Secondary Port Woes - Page 3 - NoPistons -Mazda Rx7 & Rx8 Rotary Forum
NoPistons -Mazda Rx7 & Rx8 Rotary Forum


2nd Generation Specific 1986-1992 Discussion

Reply
 
 
 
Thread Tools Search this Thread
Old 03-25-2003, 01:15 PM   #21  
Senior Member
 
Join Date: May 2002
Location: California
Posts: 22,466
Default

yeah if the hose is kinked they might not work



mike
j9fd3s is offline   Reply With Quote
Old 03-25-2003, 02:17 PM   #22  
Senior Member
 
Join Date: Apr 2002
Location: IL
Posts: 2,930
Default

Quote:
Originally Posted by j9fd3s' date='Mar 25 2003, 07:15 PM
yeah if the hose is kinked they might not work



mike
but he has no air pump apparently so it shouldnt have any effect if it's kinked, but I would think that having the air pump present will increase the pressure at the aux ports since you'll have exhaust pressure coming up the tube and air pressure coming in from the air pump... now thats gone, might have an effect on them opening.



might also want to check the check valve in the split air tube. Remove the hose from the lower intake manifold (the fat one that you say is kinked) and with the engine running, see if you have exhaust coming out of the end. If you do, the check valve is bad and the exhaust pressure is able to get past the check valve, which can also effect how much pressure the aux ports are getting.
pengaru is offline   Reply With Quote
Old 03-25-2003, 02:19 PM   #23  
Senior Member
 
Join Date: Apr 2002
Location: IL
Posts: 2,930
Default

Quote:
Originally Posted by rotary>piston' date='Mar 24 2003, 02:38 AM
the header is blocking the backpressure hole up at the block. If you take it off you'll see it. Also, look at your stock manifold or gasket. There'll be a mysterious hole in it, that's how the actuators get their backpressure. That hose going to the cat is a different thing. It won't do a thing for your actuators.
I wasted all that time explaining how the aux ports work to you complete with photos and you still don't get it?



what the hell
pengaru is offline   Reply With Quote
Old 03-25-2003, 02:20 PM   #24  
Super Moderator
Thread Starter
 
Join Date: Sep 2002
Location: Tallahassee, FL
Posts: 5,425
Default

Quote:
Originally Posted by pengaru' date='Mar 25 2003, 03:17 PM
[quote name='j9fd3s' date='Mar 25 2003, 07:15 PM'] yeah if the hose is kinked they might not work



mike
but he has no air pump apparently so it shouldnt have any effect if it's kinked, but I would think that having the air pump present will increase the pressure at the aux ports since you'll have exhaust pressure coming up the tube and air pressure coming in from the air pump... now thats gone, might have an effect on them opening.



might also want to check the check valve in the split air tube. Remove the hose from the lower intake manifold (the fat one that you say is kinked) and with the engine running, see if you have exhaust coming out of the end. If you do, the check valve is bad and the exhaust pressure is able to get past the check valve, which can also effect how much pressure the aux ports are getting. [/quote]

ok, that sounds plausible. I'll check that out.



I do still have the air pump on there, but it's coming off this weekend, assuming the parts arrive.
Baldy is offline   Reply With Quote
Old 03-25-2003, 04:05 PM   #25  
Member
 
Join Date: Mar 2003
Posts: 76
Default

Quote:
Originally Posted by Baldy' date='Mar 23 2003, 06:17 PM
well, I look at them while twisting the throttle actuator thing...I've also had my wife rev the engine while I look



I've done this before, when they worked, and I could see them move, now they don't



and the welder did weld the small flange, then I bolted the pipe to it, and I know is wasn't welded shut, because I felt the air coming out before I reattached the tube



I don't want to wire them open, I really don't like that option



Quote:
Baldy here's something i found looking around a while ago... and i'm planning on using it myself



i think this is what FC might be talking about



plus with a little tinkering you can hook up a air pressure sensor to that and make it

so you can control the air flow from the drivers seat.



Frank


and I don't know what you're talking about
sorry i forgot to add a the link i was talking about



it involves the air pump though...



here's the link in case you leave the air pump on



http://home.earthlink.net/~burntoast/6port.html
RXciting is offline   Reply With Quote
Old 03-26-2003, 07:17 AM   #26  
Super Moderator
Thread Starter
 
Join Date: Sep 2002
Location: Tallahassee, FL
Posts: 5,425
Default

I stuck paper clips on the shafts and drove to work this morning. When I got to work, they were gone.



I am still unsure whether or not they are working, so I'll try again later...
Baldy is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Turbo 6 port port job - no bridge port TweakGames Rotary Engine Building, Porting & Swaps 25 10-14-2007 12:10 AM
Primary Vs Secondary Port Timing 10k2 Rotary Engine Building, Porting & Swaps 3 04-27-2005 09:53 PM
Jude Ito's Extreame Secondary Port pvillknight7 Rotary Engine Building, Porting & Swaps 6 04-25-2005 03:52 PM
My Preliminary Secondary Port Templates Drago86 Rotary Engine Building, Porting & Swaps 8 03-14-2004 03:26 PM
6-port Woes Baldy 2nd Generation Specific 8 01-16-2004 05:42 PM



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

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 04:27 AM.


© 2018 MH Sub I, LLC dba Internet Brands
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.