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Muffler size

Discussion in 'Volvo Forum' started by me myself and I, Aug 17, 2014.

  1. Aug 17, 2014 #1
    me myself and I

    me myself and I Heavy Load Member

    715
    308
    Oct 5, 2009
    vernon hills,Il
    0
    Im trying to replace it on '07 780 with Walker Megaflow. I was told its 9in diameter, but it looks to me like its a 10in. Anybody knows?
     
    me myself and I, Aug 17, 2014
    me myself and I, Aug 17, 2014
    #1
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  3. Aug 17, 2014 #2
    Flightline

    Flightline Road Train Member

    2,343
    1,162
    Oct 1, 2011
    Almost There
    0
    The common size is 10" outside diameter with 5" inlet and outlet.
    Most 9" diameter mufflers are on midsize trucks with 4" inlet.
    Though Volvo trucks are different in so many ways.
     
    Flightline, Aug 17, 2014
    Flightline, Aug 17, 2014
    #2
  4. Aug 21, 2014 #3
    car11220

    car11220 Bobtail Member

    28
    3
    Jul 30, 2012
    Brooklyn, NY
    0
    My 2007 670 is 10"
     
    car11220, Aug 21, 2014
    car11220, Aug 21, 2014
    #3
  5. Aug 22, 2014 #4
    v6killer

    v6killer Medium Load Member

    446
    121
    Dec 6, 2010
    ChicagoLand
    0
    Yes it 10 inch

    the best place to buy Walker muffler. Summit racing. Bought mine for. 109.00 that was ship to my door.
    Comes with a 5 year Rust through warranty
     
    v6killer, Aug 22, 2014
    v6killer, Aug 22, 2014
    #4
  7. Aug 23, 2014 #5
    me myself and I

    me myself and I Heavy Load Member

    715
    308
    Oct 5, 2009
    vernon hills,Il
    0
    Thanx. I am going to get it from Summit Racing. Cant beat the price
     
    me myself and I, Aug 23, 2014
    me myself and I, Aug 23, 2014
    #5
  8. Jan 25, 2015 #6
    dunchues

    dunchues Medium Load Member

    537
    940
    Mar 23, 2012
    new brunswick
    0
    Still the same price, mine arrived in 2 days. Unbeatable.
     
    dunchues, Jan 25, 2015
    dunchues, Jan 25, 2015
    #6
  9. Feb 7, 2015 #7
    Center Lane Transport

    Center Lane Transport Bobtail Member

    5
    1
    Feb 7, 2015
    0
    How much of a difference will this new muffler make in terms of Horsepower ans MPG? Curious because I'm thinking of upgrading my 98 Volvo with a new exhaust pipe.
     
    Center Lane Transport, Feb 7, 2015
    Center Lane Transport, Feb 7, 2015
    #7
  10. Feb 8, 2015 #8
    KB3MMX

    KB3MMX Road Train Member

    3,057
    2,573
    Dec 29, 2014
    Orrstown, PA
    0
    I'm also interested in changing my muffler this summer when I change the pipe under the cab.

    Should I consider changing my 5" single exhaust to 6" size for decreased resistance and fuel mileage improvement?


    Thanks
     
    KB3MMX, Feb 8, 2015
    KB3MMX, Feb 8, 2015
    #8
  11. Mar 18, 2015 #9
    ROADONE

    ROADONE Bobtail Member

    16
    5
    Mar 16, 2015
    0
    ROADONE, Mar 18, 2015
    ROADONE, Mar 18, 2015
    #9
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