talskinyguy
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- DeKalb, IL
I wanted a muffler on my M35A2 because its just too **** loud. Talking to a passenger is impossible and my ears hurt for a while after a long drive.
I wanted 2 things:
1. The most sound reduction possible
2. Not adding additional restriction to the exhaust. From what I have read the engine flows around 400-450cfm.
Looking at mufflers most people here are using a small bullet style muffler, and I wanted more. One person said they are using a Donaldson M070025 which has the following relevant stats.
719 CFM is far more than I need, so I kept looking and found this. The Donaldson M090146 which has the following relevant stats
That is still at least 30% more flow than I need a the lowest pressure difference it is rated at of 1 In Hg, which is about 0.5 psi. That is the muffler I chose and it just arrived today. Here it is.
It is worth noting that there are cheaper and more expensive mufflers that cross reference with this muffler, but every since one of them I could find a review of said they were a straight through muffler that you could look right through. This muffler is not a straight through muffler and therefore should have a better sound reduction. The do fit all the physical dimensions of this muffler but they are not the same. I picked this up on ebay for $135 shipped.
More posts to follow as I install it. This will nearly completely replace my stack starting from about 3-5 inches above my fender.
I wanted 2 things:
1. The most sound reduction possible
2. Not adding additional restriction to the exhaust. From what I have read the engine flows around 400-450cfm.
Looking at mufflers most people here are using a small bullet style muffler, and I wanted more. One person said they are using a Donaldson M070025 which has the following relevant stats.
| Inlet Diameter: | 3.50 Inches (89 MM) |
| Outlet Diameter: | 3.50 Inches (89 MM) |
| Body Diameter: | 7.00 Inches (178 MM) |
| Body Length: | 14.00 Inches (356 MM) |
| Overall Length: | 19.75 Inches (502 MM) |
| Rated Flow @ 1 In hg | 719.00 CFM (50.80 CMM) |
| Attenuation: | 10-15 dBA |
719 CFM is far more than I need, so I kept looking and found this. The Donaldson M090146 which has the following relevant stats
| Inlet Diameter: | 3.50 Inches (88.90 MM) |
| Outlet Diameter: | 3.50 Inches (88.90 MM) |
| Body Diameter: | 9.00 Inches (228.60 MM) |
| Body Length: | 44.50 Inches (1130.30 MM) |
| Overall Length: | 51.00 Inches (1295.40 MM) |
| Rated Flow @ 1 In Hg: | 578.00 CFM (16.3574 CMM) |
| Attenuation: | 19-25 dBA |
That is still at least 30% more flow than I need a the lowest pressure difference it is rated at of 1 In Hg, which is about 0.5 psi. That is the muffler I chose and it just arrived today. Here it is.
It is worth noting that there are cheaper and more expensive mufflers that cross reference with this muffler, but every since one of them I could find a review of said they were a straight through muffler that you could look right through. This muffler is not a straight through muffler and therefore should have a better sound reduction. The do fit all the physical dimensions of this muffler but they are not the same. I picked this up on ebay for $135 shipped.
More posts to follow as I install it. This will nearly completely replace my stack starting from about 3-5 inches above my fender.