|
I don't have a lot of clearance under the car, so I had to figure out a muffler that was not very tall.
I couldn't find a muffler for sale that was only 2.5 inches tall, and had the equivalent of a 2.5 inch diameter for flow. To be able to have that kind of flow, I decided to get 2.5 inch equivalent oval tubing, and 3 inch equivalent oval tubing and make a custom glasspack. The 3 inch equivalent tubing ends up being 2.5 inches tall.
1. I ordered the oval tubing, two transitions from round to oval, and one 45 degree oval tube from the internet . |
|
2. Most of these came from a company called spintech which also makes mufflers. |
3. This is the inner tube marked for the holes that will have to be drilled. |
|
4. Each drill point is also marked with a center punch. |
5. Here are the holes drilled on the transition which will be welded to the main tube. |
|
6. One line of holes drilled. I calculated that I would have 956 holes when complete.. |
7. Further along with drilling the holes. |
|
8. One side completely drilled. |
9. I will have to find a good way to deburr the inside so I don't impede exhaust flow. |
|
10. To do the narrow bit I made a jig to hold the edge I want to drill upright. |
11. The jig also has an area to hold the pipe at a 45 degree angle for the edge holes. |
|
12. Inside after somewhat deburring. |
13. All of the drilling on the main tube complete. |
|
14. I have to make the end caps so that they seal but also let the smaller pipe pass through. |
15. Inside of the end cap cut out. |
|
16. End cap slid over transition. I also realized I had to make it shorter to fit better under the car. |
17. New holes drilled in the transition, and end cap slid over. |
|
18. Transition welded to main tube. |
19. Full length of the welded inner tube. |
|
20. End cap welded on to transition. |
21. Stainless steel wool getting wrapped over. I decided not to use fiberglass after all. |
|
22. Steel wool poking out before the outer shell was fully seated. |
23. Full length muffler before final welding. |
|
24. Muffler stangind up before final welding. |
25. Muffler after final welding. |
Looking back, I would reccomend buying perforated sheet metal rather than drilling a thousand holes. I can't wait to hear what this will sound like.
|
