Rotary Performance Mufflers?
03-05-10, 10:49 AM
#1
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Rotary Performance Mufflers?
I have searched the site to see what people have said about the muffler replacement from Rotary Performance. Has anyone had experience with these mufflers? How about the bonez cat?
03-05-10, 01:03 PM
#2
When I had my bone stock 12A, I used their cat. I don't think I needed it to pass emissions, but it was a lot lighter than the old one and lowered the exhaust tone; probably because it had a presilencer in front instead of the precats. I think I put it on to stop the exhaust popping.
Don't know if this is 100% true, but I read somewhere that Rotary Performance, Mazdatrix, and Racing Beat mufflers all come from one supplier. Could someone verify this?
Don't know if this is 100% true, but I read somewhere that Rotary Performance, Mazdatrix, and Racing Beat mufflers all come from one supplier. Could someone verify this?
03-05-10, 09:54 PM
#4
When I had my bone stock 12A, I used their cat. I don't think I needed it to pass emissions, but it was a lot lighter than the old one and lowered the exhaust tone; probably because it had a presilencer in front instead of the precats. I think I put it on to stop the exhaust popping.
Don't know if this is 100% true, but I read somewhere that Rotary Performance, Mazdatrix, and Racing Beat mufflers all come from one supplier. Could someone verify this?
Don't know if this is 100% true, but I read somewhere that Rotary Performance, Mazdatrix, and Racing Beat mufflers all come from one supplier. Could someone verify this?
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03-08-10, 01:18 AM
#8
http://www.rx7.com/store/rx7/samuffler.html
^ Am I seeing that right? That muffler looks like it only has 1/2" holes in the tips.
^ Am I seeing that right? That muffler looks like it only has 1/2" holes in the tips.
03-08-10, 04:02 PM
#12
Environmentally-Hostile
Arranged as it is, the tips of the exhaust each constitute an effective rocket nozzle, as seen here:
Now this, predictably, will increase exhaust flow (its a rocket man) but it also has the side effect of creating thrust. We all know that rotary exhaust gas pressure and velocity if off the chart. Here is their tested results in regard to thrust-vectoring of the exhaust.
As you can see, at 10,000rpm, the thrust is quite high.
03-10-10, 07:51 PM
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Would the 85 muffler have a single pipe exhaust compared to the one pictured?
Is Racing beat the only one that has a engine to muffler exhaust system for sale?
Last question I can think of...... Would an 82 dual pipe exhaust system fit on an 85 car?
Is Racing beat the only one that has a engine to muffler exhaust system for sale?
Last question I can think of...... Would an 82 dual pipe exhaust system fit on an 85 car?
03-11-10, 07:57 PM
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I know there will be tons of people saying that the racing beat exhaust is the best but how about the pacesetter exhaust? I used the headers several years ago and they worked pretty well. How are the pacesetter muffler sound compared to factory?
03-11-10, 11:21 PM
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i have one now header + magnaflow=loud as ****!
so i added a stupid little thrush muffler behind it to quite it down still get pulled over lol
magnaflow = waste of money
03-11-10, 11:23 PM
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pacesetter is shitty and very thin walled my friend has a full system, although the header isnt so bad except the design is stupid as **** teh pipes are all goofy looking and hang really low RB is the best
03-11-10, 11:26 PM
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No man, its actually to increase exhaust flow rate.
Arranged as it is, the tips of the exhaust each constitute an effective rocket nozzle, as seen here:
Now this, predictably, will increase exhaust flow (its a rocket man) but it also has the side effect of creating thrust. We all know that rotary exhaust gas pressure and velocity if off the chart. Here is their tested results in regard to thrust-vectoring of the exhaust.
As you can see, at 10,000rpm, the thrust is quite high.
Arranged as it is, the tips of the exhaust each constitute an effective rocket nozzle, as seen here:
Now this, predictably, will increase exhaust flow (its a rocket man) but it also has the side effect of creating thrust. We all know that rotary exhaust gas pressure and velocity if off the chart. Here is their tested results in regard to thrust-vectoring of the exhaust.
As you can see, at 10,000rpm, the thrust is quite high.
hmm interesting but wouldnt it make more sense that a smaller exit hole would also create lots of back pressure which would slow the flow down ALOT?? idk maybe im just a ****** idiot