XJ6 & XJ12 Series I, II & III 1968-1992

85 XJ6 Front Silencer Replacement - Exhaust System

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Old Apr 19, 2020 | 02:43 PM
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Default 85 XJ6 S3 Front Silencer Replacement - Exhaust System

Hi all,
am currently pondering on replacing the front silencer in my 85 Jag, would it work if I replace with below photo shown converter?

Expert here are welcome to diagnose this for me.

 

Last edited by mikega; Apr 19, 2020 at 02:46 PM.
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Old Apr 19, 2020 | 05:38 PM
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do you mean the catalytic at the Y pipe ?
that is not a silencer, it is a catalytic converter! why bother with that?

eliminate it completely, it only creates a hot spot under the driver's floor. The car will pass inspection without it, as long as you warm up the engine driving the car for at least 1 hour before taking it to the inspection station, and assuming you are in a state which is still ripping off owners of 1985 cars.

Instead, get a non-catalytic European Y pipe, nobody will know and your engine will breathe better, less obstructions, run smoother, less heat.

 
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Old Apr 19, 2020 | 06:32 PM
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Originally Posted by Jose
do you mean the catalytic at the Y pipe ?
that is not a silencer, it is a catalytic converter! why bother with that?

eliminate it completely, it only creates a hot spot under the driver's floor. The car will pass inspection without it, as long as you warm up the engine driving the car for at least 1 hour before taking it to the inspection station, and assuming you are in a state which is still ripping off owners of 1985 cars.

Instead, get a non-catalytic European Y pipe, nobody will know and your engine will breathe better, less obstructions, run smoother, less heat.
Thanks Jose,
Below No. 3 in fig 1 but in fig 5, is No. 1 of the attach photos are the two smaller silencers I was referring to in the initial post which under the car below the passenger doors.

However, you have save me from over $400 cost when I planned buying the Y catalytic converter tomorrow. As you have said, I will replace the cylinder below the Y with a straight pipe as I have already remove the converter substances from that cylinder.

With regards to those two small silencers, can I replace them with something else?



 
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Old Apr 19, 2020 | 06:38 PM
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yes, you can replace the two mufflers under the rear seat with generic or standard mufflers.

I took one of the originals to the auto parts store to match them in size, pipe diameter, and pipe orientation.

 
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Old Apr 19, 2020 | 07:54 PM
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Beofre i lumped mine, i had one of the front mufflers blow a seam, so deleted them.. here is the thread..
https://www.jaguarforums.com/forum/x...delete-170922/
 
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Old Apr 20, 2020 | 05:47 AM
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I rebuilt mine as it came from the factory but eliminated the catalytics. The over-the-axle pipes are stainless steel so they last forever.
 
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Old Apr 20, 2020 | 06:45 AM
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Well, soon I will delete the cat and those two mufflers and replace with pipes.

Already I have received offers and the lowest offer is bout $11,000. But whoever cash in first will own it and am hopping to let it go by this week Friday or somewhere next week.
 

Last edited by mikega; Apr 20, 2020 at 06:50 AM.
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Old Apr 20, 2020 | 07:35 AM
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Default Fuel Tanks Part Number

Originally Posted by Jose
I rebuilt mine as it came from the factory but eliminated the catalytics. The over-the-axle pipes are stainless steel so they last forever.
Hi Jose,

Please do you by a y chance know the part numbers for the two fuel tanks?

Thanks
 
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