which works very well with higher flow injectors that I use - only needed some fine tuning of the MAF sensor output with the help of AEM piggyback to get perfectly zero-ish fuel trims.

 

So is x150 TB in works or only the x100? I'm interested in the x150 for my xkr

 

Yes, sure can be done, but they are slightly different, so extra adjustments needs to be done, comparing with X100. Gratefully to @Tijoe we got some feedback about differences, but a picture inside, and a dent number can help a lot to tell more about the changes
Anyhow, just after we are done with X100, we can regroup for X150 order, but as you probably noticed, for a decent price, we need to find some more willing people to do it. And this is mostly because an enlarged TB to this size, the butterfly will hit the manifold,if not enlarged(with a dremmel , grinder etc) to this new bore.

Another question has been put here, if size can be pushed to 85mm for X100, ( or X150 with same bolt pattern). The 83mm is the maximum size, not because of the motor housing or anything from mechanism side, but limitation comes just because of 1 bolt which is very close to the inlet wall. So to be able to keep all the internals as original, and to be able to make revisions to your TB with the original parts, only workable solution is 83, otherwise for 85 need another bolt hole and thread (hopefully you have enough material in there) in your intake manifold

 

I still feel an inlet throttle body package is what’s needed. I have a bigger TB on my supercharged v6 with an m90. And it made more power than with even an aftermarket 75mm.

 

Just one other thing to consider that I thought of. Being I had gotten a twin screw for my xkr I rebuilt my xjr blower and put that on my xkr along with a ported tb( think it was 83mm) and modifies Inlet. The later model m112 used on the 4.2 engines is superior to the earlier ones. It has a square inlet as opposed to the oval the early model has. Not to get into the why, it’s just a better inlet design.

so why not create an inlet with an 85mm or 90mm Tb for use with that later model supercharger. The people that buy the Tb I’m sure would spend the cash for the inlet and pick up a used later model sc. I’ll tel you I would buy that combo 85 or 90 mm Tb with the later model square port inlet. I’d then gladly sell my 83mm Tb. Seriously. If you guys want performance even an 83 mm Tb is a restriction. At this point youde have to worry about the maf size being the inlet restriction.

 

Hi XxSlowpokexX, do you see this guy here marked in red ?

We did some extra housing moods , and turned to Allen bolts to be able to use the 83mm. The 85mm gives very thin wall to the motor housing, risk to perforate if we move bore upper, or thin wall in this area if we trim for bolt head clearance . You can guess why 90mm is not achievable with your original manifold.
To be done on 90 different sprockets setup needs to be used, which will dramatically increase the new part price. Even if it will be carryover sprockets still tuning to your original sensor needs to be done.
That is why the extra "spend the cash for the inlet " could mean much more than what now seems to be an easy change --just adding 7mm more to 83mm

 

I did see that issue which is why I was mentioning going larger with an inlet. I'm not familiar with the intricacies as I haven't ever looked into this but did have my stock TB bored to 83mm (Maybe 81 I forget at this point). I like the inlet idea even if going 83 or 85 because it can then allow you to run the later model more efficient m112 unit. As I mentioned with my little 3.8 v6 in factory stock form I made more power with an 85mm TB and revised inlet.

The Twin Helix Eaton hates restriction at the inlet as its an air mover not a compressor. That's also why even the change in inlet design makes a difference. I'm an engineer so I can follow along pretty well :O). So even for the puny lil low production # thunderbird SC's they produced TB's and inlets. Attached photos just for the heck of it.

 

Alright guys, now Easter holidays are over, but printer worked this time. So I got the part from sechtor.com
Here is your part out from the print. Now we need volunteer who is technically able to give feedback about part installation, space, clearance with the rest of the parts(parts in your engine bay), etc.
Preferably will be to be in Europe. Got informed by the platform owners,that the customer available for this step will get 50% discount for the final part.



For more pictures follow the link :

https://www.facebook.com/permalink.p..._post_reaction

Preorder link will be available really soon. Most probably in Monday

 

I wouldn't mind being the test mule. But I am in Tampa, Florida. And I am not sure if all clearances would be the same as I have the Range Rover upper intake tube which is a tighter fit due to it's height, and a few other things chopped up to fit ice tank and nitrous lines (I doubt these will influence though). Let me know if you need me. Thanks

 

I may be able to help if you can't find anyone in the EU, I am in Belgium.

 

You have another xkr 4.2 without your famous twin screw kit?

 

No, but I do have some experience on many models with this type TB and I know one/(or more) that may be interested who have older TS setups.

 

well! I am pleased that there is interest in this project started by me. As you know I tried to start it with Pink-Bat (then Cam Efi) without success, but then with the facebook friend Cristian and his team Sechtor.com he realized a dream of mine that is to give a chance to upgrade to all owners of XKR without spending too much money. It is generally necessary to enlarge the intake manifold and the mouth of the compressor. And I'm happy if you Avos, you will contribute to this project!