adding a supercharger to xj8
#1
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So far I enjoy my jaguar, but my biggest regret is that I didn't buy the xjr. Would it be possible to install asupercharger on the xj8? What all would be needed, just a supercharger, the piping, intercooler, new belts and a new ECM? I would rather install a new one as I have already upgraded various things on my xj8 including dying the piping and some of the interior panels, new grilles, custom wheels (got rid of the old ones as one was leaking), custom exhaust, and subwoofers. I figure I would just get a twin screw supercharger right away instead of the Eaton.
How much more difficult will it be to install a supercharger on one of these as compared to something like a supra (a friend has one and he said it was very easy to install). I haven't had much experience with tuning as I've mostly been building lowriders and leaving my daily drivers stock. But I figure if I can make a cadillac stand on 3 wheels and a riviera hop 40+ inches, it shouldn't be that hard to install![Big Grin](https://www.jaguarforums.com/forum/images/smilies/biggrin.gif)
Thank you in advance for the info.
How much more difficult will it be to install a supercharger on one of these as compared to something like a supra (a friend has one and he said it was very easy to install). I haven't had much experience with tuning as I've mostly been building lowriders and leaving my daily drivers stock. But I figure if I can make a cadillac stand on 3 wheels and a riviera hop 40+ inches, it shouldn't be that hard to install
![Big Grin](https://www.jaguarforums.com/forum/images/smilies/biggrin.gif)
Thank you in advance for the info.
#2
#3
#4
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your compression ratio has nothing to do with the ECM. when the piston comes upon the compression stroke it compresses the air/fuel mixture. on a reg. motor usually 9.5 to 11.5 you would have to modify the motor by
1 get a shorter connecting rod or
2 get smaller domed pistons
this will get you to 8.1 or 8.5
1 get a shorter connecting rod or
2 get smaller domed pistons
this will get you to 8.1 or 8.5
#6
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You would be far better of selling your car and purchasing an XJR. Cost would be the same out of the shoot, but in repair costs you will save a mint.
Once you've changed it from the factory plan, mechanics will have to figure out what you did vs. what the problem is vs. how to fix it. You will pay for the extra time. Go with the factory original.
Once you've changed it from the factory plan, mechanics will have to figure out what you did vs. what the problem is vs. how to fix it. You will pay for the extra time. Go with the factory original.
#7
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ORIGINAL: ken@britishparts.com
You would be far better of selling your car and purchasing an XJR. Cost would be the same out of the shoot, but in repair costs you will save a mint.
Once you've changed it from the factory plan, mechanics will have to figure out what you did vs. what the problem is vs. how to fix it. You will pay for the extra time. Go with the factory original.
You would be far better of selling your car and purchasing an XJR. Cost would be the same out of the shoot, but in repair costs you will save a mint.
Once you've changed it from the factory plan, mechanics will have to figure out what you did vs. what the problem is vs. how to fix it. You will pay for the extra time. Go with the factory original.
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#9
#10
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You could install thicker headgaskets (do they make metal ones for the AJV8?) to lower compression, but you'd need a good amount thicker than factory spec.
I think my headlight adjuster and spring for my leaper are still hanging out in the plastic underpanels......haha.
I think my headlight adjuster and spring for my leaper are still hanging out in the plastic underpanels......haha.
#11
#12
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You don't want to know how much you will have to do to convert the motor, and it will probably set off check engine lights forever. The engine computer and tranny computer are tied to togther with a network and they must all be programmed to work together. In addition, as was said, the engine needs to be changed to get the right compression (cheaper than rebuilding it and engineering it to lower compression). It has been the opinion of most forums I am on that it is much cheaper and more satisfactory to buy an XJR.
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