911 Posted 26July, 2021 Report Share Posted 26July, 2021 Hi everyone, I'm helping a friend who is wanting to purchase an exhaust system for his 3.2. Ideally a straight bolt on. The car currently has a standard exhaust system. Any recommendations and feedback would be great. New or used is fine. Quote Link to comment Share on other sites More sharing options...
Coastr Posted 26July, 2021 Report Share Posted 26July, 2021 Are they looking for improved sound or improved performance? A new muffler works great on these cars and gives nice noise. A whole set of headers and muffler can open up performance, especially with a performance chip. Depends on budget and goals. Note that most performance exhausts lose the heat exchangers so if they want heat/defrost on their car that changes the equation as well. Quote Link to comment Share on other sites More sharing options...
911 Posted 27July, 2021 Author Report Share Posted 27July, 2021 It's more for the sound. Performance wise won't be anything major from an exhaust system I'd think anyway. Noticeable maybe, but nothing major. Correct me if I'm wrong. The car is completely standard at present and will be left that way, bar the exhaust. Quote Link to comment Share on other sites More sharing options...
Mike D'Silva Posted 27July, 2021 Report Share Posted 27July, 2021 Sounds like he just wants a bolt on muffler. Monty Dansk It will sound like it has 25 extra hp. prigg and tomo 2 Quote Link to comment Share on other sites More sharing options...
911 Posted 27July, 2021 Author Report Share Posted 27July, 2021 34 minutes ago, Mike D'Silva said: Sounds like he just wants a bolt on muffler. Monty Dansk It will sound like it has 25 extra hp. Pretty much. Is there much of a price difference between new and second hand? I've also noticed the 2 in 1 out, one in one out etc. Quote Link to comment Share on other sites More sharing options...
Philbee Posted 27July, 2021 Report Share Posted 27July, 2021 Yours is 1 in1 out, Dansk, Monty have that... also look at M&K and scart if you have plenty of $$$ if you want 2 in, you’ll need to change more than just a muffler. For extra consideration I also upgraded to a sports cat... 100cell from 800 I think it is... Quote Link to comment Share on other sites More sharing options...
911 Posted 27July, 2021 Author Report Share Posted 27July, 2021 Thanks @Philbee Could even just run a cat bypass pipe. My old car had one and that sounded quite good. I'll let him know. Either Monty, M&K or Dansk 1 in 1 out. Quote Link to comment Share on other sites More sharing options...
Merv Posted 27July, 2021 Report Share Posted 27July, 2021 I used the Monty-Australian product- on my 88. Great construction, nice sound from the one-out and lighter than the original. Bugs77 and 911 2 Quote Link to comment Share on other sites More sharing options...
Mike D'Silva Posted 27July, 2021 Report Share Posted 27July, 2021 Another one you should definately look up, is the Mille Miglia that Lambros at Hitech Mufflers produces. I cannot comment on the performance increase if any, however I am a BIG fan of the exhaust note it produces. https://millemiglia.com.au/porsche-exhausts/ Merv, 911 and Bugs77 2 1 Quote Link to comment Share on other sites More sharing options...
Peter M Posted 27July, 2021 Report Share Posted 27July, 2021 On 13/08/2019 at 20:09, Peter M said: Exhausts for Carrera 3.2's You would think after selling 76,000 3.2's there would be a ready source of accurate information on what are the best exhausts to use on these cars? Except for Steve Wong's infamous comparison table - http://forums.pelicanparts.com/4082599-post49.html - that he later declared as inaccurate, there was nothing definitive that I could find. After reading a million posts and dyno charts, this is what I uncovered: Porsche increased the size of the exhaust primaries from the earlier 1 1/2 inch OD to 1 5/8 inch with the introduction of the 3.2's in 1984. SSI's having only 1 1/2 primaries aid torque below around 2,800rpm and moderate it above. Cabin heat still works well The standard 3.2 headers actually perform very well and any sensible owner would just change the primary muffler/ catalytic converter to a straight through pipe and change the main muffler to one of the better brands like Monty, M&K etc. Eisenmann do a 1 5/8 inch version of SSI's in two versions ( F model fits the generic style Porsche 2 in rear muffler or the G model that has a Eisenmann propriety catalyst and rear muffler) but are eye wateringly expensive and there has been a number of posts on Pelican about poor fitment and fabrication. I originally intended to only change my pistons and cylinders to the higher Euro spec compression ratio and run SSI's and actually bought a set of both. I do like the SSI look and sound. However a run up the grade of the Oxley Highway one Saturday afternoon inspired a desire for more horsepower as I couldn't keep up with a stock 996 let alone a Gallardo so these items were sold off and a set of 3.4 pistons purchased. Since heat was important to me I purchased a set of BBE stainless 1 5/8 inch primary headers with hot boxes that I had modified to work with the standard 3.2 air distribution pipe to keep a neat look and to avoid the 10 miles of flexible hosing that always makes me think of the "Danger Will Robinson!" robot in Lost in Space. I topped it off with a Dansk Motorsport 2 in/1 out muffler as I got it cheapish from Design911 but would have bought an M&K otherwise. EDIT: Some interesting comments on how good the standard 3.2 exhaust discussed here: http://forums.pelicanparts.com/porsche-911-technical-forum/1074815-88-3-6-conversion-planning-exhaust-advice-requested.html Wangan, From my experience I would suggest you keep the standard headers as they perform very well, replace the small muffler with either a straight through pipe or sports cat (for the post '86 cars) and install either a Monty or M&K 1 in/1 out main muffler. Just be a bit wary of the 2 out mufflers as they often suffer drone problems. Merv, tomo and 911 3 Quote Link to comment Share on other sites More sharing options...
Mike D'Silva Posted 27July, 2021 Report Share Posted 27July, 2021 Quote Link to comment Share on other sites More sharing options...
Coastr Posted 27July, 2021 Report Share Posted 27July, 2021 well I love my 1-in-1-out monty that I bought off someone here- I forget who, but it was money well spent. Oldskl60, Merv and 911 3 Quote Link to comment Share on other sites More sharing options...
911 Posted 27July, 2021 Author Report Share Posted 27July, 2021 29 minutes ago, Peter M said: Wangan, From my experience I would suggest you keep the standard headers as they perform very well, replace the small muffler with either a straight through pipe or sports cat (for the post '86 cars) and install either a Monty or M&K 1 in/1 out main muffler. Just be a bit wary of the 2 out mufflers as they often suffer drone problems. Thanks @Peter M He's pretty set on a monty, or an M&K after a bit of reading on pelican parts and a few YouTube videos. I guess I'll keep a look out. If anyone's considering selling, please flick me through a PM. Are there any recommendations for bypass pipes? 31 minutes ago, Mike D'Silva said: Thanks Mike. Sounds great in the video you've sent. Can't find any pricing on their site. Are you still able to source M&K mufflers new? Quote Link to comment Share on other sites More sharing options...
Peter M Posted 27July, 2021 Report Share Posted 27July, 2021 Yes: 911 | M&K Exhaust (mkexhaust.com) Quote Link to comment Share on other sites More sharing options...
Doish13 Posted 27July, 2021 Report Share Posted 27July, 2021 Have an M&K good craftsmanship and sound … then again a resonator delete / straight through for around $70 secondhand does wonders too Peter M and rminc 2 Quote Link to comment Share on other sites More sharing options...
autojack Posted 27July, 2021 Report Share Posted 27July, 2021 I've been considering a Bisimoto exhaust for my 3.2: https://bisimoto.com/product/bisimoto-spec-porsche-911-pulse-chamber-1978-1987/ You can find some threads about it on Pelican, gets good reviews there. Quote Link to comment Share on other sites More sharing options...
LeeM Posted 27July, 2021 Report Share Posted 27July, 2021 I can't remember who, but I reckon someone here bought one of them a while ago @autojack Quote Link to comment Share on other sites More sharing options...
sus911 Posted 27July, 2021 Report Share Posted 27July, 2021 Just FYI and a bit of a left field alternative, I changed to 993 Bischoff heat exchangers (1 5/8”) with an M&K 2 in 1 out. The idle sound is a bit gnarly at idle but barely noticeable when you’re running and definitely no drone. Have a Steve Wong 911 Chips in it also. It runs very strong and dyno confirms this. I don’t have the figures with me now but from memory were RWHP so difficult to interpolate to meaningful crankshaft HP. The weight saving is nothing less than massive. Quote Link to comment Share on other sites More sharing options...
911 Posted 27July, 2021 Author Report Share Posted 27July, 2021 1 hour ago, LeeM said: I can't remember who, but I reckon someone here bought one of them a while ago @autojack They sound alright from the YouTube videos Watch "How does the Bisimoto Pulse chamber work?" on YouTubehttps://youtu.be/5lbQU0MSkiw Quote Link to comment Share on other sites More sharing options...
OBRUT Posted 27July, 2021 Report Share Posted 27July, 2021 23 minutes ago, wangan said: They sound alright from the YouTube videos Watch "How does the Bisimoto Pulse chamber work?" on YouTubehttps://youtu.be/5lbQU0MSkiw I had one that I sold on to @JonoF - veeeeery loud. JonoF and LeeM 2 Quote Link to comment Share on other sites More sharing options...
autojack Posted 27July, 2021 Report Share Posted 27July, 2021 There is an optional sound arrestor which cuts down the noise if required. Were you using that? Quote Link to comment Share on other sites More sharing options...
rminc Posted 31July, 2021 Report Share Posted 31July, 2021 On 28/07/2021 at 09:31, OBRUT said: I had one that I sold on to @JonoF - veeeeery loud. I've heard an M&K and I really liked it. I'd consider buying one. Bisimoto looks interesting. @OBRUT, do you know how it compares in terms of loudness compared to you're standard Monty, M&K and Dansk? Quote Link to comment Share on other sites More sharing options...
Philbee Posted 31July, 2021 Report Share Posted 31July, 2021 1 hour ago, rminc said: I've heard an M&K and I really liked it. I'd consider buying one. Well, funny you mention M&K, someone on the forum, don’t who he his... wrote a lengthy sometimes boring 🙂 but with a happy ending popping on a glorious M&K muffler.... even added a before and after vid. Go to the last page .... M&K soul music! Quote Link to comment Share on other sites More sharing options...
Merv Posted 31July, 2021 Report Share Posted 31July, 2021 The Monty gives some authority without drone. Stepo 1 Quote Link to comment Share on other sites More sharing options...
OBRUT Posted 31July, 2021 Report Share Posted 31July, 2021 2 hours ago, rminc said: I've heard an M&K and I really liked it. I'd consider buying one. Bisimoto looks interesting. @OBRUT, do you know how it compares in terms of loudness compared to you're standard Monty, M&K and Dansk? I never fitted it. Didn’t like the look. Quote Link to comment Share on other sites More sharing options...
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