Go Back   Rotary Car Club > Tech Discussion > RX-7 2nd Gen Specific (1986-92)
Reload this Page Another Exhaust Thread :)
Home Forum Classifieds Register FAQ Members List Calendar Mark Forums Read

RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

 
 
Thread Tools Display Modes
\r\n \r\n\r\n \r\n\r\n \r\n \r\n\r\n \r\n \r\n
\r\n __________________
\r\n The Official FC Radiator Thread My Project Thread: Cerberus CCVT
\r\nVirginia Rotary Group\r\n
\r\n \r\n \r\n\r\n \r\n\r\n \r\n\r\n \r\n\r\n\r\n \r\n vex is offline\r\n\r\n\r\n \r\n \r\n \r\n \r\n  \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n Reply With Quote\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n \r\n \r\n \r\n \r\n\r\n\r\n\r\n\r\n'; pd[124767] = '\r\n\r\n \r\n\r\n
\r\n
\r\n
\r\n\r\n
\r\n \r\n\r\n\r\n\r\n\r\n\r\n \r\n \r\n \r\n \r\n\r\n\r\n \r\n\r\n\r\n \r\n \r\n \r\n\r\n
\r\n \r\n Old\r\n 07-30-2010, 03:04 PM\r\n \r\n \r\n \r\n  \r\n #2\r\n \r\n
\r\n\r\n
\r\n \r\n RETed\r\n \r\n \r\n\r\n \r\n\r\n \r\n \r\n\r\n \r\n \r\n
\r\n __________________
\r\n what I have:
\r\n1985 Gs:12a All motor Drag car - 1973 Rx2: Play car
\r\nWhat I had:
\r\n93 Touring: TRADED - 91 Coupe: TRADED - 90 GTU: RHD - 88 10AE: SOLD - 87 Base: SOLD - 86 Base: SOLD - 1985 GSLSE - 85 Gsl: SOLD - 80 Gs: TRADED - 1972 Rx2\r\n
\r\n \r\n \r\n\r\n \r\n\r\n \r\n\r\n
\r\n sen2two is offline\r\n\r\n\r\n \r\n \r\n \r\n \r\n  \r\n \r\n \r\n \r\n \r\n \r\n \r\n Reply With Quote\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n
\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
\r\n \r\n
\r\n
\r\n
\r\n\r\n\r\n\r\n'; pd[124835] = '\r\n\r\n \r\n\r\n
\r\n
\r\n
\r\n\r\n
\r\n \r\n\r\n\r\n\r\n\r\n\r\n \r\n \r\n \r\n \r\n\r\n\r\n \r\n\r\n\r\n \r\n \r\n \r\n\r\n
\r\n \r\n Old\r\n 07-31-2010, 08:35 PM\r\n \r\n \r\n \r\n  \r\n #17\r\n \r\n
\r\n\r\n
\r\n \r\n TitaniumTT\r\n \r\n \r\n\r\n \r\n\r\n \r\n \r\n\r\n \r\n \r\n \r\n \r\n \r\n\r\n \r\n\r\n \r\n\r\n
\r\n vex is offline\r\n\r\n\r\n \r\n \r\n \r\n \r\n  \r\n \r\n \r\n \r\n \r\n \r\n \r\n Reply With Quote\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n
\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
\r\n \r\n
\r\n
\r\n
\r\n\r\n\r\n\r\n'; pd[125100] = '\r\n\r\n \r\n\r\n
\r\n
\r\n
\r\n\r\n
\r\n \r\n\r\n\r\n\r\n\r\n\r\n \r\n \r\n \r\n \r\n\r\n\r\n
\r\n \r\n Old\r\n 08-03-2010, 01:21 PM\r\n \r\n \r\n \r\n  \r\n #32\r\n \r\n
\r\n\r\n
\r\n \r\n RETed\r\n
Prev Previous Post   Next Post Next
Old 07-31-2010, 08:13 PM   #8
vex
RCC Loves Me Not You
 
vex's Avatar
 
Join Date: Jul 2008
Location: Influx.
iTrader: (6)
Posts: 2,113
Rep Power: 19
vex will become famous soon enough
Default
Quote:
Originally Posted by Rotary#10 View Post
Hey could you give me more information about this tune by resonance? its sound interesting. please?
It's pretty straight forward. You tune your exhaust by the frequency of the RPM band. For instance you can tune it by Exhaust length, mufflers--both in dimensions, and number, as well as configuration.

This kind resonance is for all intents and purposes deconstruction wave interference. If you're only using pipes you get the phenomenon only at modes of certain frequencies; ie 2000, 4000, 8000 rpm. When you begin adding in mufflers, pre-silencers/resonators, you begin to affect the wave pattern throughout the exhaust system. Now since we can't have a modifying length of the exhaust to minimize the entire rpm band you make compromises. You can have the exhaust be relatively quiet below say 3000RPM then it can get progressively louder before hitting another node and becoming quiet again.

At the end of the day one can utilize Fourier transforms to locate and eventually eliminate the peak 'oscillation' or waves and all harmonics there of. I would attempt to tune my exhaust using this method but it may just be an attempt in futility because I'm lacking the time to do it.
vex is offline   Reply With Quote
 

Bookmarks

« Previous Thread | Top | Next Thread »
Thread Tools
Display Modes
Threaded Mode Threaded Mode

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 01:52 PM.

Contact Us - Rotary Car Club - Archive - Top

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Hosted by www.GotPlacement.com
Ad Management by RedTyger