Engine sound/upgrade question

[WIL84911]

Originally Posted by calling911

Thermal destroyers.. I like that..

I noticed something last night with my setup.. It actually sounds nice at idle (dont really give a crap about that) but when you get on it.. nothing.. its a non-event.. so its the opposite of what I want.. when I got on my 69T she rumbled like a v8. Real LOW tones...

I think Bursch 2 in 1 out is what you want. Or fabricated 2/2 Dynomax muffler.

[calling911]

Originally Posted by WIL84911

I think Bursch 2 in 1 out is what you want. Or fabricated 2/2 Dynomax muffler.

Question: why? Im about 90% sure my muffler was stock on my 69.. wouldnt I want that?

[javadog]

Bursch mufflers sound a lot different than the factory ones. In my opinion, this won't give you the sound you are looking for. I have no idea what a Dynomax would sound like.

I'd suggest that you keep looking for an early 911 muffler. Given that there have been a bunch of different mufflers used over the years and I haven't unraveled the meanings of all of the stampings on a given muffler, finding the one you want may take a little effort.

Happy hunting,
JR

[calling911]

Yep.. thats the plan.. there is one kinda beat up in classifieds.. wonder if it would be worth picking it up.. I have a welder and acetylene torches so not much I cant fix. I also bought a set of stock heat exchangers.. they should be here in a week or two.

I suppose I should hold out for a good muffler... the inner working may be all bent and messed up which could cause leakage.

Originally Posted by javadog

Bursch mufflers sound a lot different than the factory ones. In my opinion, this won't give you the sound you are looking for. I have no idea what a Dynomax would sound like.

I'd suggest that you keep looking for an early 911 muffler. Given that there have been a bunch of different mufflers used over the years and I haven't unraveled the meanings of all of the stampings on a given muffler, finding the one you want may take a little effort.

Happy hunting,
JR

[tobluforu]

Bursch sucks, IMO. Do what everyone has been suggesting, get some SSI's-they are the best route, period. It is then up to you on muffler choices. If you want that early crisp sound, get a stock banana muffler. If you want it a little louder, get a SS dansk muffler that has what I think is a 3 inch outlet (2 in, one out). If you want it even louder, go the MB route, 2 in, one out. If you want it to scream, get a dual outlet from dansk (tips come out the sides). And if you really want to piss the neighbors off, get the dual outlet sport muffler where the tips come straight out the back about a foot, then cut 6 inches off. If you want to go the custom route where you will need a muffler shop to weld it all up, go the dynomax, magnflow route which gives you a unique, but great sound.
When you are ready to install the HE's, post back and we can all help with the tools and procedures on how to get the old ones off.

[calling911]

Originally Posted by tobluforu

Bursch sucks, IMO. Do what everyone has been suggesting, get some SSI's-they are the best route, period. It is then up to you on muffler choices. If you want that early crisp sound, get a stock banana muffler. If you want it a little louder, get a SS dansk muffler that has what I think is a 3 inch outlet (2 in, one out). If you want it even louder, go the MB route, 2 in, one out. If you want it to scream, get a dual outlet from dansk (tips come out the sides). And if you really want to piss the neighbors off, get the dual outlet sport muffler where the tips come straight out the back about a foot, then cut 6 inches off. If you want to go the custom route where you will need a muffler shop to weld it all up, go the dynomax, magnflow route which gives you a unique, but great sound.
When you are ready to install the HE's, post back and we can all help with the tools and procedures on how to get the old ones off.

Thanks.. but due to budget constraints and a lack of need for pretty shiney stuff under my car I went with stock early heat exchangers.. based on what I read SSI's would not offer much better flow.. regardless.. this is what I chose.. I'll sand blast em and give em a high temp paint job when they get here.

I have a lift which will help with the removal but it looks like its gonna be a bear.. I may just cut off the thermal destroyers to get them out of the way.. I have a bad back and dont need the crap in my way when I go to do this.. Im guessing heat up each nut cherry red and take em off should be the procedure.. I may start this today or soon anyway because if I wait till the exchangers get here I will rush and break a damn stud.

[tobluforu]

I was able to get 11 of the nuts off by just spraying them with PB blaster every other day for a week, but two of the studs came out as well which is no biggie as you can get them at any good hardware store. One would not budge even with heat, so I dremeled that one off. If you have no need for the old ones, saws all the hell out of them. To install, I used a swivel 13mm socket attached to a long 1\4 extension, attached to a 1\4 to 3\8's adapter and a ratchet. This by far is the best tool to get them off if you have the old style HE and installing the new nuts as I did not use any other tool besides a long Allen socket for the barrel nuts.
Do not forget anti-seize and if you have some high temp sealant, use a thin layer on the new gaskets so they stay in place while mounting the HE's
Good luck

[RWebb]

classic early 911 sound = stock muffler; used will be cheapest so call a salvage yard near you

Monty is more rumbly and pretty spendy now, but Ben can surely fix you up with whatever you want

a dual cowhorn style will be louder; no 'extra' power

sport muffler can add a few but quite loud and you have to tune for it

[calling911]

So I'm done with phase one.. early heat exchangers:

My findings after about an hour of driving:

More power above 3500 RPM.. substantial? Seems like it anyway.. revs faster.

Exhaust note: Crisper, more defined.. can hear each cyl fire.. lower note..

But still not my 69t.. so on to phase 2.. early muffler....





Nuts came off with heat.. had to work some of them slowly and reheat a few times.. patience is required.. few studs spun out but no big deal.