Race Car Tech Discuss anything related to road racing and auto X.

Optimum EGT range for a S5 13B

Old 11-01-06, 03:15 PM
  #1  
Senior Member
5 Year Member
Thread Starter
iTrader: (1)
 
Join Date: Oct 2006
Location: wisconsin
Posts: 519
Likes: 0
Received 0 Likes on 0 Posts
Optimum EGT range for a S5 13B

Hi,
me again, I am planning on using the Racing Beat race apex seals, the carbon ones, in my ITS car next season and it seems these dont like pre det. or high temps. Anyone have a exhaust gas temp that is where she would want to be? If I am wrong about the needs of the seals tell me im a moron, thanks again fellas.
bean13 is offline  
Old 11-01-06, 03:21 PM
  #2  
Rotary Enthusiast
iTrader: (1)
 
Join Date: Jul 2004
Location: Rocket City, Alabama
Posts: 1,035
Likes: 0
Received 1 Like on 1 Post
On my 13B PP motor with carbon apex seals, I see about 1680 deg F. Jim Downing told me that was a little too high for him to feel comfortable.
speedturn is offline  
Old 11-01-06, 05:06 PM
  #3  
Senior Member
5 Year Member
Thread Starter
iTrader: (1)
 
Join Date: Oct 2006
Location: wisconsin
Posts: 519
Likes: 0
Received 0 Likes on 0 Posts
How much lower would be safe, 1500??? Thanks.

Also,what's PP, i have seen that before and not sure what it stands for.
bean13 is offline  
Old 11-01-06, 05:31 PM
  #4  
Savanna Rx-7
 
Join Date: Jun 2004
Location: yokosuka japan
Posts: 1,562
Likes: 0
Received 1 Like on 1 Post
SP= street port (or side port for japan/Kangaroo and kiwi lands)
BP= bridge port, eyebrow cut above the main port to change timing
PP= periphereal port fill stock ports with devcon, and cut honking big holes in rotor houseing above where the stock ports would be thread in pipe port to taste

BP = 250~280 flywheel hp with power band starting around 4~5K up to 8K
PP = 300~350 flywheel hp with power band starting around 5~6K up to 9~10K when built right

RE= rotary engine
Search = looking for info with search button
reseach= rotary engine, searching for knowledge and the art of.

kenn
kenn_chan is offline  
Old 11-01-06, 06:15 PM
  #5  
www.lms-efi.com
iTrader: (27)
 
C. Ludwig's Avatar
 
Join Date: Mar 2001
Location: Floyds Knobs. IN
Posts: 5,106
Received 30 Likes on 23 Posts
Several factors influence EGT. With the advent of affordable wideband meters the use of the EGT gauge as a tuning tool is becoming obsolete. Take it to the bank that you will see peak torque with around 25-27* full adavance. Set this up on a load bearing dyno where you can see the effects of the adjustment in real time. In the same way use the wideband to set the engine up for rich best torque. There will be a range of a/f ratios where adjustment really doesn't have a large effect on power output. We've found that to be in the 12.5-13.5 range with out ITS engines. Setting it up on the rich side of that range allows for good power while being as safe as possible. Again, this should all be done on the dyno to verify your results.

With that you will end up with an engine that should give you three solid seasons at a minimum running 87 octane. Those seals are easily up to the challenge that the IT engine will provide.
C. Ludwig is offline  
Old 11-01-06, 06:56 PM
  #6  
Senior Member
5 Year Member
Thread Starter
iTrader: (1)
 
Join Date: Oct 2006
Location: wisconsin
Posts: 519
Likes: 0
Received 0 Likes on 0 Posts
Fantastic, thank you!! Keep the advice coming!!
bean13 is offline  
Old 11-01-06, 10:30 PM
  #7  
www.lms-efi.com
iTrader: (27)
 
C. Ludwig's Avatar
 
Join Date: Mar 2001
Location: Floyds Knobs. IN
Posts: 5,106
Received 30 Likes on 23 Posts
Call me and just have me build the engine and set it up for you.
C. Ludwig is offline  
Old 11-03-06, 01:22 PM
  #8  
Senior Member
5 Year Member
Thread Starter
iTrader: (1)
 
Join Date: Oct 2006
Location: wisconsin
Posts: 519
Likes: 0
Received 0 Likes on 0 Posts
wouldl if i could afford it.....racers budget
bean13 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Lou Byer
General Rotary Tech Support
19
05-07-19 02:02 PM
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM
DevinC7896
Race Car Tech
0
09-21-15 07:58 PM
RedBaronII
3rd Generation Specific (1993-2002)
4
09-20-15 11:29 AM


Thread Tools
Search this Thread
Quick Reply: Optimum EGT range for a S5 13B


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 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.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: