Twin_Turbo
Der Maulwurf
- Joined
- Mar 5, 2008
- Messages
- 7,575
I'm working on some boom tubes. They are part of a dual (non crossove/balance pipe ) 3" (yes, overkill I know) exhaust for a 70 Coronet Wagon with a severe redneck rake
The car
And the boom tubes will exit just in front of the rear wheels. Now, one can buy some from dr. gas or off ebay but what fun is that, adn they aren't stainless. And BIY (build it yourself) is more satisfying than buying...so here we go. Same old recipe, stainless tubing and weld els. (the larger sizes aren't available in the brushed or even etched finish so these are raw)
No weld seams around collector flange, welded on the inside
The oversize holes on the stainless collector flanges are purposely done. This allows the pipes to be clocked a little. When all done I'm going to weld a small section ot tubing inside that slips into the header collector so it will never leak.
Crooked mopar headers, the exhaust need all kinds of bends and angles to give a straight shot back
The passenger side pipe is now closer to the subframe connector 9the big frame rail) than the other side, more bends required
The angle of the dr. side pipe looks off here, it's in the pic because it's taken at a slight angle and the car has a severe rake, from straight below it runs perfectly parallel to the car centerline.
This is how I'm going to fab the boom tubes. Sections of pipe cut lengthwise and a sheet of stainless in between to finish it off. Will probably add some internal ribs with holes in them just like the ones from dr. gas.
This is the long side that you see in the design drawing, I still have to do the side with the bend in it.
Because of the massive subframe connectors the boom tube will end up getting a bend along the body somewhere, I'll cut a V section out, bend the rest up and weld it back together again so the tube exit stays close to the body. It just won't look right hanging down real low.
I may end up doing something similar with my 82.
The car
And the boom tubes will exit just in front of the rear wheels. Now, one can buy some from dr. gas or off ebay but what fun is that, adn they aren't stainless. And BIY (build it yourself) is more satisfying than buying...so here we go. Same old recipe, stainless tubing and weld els. (the larger sizes aren't available in the brushed or even etched finish so these are raw)
No weld seams around collector flange, welded on the inside
The oversize holes on the stainless collector flanges are purposely done. This allows the pipes to be clocked a little. When all done I'm going to weld a small section ot tubing inside that slips into the header collector so it will never leak.
Crooked mopar headers, the exhaust need all kinds of bends and angles to give a straight shot back
The passenger side pipe is now closer to the subframe connector 9the big frame rail) than the other side, more bends required
The angle of the dr. side pipe looks off here, it's in the pic because it's taken at a slight angle and the car has a severe rake, from straight below it runs perfectly parallel to the car centerline.
This is how I'm going to fab the boom tubes. Sections of pipe cut lengthwise and a sheet of stainless in between to finish it off. Will probably add some internal ribs with holes in them just like the ones from dr. gas.
This is the long side that you see in the design drawing, I still have to do the side with the bend in it.
Because of the massive subframe connectors the boom tube will end up getting a bend along the body somewhere, I'll cut a V section out, bend the rest up and weld it back together again so the tube exit stays close to the body. It just won't look right hanging down real low.
I may end up doing something similar with my 82.