Bosal Bavaria muffler on a coupe ?

J

John Buchtenkirch

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I’m just curious if anyone has used or attempted to use a Bosal #247792 front muffler (it’s for the 3.0 Bavaria) on a coupe ? I realize the coupe is shorter (and the muffler is likely too long) but possibly it could work by eliminating the center silencer and fabricating a pipe for between the front & rear mufflers ? Any input good :grin: or bad :( on this is appreciated.

Right now I’m actually fabricating stainless exhaust for the movie production flatbed I’ve been working on for the last ½ year so I don’t need another major exhaust project but I’d like to do something a little quieter than hanging a hot rod glass-pack on the coupe. Eventually after I swap in the S38 engine I’ll fabricate something trick in stainless but for right now I’m admittedly just looking to get by. Thanks ~ John Buchtenkirch

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Well it doesn’t make any difference if the Bavaria muffler can be made to fit or not. Even though “Stan’s Discount Bimmer Parts” lists the Bosal brand Bavaria front muffler as being available it just isn’t anymore so I’m unfortunately stuck :( with welding on a pair of glass-packs to replace the front & center mufflers. I guess the day of reasonable aftermarket mufflers being available for the early 6 cylinder cars is now history, except that I believe that Bosal still has the rear muffler available --- if you might need one I don’t suggest procrastinating. ~ John Buchtenkirch
 
bav exhaust

Classic garage.

Front resonator is about $125. Center is $59.

Can't use the rear unless you modify from the straight through inline to traverse for the E9 which is what everyone does now if after market. None of the bav will be a bolt on though, but the front resonator has the 2 to 1 if you're objection is the single glass pack with a Y or doubles.
 
61porsche said:
Classic garage.

Front resonator is about $125. Center is $59.

Can't use the rear unless you modify from the straight through inline to traverse for the E9 which is what everyone does now if after market. None of the bav will be a bolt on though, but the front resonator has the 2 to 1 if you're objection is the single glass pack with a Y or doubles.
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OUCH, I wish you had posted that source a few days ago. After looking on the internet for several hours and another hour looking thru the Walker catalog I threw in the towel and ordered the glass-packs. I feel like I’m doing something I did when I was 16 :oops:, sort of retrogressing :oops: so to speak. Where is Classic Garage located so I can find them on the internet ? Thanks. ~ John Buchtenkirch
 
61porsche said:
classicgarage.com
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Darn it :cry::cry::cry: I located them http://classicgarage.com/ right up in Brewster, NY. Only a little over hours drive from me as long as I avoided rush hour traffic. That’s a real heart breaker particularly after I talked to the sales people from World Pac and my local parts store, It was right under our noses all along. ~ John Buchtenkirch
 
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I've had a Supersprint exhaust on my CSi for 25 years, but it's getting weak. I am aware that the E9 rear muffler mounts in a transverse fashion whereas the E9 muffler mounts longitudinally. Can someone fill me in on the details of what's being discussed here? Classicgarage.com has five options under 3.0 & Bavaria. John, which one are you regretting not having bought?

--BMW Bavaria - Center Resonator and Muffler Set

--BMW 2500, 2800, Bavaria - Rear Muffler

--BMW Bavaria, 3.0S - Exhaust

--BMW Bavaria - Center Exhaust

--BMW 3.0S, 3.0Si - Center Resonator
 
I think John was just looking for an alternate exhaust to use temporarily until he had time to fab a proper SS one.

Parts of the Bav exhaust are similar to a stock E9. The front resonator can be adapted. Depending on your downpipes or headers, it would be normal to do anyway.( mating)

Then the question becomes the small resonator in the middle. Like Chris, I don't see the benefit unless you're staying stock.

To use a nonstock rear muffler is pretty easily done. But the exhaust gets rerouted to connect at the end of the muffler rather than into the side as the stock muffler does.

Like you I have an Ansa system that's showing some age, but still serviceable. So I have been interested in a solution that works for me.

I really like the Coupeking exhaust, it appears to be larger in diameter and less restrictive, but would be perfectly happy if it were aluminized steel just as an OEM exhaust is. There are plenty of threads and pictures, sizes of "cans" have been discussed before, and even though I have a welder, etc. the new SS steel clamps look slick to me and don't rust.

A non standard exhaust isn't for everyone, but my research says I can have an exhaust made up for something in the $275-350 and get happy about that, a little less restrictive, and probably last a very long time based on how I drive my E9. Best of all to me, the next caretaker can remove it easily and do whatever. I intend to use the stock mounting points to facilitate the fab.
 
I removed my center resonator and really like the resulting subtle throaty exhaust note.
 
I drove up to Brewster today and picked up a front muffler for a Bavaria and a center resonator for a coupe for $185. I’m 99% sure I can make the Bavaria muffler work, I will update on that soon. He still has 2 or 3 more Bavaria mufflers and a few coupe center resonators if anyone else is interested. They are NOS so when their gone it’s for good. Many thanks to 61Porsche for the tip, I’m very happy :D:D:D:D about not having to use glass-packs. ~ John Buchtenkirch
 
I cut out my exhaust last night. As you can see in the photo (my original exhaust is the rusted one in the middle) all I have to do is cut off the Bavaria tail pipe after the muffler and weld on the coupe center resonator / silencer to make it all work. Nothing that anyone with a little exhaust experience & welding skills shouldn’t be able to handle and hopefully tomorrow I will. ~ John Buchtenkirch
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I got the exhaust in yesterday, it was pretty much a cake walk welding job but unfortunately :cry: it didn’t get rid of that one annoying rattle in my car. If any of you coupe owners order the Bavaria exhaust from Tim at Classic tell him to leave an inch protruding but to cut the pipe off of the backside of the Bavaria muffler, you don’t need it (believe me) and then the muffler shouldn’t need an oversized shipping box. ~ John Buchtenkirch
 
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