XJ XJ8 / XJR ( X308 ) 1997 - 2003

1999 XJ8 Turbo 6.0L 4L80e swap

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  #1  
Old 11-05-2013, 10:20 AM
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Cool Project 'Dead Cat' 1999 XJ8 Turbo 6.0L 4L80e swap

Here is a link to my photobucket albumn of my swap pics.

1999 XJ8 Turbo 60L 4L80e Swap Pics Photos by aknovaman | Photobucket

More to be added once I get mounts back from powder coater and engine installed for final time.

PAC 1218 valve springs got delivered today, waiting on Isky tripple 12 cam to arrive then final cleaning of engine/trans and start assembling/installing drivetrain.


Target HP is 600 rear wheel (easily done)
6.0L LQ4 engine
Precision PT76/75 turbo
80lb injectors
GodSpeed 12x24x3 intercooler
4L80e trans for reliability
Yes, I know the rear end will need upgrades

One owner (old man ) garage kept, gold car with 99k miles
 

Last edited by aknovaman; 01-06-2014 at 09:34 PM.
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Old 11-05-2013, 12:35 PM
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As it sits now.



Plenty of room.



New turbo toys.



PCm mounting area.



Front end raised up nearly 2 inches from original motor to iron 6.0L and 4L80e trans.



Plenty of room.



Underpowered carcass boat anchor removed.



As I got the car.



Yes it's about 100 peach pits and a dead rabbit.

 
Attached Thumbnails 1999 XJ8 Turbo 6.0L 4L80e swap-imag0701_zpsdfaaa8f2.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-100media_imag0678_zps545d4ba3.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-100media_imag0630_zps892f691c.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-imag0848_zpse1047f62.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-imag0822_zps1c2049ef.jpg  

1999 XJ8 Turbo 6.0L 4L80e swap-100media_imag0687_zpsea643545.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-imag0281_zps37ed8618.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-imag0217_zps216f4db9.jpg  
  #3  
Old 11-05-2013, 02:40 PM
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cool job, keep us up to date - definitely want to see this car run by the way, have you still got the 'boat anchor' as the TB would be useful to one of our members I guess the extra height is without ancillaries, rads and fluid. Quaife do a drop-in lsd for the rear.
 
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Old 11-05-2013, 02:53 PM
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I gave the motor to a buddy who will likely just let it sit or sell it for scrap. Trans was slipping badly is why i got it for very cheap. Another buddy did an aluminum LS1 4L60e swap into an older 1994 jag coupe and added 1 inch spacers to lower the spring paocket under the a-arm. The iron block adds 100lbs and the 80e is about 75 more too. I am not thinking it will drop much with everything bolted and filled with fluids.
 

Last edited by aknovaman; 11-05-2013 at 02:56 PM.
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Old 11-07-2013, 01:48 PM
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Got motor mounts back from powder coater today. The paddle end with small hole will have a 1/2 inch allen head bolt going down through it then through the frame and a nut on bottom. Black urethane bushings keep it tight and clean. Flat plate is bolted to top of cast aluminum trans crossmember then bolts to trans tailshaft and Urethane trans mount. Will post pics of layout soon as I pull it apart. Waiting on $$ to buy Isky tripple 12 cam; should be sometime next week.


Here is where I am going to mount the PCM.

Here is a during mock-up pic of engine mount

Van harness measurement. Think I will shorten it a bit. Eric suggested I place PCM in trunk. ;-)

Snakes ! Thats a gallon container of oil not a quart to show size relationship.

Literally 12 feet long van harness

Driver side frame rail and engine mount through frame hole

Eric (thx) got me a Astro van Hydro-boost unit last month and will convert over to it too.
 
Attached Thumbnails 1999 XJ8 Turbo 6.0L 4L80e swap-imag0922_zpsebbd69ee.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-imag0848_zpse1047f62.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-imag0828_zpsbc12281d.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-imag0831_zps50bc4e79.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-imag0830_zps6a5ccb39.jpg  

1999 XJ8 Turbo 6.0L 4L80e swap-imag0832_zpsa515cac5.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-imag0311_zps730562de.jpg  
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Old 11-07-2013, 01:59 PM
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How are you interfacing the new ecm to the car's other modules? Have you bought a box?
 
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Old 11-07-2013, 02:05 PM
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I bought an interface box.
 
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Old 11-13-2013, 02:50 PM
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I'm looking forward to seeing this thing!
 
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Old 11-13-2013, 03:38 PM
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Default This project...

...is pretty DAMN cool!

Cannot wait to see the next post

Stewart
 
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Old 11-20-2013, 10:34 PM
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You do good work sir! May I ask if you had the motor mounts modified before sending to powder coating? That's the only question I have.

This is an awesome thread! Loving the work done so far and I'm looking forward to updates and pictures.
 
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Old 11-21-2013, 05:20 AM
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Wink

I made them myself. They are no where close to the factory design. Very strong and simple to clear the turbo down pipe.
 
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Old 11-22-2013, 01:27 PM
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Originally Posted by aknovaman
I made them myself. They are no where close to the factory design. Very strong and simple to clear the turbo down pipe.
I must say you do good work sir!! Looking at the pictures I was thinking, "Those aren't factory or any aftermarket I've seen". I'm thinking you should have made at least 3 sets for those who might decide later to do the same swap. I have a '66 Mustang inline 6 and thankfully so many have done a v-8 swap to make it easier to source the right motor mounts. I am sure there will be others who will want to do the swap once their engines take a nose dive and they want the power boost. Once again "AWESOME THREAD!!"
 
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Old 12-08-2013, 04:46 PM
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Little update. oilpan TIG welded and glass bead blasted. need to clear coat it and save pennies for my cam :-)


Got sidelined working on other swap harness and helping my buddy with his new project truck. Will post progress as it goes slowly.








buddies project '55 international truck Likely go 6.0L turbo Mustang Ii front end and Camaro rear. :-)




 
Attached Thumbnails 1999 XJ8 Turbo 6.0L 4L80e swap-gtooilpanfinal1_zpscce953c6.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-gtooilpanfinal2_zps62b064e1.jpg   1999 XJ8 Turbo 6.0L 4L80e swap-ihtruck4_zpsaafe8475.jpg  
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Old 12-09-2013, 06:40 PM
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That's going to be one fast farm toy lol Keep the pics coming!
 
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Old 12-10-2013, 08:59 AM
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I'd bloody love that truck - what do they cost?
 
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Old 12-10-2013, 08:27 PM
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In that shape typically $1500 to 3500 USD for a chevy model. International is not as desirable so less. Chevy weighs about 3400. And these are over 4000 pounds. This one is totally rust free except under front headlight and been stored indoors since 1972. Owner got this one from an old farmer that is a close friend too.
 
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Old 01-02-2014, 06:16 PM
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Cam ordered and should arrive early next week.

220/230 duration. 0.581/0.591 lift. 115.5 LSA

Not too lumpy idle but much better than a stock truck cam.
 
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Old 08-08-2019, 08:58 AM
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Digging this up from the dead. Did you ever finish it? I’d like to ask you a few questions If so.
 
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Old 08-12-2019, 06:30 AM
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PM me your email and I can send you all the info you need.
 
  #20  
Old 09-26-2019, 08:16 PM
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Unhappy

Car is sold without engine.

Health concerns forced sale.

Swap kit including can bus interface, misc mounts and brackets, and install manual is for sale if anyone is interested, PM me.
 


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