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3rd April 2020, 22:43 | #11 | |
Gets stuck in
MG ZT 260, Rover 75 Connie SE auto Join Date: Feb 2013
Location: Redruth
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Quote:
I still have the as new s/s Cybox system, but am now actively looking for the source of the resonance. I think the problem is the wheel well, which is resonating badly at 1400-2200 revs under load. The exhaust bracket on mine is welded to the passenger side of the wheel well, and even with a new rubber support, I feel it's not decoupling the exhaust enough from the side of the wheel well. With everything out of the wheel bay, tapping it really does boom like a steel drum. Play from engine mountings may also be another factor. but I haven't properly checked them yet. I'm going to clean up and paint the wheel well properly and then strategically supplement the existing sound deadener strips with Noico 2mm butyl sound deadener. I've a load of other stuff ongoing, so won't be able to report on results for a while until the car is back on the road. |
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4th April 2020, 09:45 | #12 |
Posted a thing or two
Rover 75 Saloon Join Date: Apr 2019
Location: Under the car
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I've got a new Bosal 278-967 which didn't produce any resonation when I tested it on the original factory system (minus its original back box). I enlarged the Bosal inlet pipe a bit so that it fitted the MGR centre pipe, which I'd cut off at the bend.
In the end I didn't use the Bosal because I decided to replace the original centre section as well and the (now enlarged) Bosal doesn't fit the new Klarius centre. Btw, the Bosal is oval with twin outlets. It has a separate mounting bracket similar to the MGR original. |
5th April 2020, 19:43 | #13 |
incurable Rover addict
Rover 75 Saloon V6 2.5 1999 - Rover 25 1.4 2002 - Rover 214i cab 1994 - Rover P5b coupe 1968 Join Date: Sep 2017
Location: Bioule. South West of France.
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I'm still very pleased with my full SS MIJ Performance Exhaust line that was fitted in 2018.
No distressing or awful sound, looks as quiet as the genuine 19 years old one. And icing on the cake for a very fair price. It's a very bliss and being SS I assume it will last at least as long as the V6 2.5 engine...
__________________
Rover 75 V6 2.5 Auto Connie born 1 July 1999, 24 kOhms resistor, 10 kOhms manual starter, full E85, modified airbox, full derestricted SS exhaust line, power & torque remap -> 202 bhp
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6th April 2020, 13:21 | #14 |
Posted a thing or two
Rover 75 Saloon & Tourer Join Date: Mar 2013
Location: Wilmslow
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6th April 2020, 21:55 | #15 | |
MG ZT Join Date: Jan 2011
Location: Newcastle Upon Tyne
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Quote:
I took no notice of the people who thought £185 was an expensive price to pay to be a "guinea pig" Here is the write up, read it and weep gents, this exhaust is the exhaust to end exhausts in terms of quality and quietness LINK Brian P.S. it is of course a V6 pipe, I just chose to fit it to a diesel, and if you fancy one, then take a look HERE |
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7th April 2020, 11:27 | #16 |
Posted a thing or two
Rover 75 Saloon Join Date: Apr 2019
Location: Under the car
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£185 was around 3x more expensive than the non-stainless clamshell type that's still available, so it wasn't a bad price for stainless IMO.
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7th April 2020, 11:32 | #17 | |
MG ZT Join Date: Jan 2011
Location: Newcastle Upon Tyne
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Quote:
It may be worth dropping Jeremy (Jezzer 1) a line to see if he made any progress in having these imported, email him HERE Brian |
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7th April 2020, 13:23 | #18 | |
Posted a thing or two
Rover 75 Saloon & Tourer Join Date: Mar 2013
Location: Wilmslow
Posts: 1,509
Thanks: 433
Thanked 301 Times in 212 Posts
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Quote:
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11th April 2020, 08:01 | #19 | |
Posted a thing or two
Rover 75 Saloon Join Date: Apr 2019
Location: Under the car
Posts: 1,840
Thanks: 210
Thanked 244 Times in 221 Posts
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Quote:
No reply from Jezzer 1 to my PM of 9th April. |
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11th April 2020, 09:12 | #20 |
MG ZT Join Date: Jan 2011
Location: Newcastle Upon Tyne
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