1st Generation Specific 1979-1985 Discussion

Is Backpressure Critical?

Old Jan 19, 2003 | 09:41 PM
  #11  
winger's Avatar
Senior Member
 
Joined: Feb 2002
Posts: 643
Default

rocket scientist
Old Jan 19, 2003 | 10:37 PM
  #12  
j9fd3s's Avatar
Senior Member
 
Joined: May 2002
Posts: 22,465
From: California
Default

well put!



mike
Old Jan 20, 2003 | 04:11 PM
  #13  
Stripgear's Avatar
Junior Member
 
Joined: Aug 2002
Posts: 24
Default

The ideal exhaust system on a rotary would have a perfect vacuum right at the exhaust port


This is why RX-7's make excellent vehicles for space travel.
Old Jan 20, 2003 | 04:36 PM
  #14  
j9fd3s's Avatar
Senior Member
 
Joined: May 2002
Posts: 22,465
From: California
Default

as the judge keeps pointing out, we do live in a rotary universe



mike
Old Jan 20, 2003 | 04:45 PM
  #15  
teknics's Avatar
Senior Member
 
Joined: Dec 2002
Posts: 4,837
From: Wayne, NJ
Default

so with that whole vaccuum thingy i should get one of those boat water pumps, rig it in place of the cat so it's sucking exhaust out and i'll see hp gains? great that'll be the next hot ricer item "put a wind tunnel in your exhaust!"



kevin.
Old Jan 20, 2003 | 06:12 PM
  #16  
j9fd3s's Avatar
Senior Member
 
Joined: May 2002
Posts: 22,465
From: California
Default

borla has those "intercooled" tips....



mike
Old Jan 20, 2003 | 07:48 PM
  #17  
treceb's Avatar
to infinity & beyond, me
 
Joined: Aug 2001
Posts: 5,124
From: santurce
Default

right, like peristaltic pumps... constant flow equals no air contamination. now, why didnt i think of that.
Old Jan 20, 2003 | 10:57 PM
  #18  
Shpook's Avatar
Junior Member
 
Joined: Jan 2003
Posts: 18
From: Hollywood, FL
Default

on my old 12a, i ran a RB header straight back thorugh 2 1/2 pipe, and ending in a crappy *** MagnaFlow muffler. Now keep in mind, i only had (IMO) about 160hp or so. I've never heard an RX-7 sound as sweet as this setup did, although it was loud as hell(well, excluding heavily modded engines).



Also, zebrenoir, on a piston engine, back pressure is also used for the scavengeing effect. It's used to help pull the intake valves open as the exhaust valves close. Of course, in a rotary, this isn't needed, since there is no valvetrain. Ahh, the wonderful world of rotary!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
blandry23
1st Generation Specific
12
Jun 1, 2010 10:55 AM
jdm12a
1st Generation Specific
8
Dec 4, 2006 10:05 AM
cymfc3s
Insert BS here
27
Jan 11, 2003 02:44 AM
SPEED_NYC
Insert BS here
13
Oct 31, 2002 05:30 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread

All times are GMT -5. The time now is 02:47 PM.