I'm thinking of doing this, but wanted to know what other's experiences have been after swapping them or grinding the diffusers out.
Did it affect low-end torque, fuel economy, noise output, ect...? I've heard of a few reasons Mazda put the difusers in. Are they for keeping proper backpressure(sounds stupid to me), reducing noise(I thought they made silencers and muflers for that), and/or to disrupt exhaust pulses going from one port to the other(maybe they thought to hard on that one)? https://www.nopistons.com/forums/pub...IR#>/wacko.png Thanks, New |
Hasn't anyone swapped out the turbo sleeves or ground out the difusers? https://www.nopistons.com/forums/pub...1047683561.gif https://www.nopistons.com/forums/pub...1047683561.gif https://www.nopistons.com/forums/pub...1047683561.gif
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if memory serves correct, it's just to reduce noise.
it would make sense, since there's no turbo to dampen the noise |
[quote name='Old Splatterhand' date='Aug 25 2005, 12:12 AM']if memory serves correct, it's just to reduce noise.
it would make sense, since there's no turbo to dampen the noise [snapback]751798[/snapback] [/quote] I am planning to go with a presilencer of some kind and a nice big cat to help keep the noise down. I would really like to know what others have experianced and done to keep the extra noise down before I start grinding or swapping the sleeves... |
I do it on every n/a motor I build. Whatever the reason for the sleeves, be it noise reduction, they are an exhaust restriction. I can't tell you an increase in db, because every car I have done has had a complete different setup, and you can never get any two cars the same.
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how are NA rotor housings different from turbo rotor housings... aside from the diffusers in the sleeves?
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No coolant passage for the lim.
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the noise tone changes, and it might sound a bit more annoying to some, but its nto a major diffrence, atlest nothing that cant be fixed with an extra presilencer. most peopel run loud exhaust on their cars anway so i dont see this bothing people. unless they were very concerned with the noise in teh first place.
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[quote name='kahren' date='Aug 26 2005, 12:48 PM']the noise tone changes, and it might sound a bit more annoying to some, but its nto a major diffrence, atlest nothing that cant be fixed with an extra presilencer. most peopel run loud exhaust on their cars anway so i dont see this bothing people. unless they were very concerned with the noise in teh first place.
[snapback]752197[/snapback] [/quote] Yeah. I'm a little concerned about the noise. If I want to autocross in the Atlanta region I need to keep the noise below 96db. Someone was going to give me the turbo sleeves, but I guess they forgot about me. https://www.nopistons.com/forums/pub...O_DIR#>/11.gif Oh well. What's everyone's favorite way of grinding out the difusers? |
[quote name='Newguy707' date='Aug 26 2005, 07:56 PM']
What's everyone's favorite way of grinding out the difusers? [snapback]752292[/snapback] [/quote] in my opinion that should be the last resort, try to get the turbo sleeves. atleast thats my favorite way of grinding them, to answer your quastion. |
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