Durandal25
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I'm still trying to figure out what to go with on the MN Gold build. Stock fit would be best........reproduction
Does 0,5" matter? :)
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68Moparmaniac
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Stainless anything has always been expensive. What I hate is the different grades out there. Some have a lot of steel content and will rust. The stronger a magnet will stick to it the more steel is in it.
You'll like your choice[/QUOTE
300 series stainless is what you want for your exhaust. It's non magnetic and extremely corrosion resistant and handles heat great. I believe most stainless exhaust pipe is made from 304 stainless. 400/500 series stainless are more of a magnetic stainless, these are often used for heat treatable applications.
It's more expensive but it will be the last exhaust pipes you'll ever need to buy..
Wietse
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Yeah, if you are willing to pay the price you have to stick to 316 SS and use 320+ grade for welding rod material.
These TTI exhausts are aluminzed steel i believe which should give some protection for several years before getting corrosion.
Since our cars will rarely see road salt i think the biggest enemy comes from the inside.
As long as you make sure you heat the engine and axhaust up every time you run it all condensation inside should evaporate.
If moisture stays inside you can expect it starts corrosion inside mufflers and the “low” spots on the piping.
Therefore using SS is for life, then again, guess this exhaust will live for 15-20 years if treated correct.
These TTI exhausts are aluminzed steel i believe which should give some protection for several years before getting corrosion.
Since our cars will rarely see road salt i think the biggest enemy comes from the inside.
As long as you make sure you heat the engine and axhaust up every time you run it all condensation inside should evaporate.
If moisture stays inside you can expect it starts corrosion inside mufflers and the “low” spots on the piping.
Therefore using SS is for life, then again, guess this exhaust will live for 15-20 years if treated correct.
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What is used on the more modern stuff? It rarely snows here but the exhaust on my 95 Dakota is original but this thing has been short tripped to death and the system is still solid. Imo, it's the lead that used to be in the fuel that made them rot out fast or the stuff back in the 60's and 70's was junk or both.
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I would go 2 1/2. If u had 2 inch or bigger headers then maybe 3 inch then u could take advantage of better flow, but u also need the heads to flow the big numbers to warrant bigger headers and pipes. Kim
Wietse
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Just came home today, working my way through all airports and dodging the corona virus. 
The world has changed people....what a mess.
Anyway, unboxed the just received exhaust system.
TTI did get an big A for packing, all material well packed and they must have used a full roll of this inflatable plastic filling...
The whole kit looks very good, nice finish and a good set of mufflers as i can see.
I did was a bit disappointed initially as i was expecting a set of polished tips to be with the set.
But after checking i did find they need to be ordered separate, my bad and no issues.
But what is the original style exhaust tip for a '69 Coronet R/T, i believe they are round and angle cut?
I kinda like the square ones that come on the Chargers as well.
But i think i will find something that should come as from factory.
The world has changed people....what a mess.
Anyway, unboxed the just received exhaust system.
TTI did get an big A for packing, all material well packed and they must have used a full roll of this inflatable plastic filling...
The whole kit looks very good, nice finish and a good set of mufflers as i can see.
I did was a bit disappointed initially as i was expecting a set of polished tips to be with the set.
But after checking i did find they need to be ordered separate, my bad and no issues.
But what is the original style exhaust tip for a '69 Coronet R/T, i believe they are round and angle cut?
I kinda like the square ones that come on the Chargers as well.
But i think i will find something that should come as from factory.
Aeronet
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Why not run 3" from the headers through the muffler and neck down to 2 1/2" over the axle? As the exhaust gasses cool you don't need larger pipe. That way you could also maintain good velocity through the system.
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Nah, in the advent of the emissions age, makers upgraded the materials used in exhaust systems because the
feds mandated emissions warranties had to be a certain length of time - which included all of the exhaust systems.
They DO last longer than the old mild steel exhausts used to - a lot longer.
They also added a bunch to the price of every vehicle. Yay progress!
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Imo, it's a welcome mandate lol. Seems like I was always replacing exhaust systems and unless things were being upgraded, it wasn't a welcome chore.....kinda like brakes!
Wietse
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Just started installing the exhaust, instructions mention to start from the back.
I got stuck straight away because i cannot see the correct location where the tip hanger should be bolted on the frame.
There are some holes which are not near the location by looking at the hanger bracket on the exhaust pipe.
Anyone a picture of how this should be mounted by any chance?
The complete exhaust is just hanging below the car right now, just need to line up and tighten bolts and clamps but before i do so i better know how/where to install the tip hangers..
I got stuck straight away because i cannot see the correct location where the tip hanger should be bolted on the frame.
There are some holes which are not near the location by looking at the hanger bracket on the exhaust pipe.
Anyone a picture of how this should be mounted by any chance?
The complete exhaust is just hanging below the car right now, just need to line up and tighten bolts and clamps but before i do so i better know how/where to install the tip hangers..
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I don't think the exhaust components back in the day had the aluminized coating like today either. Some were galvanized but most were bare metal.
I cut off the TTI ends and use Accurate tips just because I like them better. They both mount through the same hanger bracket.
Wietse
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That mounting hole where you bolted it to the frame rail is not there on mine...
Although, maybe since it was not used before as my car had side pipes it might still be there but completely covered below the tar coating.
Need to double check.
I did see there is another bracket on the side of the frame rail between the rail and fuel tank. (each side of the car)
I don't know where that is used for, i tried to reposition it to see if that is needed but it can only be installed in 1 way due to a locator tab.
Although, maybe since it was not used before as my car had side pipes it might still be there but completely covered below the tar coating.
Need to double check.
I did see there is another bracket on the side of the frame rail between the rail and fuel tank. (each side of the car)
I don't know where that is used for, i tried to reposition it to see if that is needed but it can only be installed in 1 way due to a locator tab.
Wietse
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If you are missing the hole with nut on the inside of the frame like I have, you probably didnt have factory dual exhaust with tips. I think @dadsbee has the style hanger on his car that you would have had? He probably has a pic all ready to go to show you, lol.
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What are you inferring Joel.. LOL You can see the "Chrome TIP" hanger threaded hole in the frame rail just after of my turn down hanger brackets..
Wietse
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I found the bolt hole, it was exactly as your picture showed.
The bottom of my car is covered with a tar coating, after some poking around i found the holes, went through it with a 7/16" tap and good to go!
Edit: You guys are just showing off these beautiful painted bottoms with no ****, grime and tar....i need to dig around through this greasy **** here!!
The below brackets are the same as under my car, just the metal bracket though.
Only that you have got to be one of the most organized guys on this forum. Not only will you have an answer to a question, but a pic to explain your answer and back up your statement. Nothing wrong with that at all
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