The 240 exhaust system (non- turbo) seems two have two mufflers downstream from the cat converter. Some years ago the connection at the inlet to the muffler which sits behind the rear bumber did break and I did not notice a significant increase in the noise I replaced the connecting pipe which goes under the rear axle .

Now the female connection to the first muffler is broken. What would be the increase in noise if I was to replace that first muffler by an equivalent length of pipe, properly suspended to the frame .

Would there be a detrimental effect on the engine, the performance or the effectivenes of the catalytic converter if such a substitution took place because of changes in back pressure or other reasons ?

Richard's proposal is a good one. If you intend to remain stock, as I have on my succesion of 240's, I recommend a total cat-back system replacement.

The bend into the rear muffler gives out because it's a moisture collecting point and 2 to 4 miles drives morning and evening will kill it in a year. Then the rest of the system is marginal.

Get a system from VPI or FPCgroton or some other advertiser. Drop the old system off in one piece, and loosly assemble the new one. Put the new system on and tighten things up gradually. You will need a new cat gasket, some PB'Laster, and a way to raise the car safely. I drive the RF and RR wheels up on the ramps I usually use for oil changes.

Then you can take apart the old system at your leisure, although that is not what I consider a leisure activity.

Good Luck,

Bob

:>)

Hello,

Someone posted a similar message a few months ago and I will again recite the be-all and end-all of exhaust systems for a 240.

Get yourself a 240 Turbo rear muffler and the larger s-shaped tailipe extension. Then go to an independent muffler shop that can bend pipes for you. Get them to install the muffler and tailpipe, and make a pipe that goes from the back of the catalytic converter all along the underbody, using the supports where the resonator was, under the rear axle and around into the inlet of the Turbo muffler. The larger diameter of the Turbo system will allow for better flow in the system. The free-flowing design of the Turbo muffler will allow for a modest incease in power right off idle to about 5000 rpm(B230F's kinda mush out after that). There is no difference in volume or pitch from the tailpipe until you hit about 3000, so don't worry, you won't sound like one of those loosers in their Honda's with the tin cans for mufflers. And most importantly, there is no reduction in reliability or performance of the motor or other associated emissions control systems.

So the answer is yes... do it!!!! And no worries.

Happy Bricking!!!

Richard

87 245 DL 343,000 km
82 242 GLT 121,000 km

Richard,

Does this mean that you can also substitute the original Volvo cat back turbo exhaust components to a non-turbo car with no trouble or modifications ? I have a 1980 242 (B21F) and would like to do this but didn;t know if the single muffler turbo exhaust would line up and mate up to everything properly. In additon to dealer kits, I believe IPD also sells one for turbo applications but they don't mention if it will fit non-turbo cars as well, adn whether this has any effect on emissions testing.

Mike

It wouldn't have any effect on emissions, but the turbo exhaust is different- the cat is right up front close to the turbo, so the pipe behidn it is different.
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Rob Bareiss, New London CT ::: 86 244DL, 87 244DL, 88 744GLE, 91 244: 808K total