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> GB -6 mufflers in stainless
Steve
post Apr 23 2018, 08:50 AM
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Just curious.. how are these coming along?
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mb911
post Apr 23 2018, 09:10 AM
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QUOTE(Steve @ Apr 23 2018, 06:50 AM) *

Just curious.. how are these coming along?



Steve brackets shipping today..
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Mueller
post Apr 23 2018, 09:16 AM
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QUOTE(mb911 @ Aug 8 2017, 06:37 PM) *

So after all of the testing we have good feed back. The mufflers are quiet as stock and flow a bit better over stock as larger id tubing internally. We still have to tweak the tail pipe locations and may ask for a little assistance with that. I am going to offer 10 of them at 650 for intro pricing and then 900 after that. They will be made 100% of 304 stainless weighs 18lbs, 2.5 dia tail pipe, installation kit will be included, shipping will be extra and to be determined.

Please let me know if you have any questions.



While looking at muffler options for my little 1.8 I stumbled upon this thread again.

My pea brain is struggling with the flow on muffler internals. Can you do a little MS paint since to me it looks like the exhaust would just want to directly exit the tail pipe and that the baffling would do nothing or am I over thinking the tubes and perforations?


PS, do you do any consulting if someone wanted to build their own GT'ish /4 muffler with twin outlets? (asking for a friend, hahaha)
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mb911
post Apr 23 2018, 11:51 AM
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QUOTE(Mueller @ Apr 23 2018, 07:16 AM) *

QUOTE(mb911 @ Aug 8 2017, 06:37 PM) *

So after all of the testing we have good feed back. The mufflers are quiet as stock and flow a bit better over stock as larger id tubing internally. We still have to tweak the tail pipe locations and may ask for a little assistance with that. I am going to offer 10 of them at 650 for intro pricing and then 900 after that. They will be made 100% of 304 stainless weighs 18lbs, 2.5 dia tail pipe, installation kit will be included, shipping will be extra and to be determined.

Please let me know if you have any questions.



While looking at muffler options for my little 1.8 I stumbled upon this thread again.

My pea brain is struggling with the flow on muffler internals. Can you do a little MS paint since to me it looks like the exhaust would just want to directly exit the tail pipe and that the baffling would do nothing or am I over thinking the tubes and perforations?


PS, do you do any consulting if someone wanted to build their own GT'ish /4 muffler with twin outlets? (asking for a friend, hahaha)



Its actually a direct copy of the porsche design in every way.

It has to flow through the plate with holes 1st then flows from there

Regarding building custom muffler is no problem and maybe I could provide a few parts if you want to do some homework
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maf914
post Apr 23 2018, 04:31 PM
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Mueller and Mb911, Does this picture help? It has been bouncing around the site for a while.


Attached image(s)
Attached Image
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Mueller
post Apr 24 2018, 11:05 AM
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QUOTE(maf914 @ Apr 23 2018, 03:31 PM) *

Mueller and Mb911, Does this picture help? It has been bouncing around the site for a while.



thanks, it took me a few seconds to map it all out, i think I figured it out (IMG:style_emoticons/default/smile.gif)
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Rav914
post Apr 26 2018, 06:05 AM
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Hi Ben,

If I may ask, where do you get your supplies? I'm going to attempt to assemble a similar muffler for my 1911cc with stock HE's. I have some time off from work and want to test my welding skills.

There's a muffler shop nearby that will most likely sell me the smaller diameter tubing for the internals. So, I'd be looking for the large diameter pipe, the bulkheads and drilled/slotted pipe. Thanks,

Nate

btw, I've had your mufflers on a '65 911 and a '74S I used to own. I bought them in '06. I thought they were fantastic.
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mb911
post Apr 26 2018, 06:29 AM
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QUOTE(Rav914 @ Apr 26 2018, 04:05 AM) *

Hi Ben,

If I may ask, where do you get your supplies? I'm going to attempt to assemble a similar muffler for my 1911cc with stock HE's. I have some time off from work and want to test my welding skills.

There's a muffler shop nearby that will most likely sell me the smaller diameter tubing for the internals. So, I'd be looking for the large diameter pipe, the bulkheads and drilled/slotted pipe. Thanks,

Nate

btw, I've had your mufflers on a '65 911 and a '74S I used to own. I bought them in '06. I thought they were fantastic.



Nate we have the parts laser cut and spun locally .. Call me or email a list and I will see what I can do..
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Rav914
post Apr 27 2018, 10:00 AM
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Thanks Ben, email sent.
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mb911
post Aug 1 2018, 02:52 PM
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Here is a 2 in 2 out that I built for a customer and went a different direction. 950 Retail 750 shipped in lower 48.Attached Image
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mb911
post Feb 26 2019, 06:53 PM
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Going to do another round of these quiet mufflers. Let me know if anyone is interested.
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roblav1
post Feb 26 2019, 08:29 PM
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I might be in for a complete exhaust as well as oil tank. Checking out your site now.
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Luke M
post Mar 1 2019, 08:30 AM
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(IMG:style_emoticons/default/icon_bump.gif)

Ben,

Sent you a pm on this.
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mb911
post Mar 17 2020, 06:48 PM
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QUOTE(mb911 @ Aug 8 2017, 05:37 PM) *

So after all of the testing we have good feed back. The mufflers are quiet as stock and flow a bit better over stock as larger id tubing internally. We still have to tweak the tail pipe locations and may ask for a little assistance with that. I am going to offer 10 of them at 650 for intro pricing and then 900 after that. They will be made 100% of 304 stainless weighs 18lbs, 2.5 dia tail pipe, installation kit will be included, shipping will be extra and to be determined.

Cairo94507(Michael) is 1st on the list so 1 more spot.(deposit )
914forme (Stephen)
Steve ( aka steve;)( deposit)
Live free +drive (jon) (deposit)
Rktmn247 (kent) (deposit)
MEpstein(Mark) doesn't count for group buy
Restore2seater (Pat)(deposit)
Dion
Marv E
Mark Howard.
Jmuriz (Nathan)



Deposits will be 300.

I will post pictures as we progress just as I did with the heat exchangers project with delivery in November.. Please let me know if you have any questions.



I wanted to bump this so others could see a proper internal baffle design
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Steve
post Mar 19 2020, 02:09 PM
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I love your quiet muffler and your heat ex-changers. That and my 916 trans, makes my 3.2 conversion feel like a factory built car.
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roblav1
post Mar 19 2020, 06:02 PM
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Ben, Any good deals on mufflers lately? Engine is in the car and expect to attempt to start it within the month.
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scallyk9
post Mar 19 2020, 08:53 PM
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QUOTE(mb911 @ Aug 1 2018, 01:52 PM) *

Here is a 2 in 2 out that I built for a customer and went a different direction. 950 Retail 750 shipped in lower 48.Attached Image


I'd just like to comment that this particular custom muffler is incredible. I finally got it installed along with Ben's 1.625" heat exchangers on my 1974 3.2L conversion and I can actually feel the difference. It is a bit loud as Ben had cautioned but the sound is phenomenal and it obviously has a well conceived design and flow. Even the guys at the shop have been raving about it.
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