Exhausting work
#1
Exhausting work
Finally completed the exhaust system for the 62 wagon. Frequent readers may recall that the 61-63 F-85s used a transverse muffler behind the rear axle. The single exhaust pipe runs in the trans tunnel, next to the driveshaft. Many folks run conventional dual exhaust under the car, but that makes for low-hanging mufflers. I wanted to keep the exhaust pipe in the stock location. I talked myself into a single pipe when I realized that two 2.5" pipes are fine for a 455, so a single 2.5" pipe should be acceptable for a 215. For now I kept the stock Y-pipe; I'll change that when I install the Rover factory shorty headers.
After scanning the Walker Exhaust catalog, I noticed that Camaros have exhaust pipes that look a lot like the one in my 62, at least from the middle of the car over the axle to the muffler. I also figured I could use the Camaro-style muffler, with a single inlet and two outlets on opposite ends. I first got a Dynomax Super Turbo, but when I held it up under the car it seemed to hang down too much. At GMs at Carlisle I came across a Magnaflow with the same inlet/outlet configuration that was quite a bit smaller (5 x 8 body vs. 4.25 x 9.75). In this photo, the lower right tube is the inlet on both and the other two are the outlets.
I was afraid that the Magnaflow would be too loud. Turns out I was right, but I don't have a choice right now.
With the muffler settled, it was time for the exhaust pipe. I initially got a Dynomax 46744 pipe for a third gen Camaro. That pipe is supposed to have 2.5" ends, but what was not in the listing is that it's actually a 2.75" pipe with the muffler end necked down. Here's a photo next to the stock "soda straw" pipe. Needless to say, it did not fit well under the car.
I then discovered the Dynomax 47638, also for a third gen Camaro, which is a true 2.5" pipe. It only required a small pie cut over the rear axle to fit perfectly. I formed the front section from straight pipe and mandrel bent elbows. Here's the fabricated pipe next to the original.
Here's a closeup of the pie cut over the axle.
And finally, a view of the front end. Note the S-turn that peeks out from the driveshaft tunnel and aims at the end of the Y-pipe. The flare and flange is also a stock Walker item.
With the pipe and muffler in place, I fabricated tail pipes. I didn't want the pipes to run out the back, since I like to drive with the back window open, so I went for dumps behind the back wheels. Again, stock mandrel bent elbows and straight pipe were welded up.
Note that I used the Walker band-style clamps, which make it easy to disassemble the exhaust system. I love these clamps now. I will probably made a few tweaks to the pipe routing after Nationals, but for now it works. Yes, it's louder than I'd like, but with the tailpipes it's not unbearable inside the car. Hopefully it won't drone on the freeway. Once I get the pipes exactly the way I like them, I'll have the whole thing HPC coated (except for the stainless muffler).
After scanning the Walker Exhaust catalog, I noticed that Camaros have exhaust pipes that look a lot like the one in my 62, at least from the middle of the car over the axle to the muffler. I also figured I could use the Camaro-style muffler, with a single inlet and two outlets on opposite ends. I first got a Dynomax Super Turbo, but when I held it up under the car it seemed to hang down too much. At GMs at Carlisle I came across a Magnaflow with the same inlet/outlet configuration that was quite a bit smaller (5 x 8 body vs. 4.25 x 9.75). In this photo, the lower right tube is the inlet on both and the other two are the outlets.
I was afraid that the Magnaflow would be too loud. Turns out I was right, but I don't have a choice right now.
With the muffler settled, it was time for the exhaust pipe. I initially got a Dynomax 46744 pipe for a third gen Camaro. That pipe is supposed to have 2.5" ends, but what was not in the listing is that it's actually a 2.75" pipe with the muffler end necked down. Here's a photo next to the stock "soda straw" pipe. Needless to say, it did not fit well under the car.
I then discovered the Dynomax 47638, also for a third gen Camaro, which is a true 2.5" pipe. It only required a small pie cut over the rear axle to fit perfectly. I formed the front section from straight pipe and mandrel bent elbows. Here's the fabricated pipe next to the original.
Here's a closeup of the pie cut over the axle.
And finally, a view of the front end. Note the S-turn that peeks out from the driveshaft tunnel and aims at the end of the Y-pipe. The flare and flange is also a stock Walker item.
With the pipe and muffler in place, I fabricated tail pipes. I didn't want the pipes to run out the back, since I like to drive with the back window open, so I went for dumps behind the back wheels. Again, stock mandrel bent elbows and straight pipe were welded up.
Note that I used the Walker band-style clamps, which make it easy to disassemble the exhaust system. I love these clamps now. I will probably made a few tweaks to the pipe routing after Nationals, but for now it works. Yes, it's louder than I'd like, but with the tailpipes it's not unbearable inside the car. Hopefully it won't drone on the freeway. Once I get the pipes exactly the way I like them, I'll have the whole thing HPC coated (except for the stainless muffler).
#5
#7
Haha. If you need it or anything else welded just let us know. Is it loud all the time or just when you get on it? Or is it something you can get used to? BTW is that muffler used? If so then it shouldn't get any louder.
#9
BTW is that muffler used? If so then it shouldn't get any louder.
That's fixed, but now it won't start. I decided to come in and cool off for a while before tackling that problem.
Great job on fabbing the exhaust, southern engineering at its finest!
#10
#11
#13
Only if there were someplace to put them. You can see the tailpipes in the rear end photo above. The 2.5" pipe in front of the muffler is a tight squeeze in the driveshaft tunnel, and the short section where it jumps out of the tunnel to mate with the Y-pipe is already the lowest part of the car.
#15
Joe,
Congrats on the exhaust. Thanks also for your detailed post with pictures. I learn
lots of things reading posts here. I may be brave enough to tackle exhaust when the time comes. Also glad to see the plywood with jack stands. Thought I was the only one.
Best of outcomes and hope you make it to the Show Field.
Dan
Congrats on the exhaust. Thanks also for your detailed post with pictures. I learn
lots of things reading posts here. I may be brave enough to tackle exhaust when the time comes. Also glad to see the plywood with jack stands. Thought I was the only one.
Best of outcomes and hope you make it to the Show Field.
Dan
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