3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
Sponsored by:

Going from half bridge back to large street port

Thread Tools
 
Search this Thread
 
Old 04-28-15, 01:01 PM
  #1  
BackFire

Thread Starter
iTrader: (7)
 
wankel88's Avatar
 
Join Date: Oct 2007
Location: Pueblo Co
Posts: 398
Received 10 Likes on 4 Posts
Going from half bridge back to large street port

So I'm in a dilemma and need some advice. My rear iron broke at the inner water seal next to my port. I'm currently looking for a replacement rear side housing. I was thinking possibly if I can get a replacement front and rear housing could I go to a large street port? The next and biggest issue is that my rotor housings are notched to match the bridge job. Would this be fine if I go street port or do I need to replace the rotor housings?
Old 04-29-15, 09:49 AM
  #2  
BackFire

Thread Starter
iTrader: (7)
 
wankel88's Avatar
 
Join Date: Oct 2007
Location: Pueblo Co
Posts: 398
Received 10 Likes on 4 Posts
Bump anyone?
Old 04-29-15, 10:38 AM
  #3  
rotorhead

iTrader: (3)
 
arghx's Avatar
 
Join Date: Aug 2004
Location: cold
Posts: 16,182
Received 430 Likes on 263 Posts
why did it break, especially on an FD which has stronger casting than older turbo FC engines?
Old 04-29-15, 11:08 AM
  #4  
BackFire

Thread Starter
iTrader: (7)
 
wankel88's Avatar
 
Join Date: Oct 2007
Location: Pueblo Co
Posts: 398
Received 10 Likes on 4 Posts
He cut way too close to the inner water seal channel from what it seems I'll post a pic
Old 04-29-15, 12:55 PM
  #5  
BackFire

Thread Starter
iTrader: (7)
 
wankel88's Avatar
 
Join Date: Oct 2007
Location: Pueblo Co
Posts: 398
Received 10 Likes on 4 Posts
Name:  20150427_205822_RichtoneHDR_zpsutcxovvo.jpg
Views: 48
Size:  865.3 KB
Old 04-29-15, 12:57 PM
  #6  
BackFire

Thread Starter
iTrader: (7)
 
wankel88's Avatar
 
Join Date: Oct 2007
Location: Pueblo Co
Posts: 398
Received 10 Likes on 4 Posts
Here is a pic of the notch on the rotor housing






Name:  20150427_210033_zpsrlgowyts.jpg
Views: 69
Size:  453.6 KB
Old 04-29-15, 08:44 PM
  #7  
Sponsor
iTrader: (41)
 
IRPerformance's Avatar
 
Join Date: Apr 2003
Location: NJ
Posts: 11,347
Received 317 Likes on 190 Posts
It looks like the bridge was cut too big or maybe too much material was removed underneath it. I would just pick up a pair of front and rear irons, and do a more conservative bridge. If one broke, the other is likely to go as well if the porting is similar.
Old 04-29-15, 09:55 PM
  #8  
BackFire

Thread Starter
iTrader: (7)
 
wankel88's Avatar
 
Join Date: Oct 2007
Location: Pueblo Co
Posts: 398
Received 10 Likes on 4 Posts
I'm gonna do it myself this time. Question is should I keep rolling with a hbp or go with a large street port. The iron I now have could probably be ported to a j port still but that's not my forte.
Old 04-30-15, 08:27 AM
  #9  
Time or Money, Pick one

iTrader: (37)
 
silverTRD's Avatar
 
Join Date: Oct 2005
Location: Torrance, ca.
Posts: 3,361
Received 154 Likes on 125 Posts
What is the notch for? I'm not too familiar with bridge ports.
Old 04-30-15, 11:36 AM
  #10  
BackFire

Thread Starter
iTrader: (7)
 
wankel88's Avatar
 
Join Date: Oct 2007
Location: Pueblo Co
Posts: 398
Received 10 Likes on 4 Posts
Increased airflow to match the extra brow cut into the iron it seems. An old school Puerto Rican guy built it for me. I know those guys have their bags of secrets when it come to their rotary work lol.
Old 04-30-15, 12:47 PM
  #11  
Rotor Head Extreme

iTrader: (8)
 
t-von's Avatar
 
Join Date: Apr 2002
Location: Midland Texas
Posts: 6,719
Likes: 0
Received 26 Likes on 17 Posts
That's easily repairable. Get someone to build that section up with a tig and machine it back down. I've repaired several broken coolant seal walls on my own 20b doing the above and using a dremel. My intermediate housing unfortunately had some bad castings and I had about 6 broken sections. With that many broken sections, I've always had tiny leaks into the combustion chamber but that stopped as soon as I put in some radiator stop leak. Late last year, I even drove my 20b 2,200 miles round trip to sevenstock and added ZERO water the entire trip. 1 broken tab is an easy fix.

Last edited by t-von; 04-30-15 at 12:54 PM.
Old 04-30-15, 10:13 PM
  #12  
BackFire

Thread Starter
iTrader: (7)
 
wankel88's Avatar
 
Join Date: Oct 2007
Location: Pueblo Co
Posts: 398
Received 10 Likes on 4 Posts
Maybe I'll try that. I've sourced another set of housings today. Not sure if my cheezy gasless harbor freight welder could perform such a job tho. If I get bored I may attempt that but I'd be too nervous to try that in my build.
Old 05-01-15, 08:37 AM
  #13  
BackFire

Thread Starter
iTrader: (7)
 
wankel88's Avatar
 
Join Date: Oct 2007
Location: Pueblo Co
Posts: 398
Received 10 Likes on 4 Posts
Watched a vid on the bridge port. Turns out those notched are required for the extra brow cut so air can actually pass through. Without them the rotor housing would just block off that extra cut it looks.
Old 05-02-15, 09:25 PM
  #14  
BackFire

Thread Starter
iTrader: (7)
 
wankel88's Avatar
 
Join Date: Oct 2007
Location: Pueblo Co
Posts: 398
Received 10 Likes on 4 Posts
Name:  20150502_133822_zpsdcqvkdsb.jpg
Views: 85
Size:  386.0 KB


No good....... pretty sure that iron caused this as well. No damage to the rotor house or any seals. Amazing those als seals. I bet if it were a factory seal it would have been way worse.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
cristoDathird
Introduce yourself
28
05-30-19 08:47 PM
dkwasherexd
Single Turbo RX-7's
21
05-27-17 04:51 AM



Quick Reply: Going from half bridge back to large street port



All times are GMT -5. The time now is 03:07 AM.