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I can't see how that intake would fit under an XKR's bonnet, not to mention over the top of our SC. Has anyone done this on our cars, or is this a sedan - only upgrade?
I have only done this on the 4.3 STR/XJR as there is an easy fit. The XKR is a different beast, but also there the stock intake is a restriction.
Avos, I reached out to PRO M for the 92 MAF. They have it and said they can set it up with the Jaguar AJ34 4.2S parameters but said that I would have to tune the car once I install it. Is this true? Do they not calibrate it to work with our stock injectors and the adjusted flow rates?
I had my ECU sent to UK to get tuned by Paramount like 2 years ago. It was a long and expensive process and not the best hp/$$$$. I would hesitate to send it back to them to tune it again to compensate for the larger MAF, especially since we cant run the car on the dyno and get live data to make adjustments off of.
Do you have any insight you could offer?
I have never had to do a ECU tune to get the MAF to work, and I have used this on the stock injectors. Pro-M can also adjust the tune for high flow injectors, where I used them om 600cc ones.
You may want to ask them why they think you need a ECU tune.
I wonder..If you really want to see more parts like this, for upgrades or obsolete parts, .who of you is able, and willing to join to help finding metal casting services using lost wax - the one used for this size and quality- collapsed due to COV19 .This model up to wax is fine...but suppliers for casting ..not the casting itself, but their culture --and their work ethics.. ah. that was hard even before lock-down
I took some time and tests as well before I had a good supplier I could work with, I'll ask the one I worked with (Hong Kong based) if they can do metal casting using lost wax.
We will know for sure though, I am doing my "before" or baseline dyno next Wednesday. I will make an unboxing video for the TB when it arrives and post it on my YouTube Channel. Then I plan to install the Luca TB along with the ported plenum and polished outlet. I will then do an "after" dyno to see how much improvement there is and can share impressions with the group if interested.
Well, you win some, you loose some. Car was a few seconds from burning down today on the dyno right before the pulls... fortunately the Jag is alright. Will just have to re-run some wires.
My new throttle body arrived a few days ago. Beautiful module. Glag I got one! I need to dig out the OEM TB and swap parts to make it a complete unit.
Have everyone else received theirs?
Nice , but did you succeed to make it work with the 4 pin version?Or the original version you had is the one from the picture?
My car is 08 Xkr and this is the original TB bored out and enlarged butterfly. Not waiting a year to get them made for our cars 😂
Btw those coolant lines aren't necessary , could of removed those from the mold to make things easier .
My car is 08 Xkr and this is the original TB bored out and enlarged butterfly. Not waiting a year to get them made for our cars 😂
Btw those coolant lines aren't necessary , could of removed those from the mold to make things easier .
Recommending removal of the coolant lines isn't quite correct. In southern regions in the USA where it seldom gets below 32 degrees, the coolant lines can be bypassed. But in northern regions where temperatures get down to 0 degrees and lower, coolant flow is important to keep ice from forming in the throttle area.
Last edited by Tijoe; Aug 22, 2020 at 12:06 AM.
Reason: spelling
Did you get a response ? I PM'd him after a few days & have been ignored.
Sorry I was off the site for a while. So original TB was done by Maxbore but it sounds like that was last jaguar TB he was wiling to do. I have sent my 2nd tb to another guy who will see if he is able to get it done. Fingers crossed that he can do it
Robinus, I did. “I am really sorry, but the old lathe I used to bore those huge TBs quit working a few years ago.
I could not get it repaired.
I replaced it with a modern lathe, but it can't spin castings that big.
I am not able to help you with that TB.
Thank you
George www.maxbore.com”
Alex, I can’t wait to hear if wherever you sent yours to was done.
Robinus, I did. “I am really sorry, but the old lathe I used to bore those huge TBs quit working a few years ago.
I could not get it repaired.
I replaced it with a modern lathe, but it can't spin castings that big.
I am not able to help you with that TB.
George www.maxbore.com”
I was asking if you'd maybe had a PM from Alex, but thanks for posting that for me. I emailed Maxbore as my first stop months ago even though I knew he didn't do Jag TB's any more. I've been looking for months & have had plenty of people tell me how easy it is before saying they won't do it.
If you are looking for a machinist to bore out a throttle body, don't get hung up on having it bored using a lathe. Any qualified machinist that can set up a numerically controlled mill or CNC mill should be able to very accurately bore out a throttle body. Using a CNC setup one could flare the upper OD to a larger diameter and/or other features. If the CNC has rotary table capability that could make the job even easier.
If the shop has a centerfinder fixture, they could quickly find the exact center of the existing bore, then swap over to a mill bit to mill it to a close-to-finished diameter. Then they could put in a surface finishing grinder/cutter/polisher and get the finish to whatever you want. (Even a super fine polish.)
Should be a piece of cake.
I bore out larger holes on a fairly regular basis using my mill and rotary table. My mill is a manual one and is tired and it would take too long for me to achieve the exact diameter and finish one would want on a throttle body bore, but the concept and approach is the same.
Would agree as well, which would leave the throttle blade as (last) major hurdle.
I would guess that maxbore could be able to help there, and the small mods to the shaft would be easy to do as well.
One can always try with a cheap 2nd hand unit from Ebay to check what the maximum diameter can be, before you do the right one.
At least that would have been my approach if I needed one.
2008 XKR Convertible, (mods: AlphaJagTuning ECU Tune , 1.5lb pulley, (200cel cats( are now melted), xpipe, Bosch 001 pump, 180 Thermostat.
