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Thread: Who makes a good R ST RSR muffler?

  1. #1
    Time Bandit Jens's Avatar
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    Question Who makes a good R ST RSR muffler?

    Any advice on sources is much appreciated.
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    Last edited by Jens; 09-15-2011 at 01:38 PM.

    Zitronengelb R1012 the RatBasterd
    RGruppe #183

  2. #2
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    M & k R muffler.
    These are great
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    Time Bandit Jens's Avatar
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    Thanks Raj. Magnus, do you know the outlets' o.d. off hand?

    Zitronengelb R1012 the RatBasterd
    RGruppe #183

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    Ben can give you any outlet size you desire. Good stuff, very lightweight.
    looking for 1972 911t motor XR584, S/N 6121622

  5. #5
    Time Bandit Jens's Avatar
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    Lew, I do love the sounds your car makes. How is it to live with? Any resonant droning at cruising speeds?

    Zitronengelb R1012 the RatBasterd
    RGruppe #183

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    Well, the 72 with early (rev1) m&k 911r muffler with 3 inch outlets had a lot of drone, I muted it down considerably, it was tolerable but still there...motor was a fairly stock '79 3.0

    The 73 has a very built up 3.0 with big carbs 46mm, je pistons, s cams.....but the muffler is a stock dansk with 3 in pipes grafted on by tre....baffles chopped, sounds great no drone....but the thing is heavy
    looking for 1972 911t motor XR584, S/N 6121622

  7. #7
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    How much time do you have Jens, I gave Marek the original drawing for the 901/22 exhaust and he said he can do it in steel 0.8 mm like the originals have been!
    Porsche 911 S 1971 Kremer race car

  8. #8
    M&K mufflers are light but noisy ... annoyingly so, on my opinion.

    If I were you I'd modify a new Dansk.
    -Marco
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  9. #9
    Quote Originally Posted by sonett43 View Post

    The 73 has a very built up 3.0 with big carbs 46mm, je pistons, s cams.....but the muffler is a stock dansk with 3 in pipes grafted on by tre....baffles chopped, sounds great no drone....but the thing is heavy
    Do you have any pict of the modified Dansk? I was thinking about having that done.
    1997 993 C4S, Not totally stock
    2015 GTI
    1991 E30 M3
    1970 911T, Lilly. Slate Gray 3.2ss PMO etc Sold!
    http://forums.pelicanparts.com/porsc...ect-lilly.html

    Early S Register Member #1386

  10. #10
    Hi Jens, it's really about what it is you want in terms of noise and/or noise suppression, the standard Dansk RSR twin outlet rear box is a straight fit but only comes in mild steel. Noise tested with racing headers comes in at about 112db.

    Here in the UK we have developed this, a switchable RSR exhaust modelled on the Dansk version but with flaps, so it can run straight through 'open' pipes or flip the lever and it runs through the baffled box and comes in just under 105db. Just testing the stainless steel version as we speak. Explained here:

    http://www.ddk-online.com/phpBB2/vie...haust&start=15
    cheers, Mike
    Member#1664
    1972 911 S/RSR to Martini Prototype specification
    http://www.ddk-online.com/phpBB2/viewtopic.php?t=15294

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