Rotary Engine Building, Porting & Swaps All you could ever want to know about rebuilding and porting your rotary engine! Discussions also on Water, Alcohol, Etc. Injection

Exhaust Housing Temps

Thread Tools
 
Search this Thread
 
Old 03-07-2004, 11:44 AM
  #11  
Senior Member
 
j9fd3s's Avatar
 
Join Date: May 2002
Location: California
Posts: 22,465
Default

Originally Posted by Lynn E. Hanover' date='Mar 6 2004, 11:29 PM
No bridge ports were allowed, so some clever folks came up with a finger port.



Think about that for a while.



Lynn E. Hanover
ive heard that called the peninsula port too



for everyone else the rule said something like, you may port as big as you want as long as you do not change the number of ports (ie with a bp you add a port), crazy stuff
j9fd3s is offline  
Old 03-07-2004, 01:48 PM
  #12  
Senior Member
 
venomrx7's Avatar
 
Join Date: Dec 2003
Location: Mississippi
Posts: 464
Default

both of those cars are beautiful, I can't wait till I get done with my street car project and lay into my race car
venomrx7 is offline  
Old 03-07-2004, 02:18 PM
  #13  
Senior Member
 
Jeff20B's Avatar
 
Join Date: Nov 2001
Posts: 2,284
Default

I'll think about the finger (peninsula) port for a while.



Oh my goodness; is it what I think it is?
Jeff20B is offline  
Old 03-07-2004, 03:16 PM
  #14  
Senior Member
 
venomrx7's Avatar
 
Join Date: Dec 2003
Location: Mississippi
Posts: 464
Default

does anyone have a pic of this port? is it the same or similar to a monster or j port? i've never heard of a finger or pen. port.
venomrx7 is offline  
Old 03-07-2004, 04:23 PM
  #15  
Senior Member
 
j9fd3s's Avatar
 
Join Date: May 2002
Location: California
Posts: 22,465
Default

Originally Posted by Jeff20B' date='Mar 7 2004, 12:18 PM
I'll think about the finger (peninsula) port for a while.



Oh my goodness; is it what I think it is?
if you're thinking what i think you're thinking then yes thats what you think it is!
j9fd3s is offline  
Old 03-07-2004, 06:35 PM
  #16  
Fabricator
 
Lynn E. Hanover's Avatar
 
Join Date: Jan 2004
Location: Central Ohio (Hebron) Zephyrhills Fla.
Posts: 1,322
Default

Originally Posted by Jeff20B' date='Mar 7 2004, 12:18 PM
I'll think about the finger (peninsula) port for a while.



Oh my goodness; is it what I think it is?
I think you have it. If you felt a little sick there foe a second or so.



The beauty of IMSA was the nearly nonexistant rule book. No additional ports. That leaves quite a bit of room. I ran a big street port in RS, and we got to see the leaders many times in a 3 hour race as they rocketed by. Mostly Mazdas.



THe BF Goodrich tires would last all year. If you finnished the race they gave you back more than the entry fee.



They would tear down the first place cars at the next event. ??????? Hey, that makes sense. So everyone could cheat as much as they wanted. Could do anything as long as it was not dreadfully obvious. So you pay people to finish. And you can do almost anything you want.



The point was that spectators want to see many cars racing, not 5 or 6 in one class. So they got what they wanted. We started 67th out of 67 cars in our first ever race at Road Atlanta. I didn't know about that stock 4 BBl in the RX-2.



Jim Downings crew took pity on us and helped with the carb setup. We had 19th in the bag when we pitted for fuel late in the race. We finished 23rd, of 60 cars.



There were as many finger port styles as there were people doing them. I don't know if IMSA ever made a judgment on them or just gave up on enforcement.



A "J" bridge port with one, or two breaks in the bridge, and those segments supported on sections of iron extending into the port from the inside wall of the runner. The area between the "flying butresses" was the added port area. So long as the corner seal didn't fall into the port (the object of the bridge) it ran fine.



Like one or two fingers reaching in from the runner to support the corner seal.



Lynn E. Hanover
Lynn E. Hanover is offline  
Old 03-07-2004, 09:10 PM
  #17  
Senior Member
 
Jeff20B's Avatar
 
Join Date: Nov 2001
Posts: 2,284
Default

This is sort of what I imagined.
Attached Thumbnails Exhaust Housing Temps-bridge.gif  
Jeff20B is offline  
Old 03-07-2004, 10:39 PM
  #18  
Senior Member
 
venomrx7's Avatar
 
Join Date: Dec 2003
Location: Mississippi
Posts: 464
Default

thats some cool stuff, how would it be for reliability?
venomrx7 is offline  
Old 03-08-2004, 01:53 AM
  #19  
Senior Member
 
Jeff20B's Avatar
 
Join Date: Nov 2001
Posts: 2,284
Default

This one would have better support for the corner seals.
Attached Thumbnails Exhaust Housing Temps-bridge03.gif  
Jeff20B is offline  
Old 03-08-2004, 02:03 AM
  #20  
Senior Member
 
Jeff20B's Avatar
 
Join Date: Nov 2001
Posts: 2,284
Default

How about this one? The casting at the top of the port is quite thick so the bridge would have plenty of support. Am I getting warm?
Jeff20B is offline  


Quick Reply: Exhaust Housing Temps



All times are GMT -5. The time now is 06:44 PM.