Volvo RWD 700 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 8/2016 700 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Muffler-Exhaust system 700 1990

I'm looking to replace the muffler on a 740, 16-valve. Is this muffler different from the standard 740? Should I consider replaceing the Cat with 112K mileage? Any standard tips?








  •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

    Re: Muffler-Exhaust system 700 1990

    Go with the stock Volvo system. Comes in two parts. One is a box with all the mufflers and pipes. The other part is a bag with all the hanger hardware specific to your car. Everything fits! No BFH adjustments needed. The connections are not banged up, so everything slips together.

    When the pipe between the two mufflers on my '87 745T let go 3 1/2 years ago, it took me about 45 minutes to remove the old system and install the new. It was actually a pleasure considering the grief exhaust systems normally give me. BTW, I do not have a torch to cut the old stuff out. Just put a cut-off wheel on my Drumel tool and carefully slit open the pipe between the cat and front muffler. System has been on the car for 3 1/2 years and looks fine considering the salt laden winters we get here in Rochester, NY. My old 240s got usually 2 winters out of a muffler shop system. Granted 240 systems by design tended to be more prone to decay, but the muffler shop exhaust systems were made out of C%$&@.

    Good luck,








    •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

      Re: Muffler-Exhaust system B234F 700 1990

      Further to Gary's comments. I just replaced the exhaust system on my B234F using the OEM kits -straightforward job, no surprises. Note that the replacement kit for the B234F uses slightly bigger diameter pipes than the original so you are pretty much stuck replacing the whole system back of the cat (hence the Volvo kit). As I recall from the box label, the B234F, B230FT and B280F all share the same exhaust replacement kit so it should be readily available at most dealers. I don't believe the ipd catalogue shows any B234F exhausts listed, but you might well find their B230FT systems will fit.

      From years of experience with generic muffler shops and from many comments made here on the 'Board, there is simply no question that Volvo OEM mufflers are good quality and, in the long run, probably well worth any extra initial expense. The mufflers (only) are lifetime guaranteed to the purchaser at any dealer, even if you install it yourself. The only other sensible option would be a performance muffler system at considerably more expense.

      Here's a couple of bonus tips:

      The muffler hanger straps seem to be the weak spot in the 740 muffler system -relatively thin stock prone to rusting through. Anything you can do to add protection here will help. Just don't use anything that will fry -undercoat is absolutely not the right stuff. I had some high-heat (BBQ) paint handy and used it -there's probably even better ideas.

      The original tail piece is a half-sporty looking, double walled, black painted pipe that seems to last forever. The replacement tail piece is rather plain (ie. wimpy) by comparison. I was able to retrofit the original one on the new muffler by slitting the muffler end so it could be made to fit over the old pipe (as opposed to being inside for the new). Cut your expansion slits so they won't create a gap if lined up with the slits on the old tail pipe. A hacksaw blade in a portable jigsaw makes quick work of this. You may need to compress the inner pipe and expand the outer pipe to get a good fit -hand tools will do the job.








  •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

    Re: Muffler-Exhaust system 700 1990

    I always used systems from the dealer on my 745. Come with a life time warranty on the muffler and the pipes are really a good value. The second set of mufflers was free and the pipe over the axle was about $30 as I remember and it was probably good for another couple years but I didn't want to risk it.

    I think the system on the 960 is stainless? Still looks new after 74K and 4 years.








  •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

    Re: Muffler-Exhaust system 700 1990

    Don't replace the cat unless it's plugged...waste of money.

    The cat on our 87 760T has over 210k on it with an overboosted engine and still meets emission requirements (and still hauls the beast to over 120mph).

    Standard tip is to consider replacing the entire exhaust system from the cat back with a stainless steel system if you can find one...then you shouldn't have to do it again, ever. If you choose to replace just the muffler, I can just about guarantee you that you will be replacing another pipe or resonator within two years.

    I've found one source on the web for turbo 3" stainless steel header-back systems, including a new cat, for about $750 which I consider steep because I don't need to replace the cat (although if I put on a T3/04 turbo, THEN the 3" pipe would do some good...hmmm).

    The stock volvo exhaust system kit is kind of hard to beat.







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.