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

SIII Dropping the rear suspension

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Old Dec 28, 2025 | 07:28 AM
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iramphal's Avatar
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Default SIII Dropping the rear suspension

I'll be doing this over the next few weeks and found this somewhat informative. In it he mentions that replacing the resonators with a straight pipe results in no change - I assume he means noise/drone etc. Was the exhaust just over-engineered as per Jaguar's philosohy? Anyone ever done this? I cannot seperate the resonators and will need to cut them off.
 
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Old Dec 28, 2025 | 11:32 AM
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The rear mufflers make a noticeable difference in sound level. Moreso than the front mufflers, IMO

Cheers
DD
 
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Old Dec 28, 2025 | 02:37 PM
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Thanks Doug. Did not seem right for a straight pipe if Jag went to all that touuble for resonators - and added expense to do it "right". I will salvage mine.
 
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Old Dec 29, 2025 | 12:53 PM
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When I did mine i couldn't separate the over the axle exhaust from the back mufflers and cut the pipes and used a female-female pipe connector to rejoin them (didn't trust my welding skills under the car}. Don't trust those old metalastic connectors to hold up the IRS, always have a jack under it. I KNOW. It's really amazing how little holds the IRS in place.
 
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Old Dec 29, 2025 | 04:33 PM
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That was my thought, I will cut the pipe to leave enough resonator to splice onto. Many thanks. Female to female sounds the correct way to proceed.
 
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