Forced Induction/Nitrous Technical discussions for all power adders - turbos, superchargers, NOS

understanding compressor maps

Old February-15th-2003, 08:22 PM
  #1  
Half-assed sport 20
Thread Starter
 
eeterp's Avatar
 
Join Date: Oct 2001
Location: Greenbelt, MD
Posts: 564
eeterp is on a distinguished road
understanding compressor maps

can anyone post a link or guide understanding compressor maps like this one

http://www.turboneticsinc.com/comp_maps/fig1.html

regards
eeterp is offline  
Old February-15th-2003, 08:37 PM
  #2  
Salt addict
 
midnightblue97's Avatar
 
Join Date: Aug 2002
Location: Niagara Falls Ont.
Posts: 1,201
midnightblue97 is on a distinguished road
Originally posted by PseudoRealityX
you need to figure out the CFM your engine needs. Then look at the amount of boost you want to run. You then look on your graph, and hope to god its in the most efficient range.
Just for my own knowledge, how do you figure out how much cfm my engine needs??
How about a tech article??
midnightblue97 is offline  
Old February-16th-2003, 01:21 AM
  #3  
Protege Enthusiast
 
PinkMX-3's Avatar
 
Join Date: Feb 2002
Location: Gainesville, FL
Posts: 87
PinkMX-3 is on a distinguished road
Originally posted by midnightblue97

Just for my own knowledge, how do you figure out how much cfm my engine needs??
How about a tech article??
There is a tech article on this very subject. It's in "Maximum Boost" by Corky Bell.
PinkMX-3 is offline  
Old February-16th-2003, 02:26 PM
  #4  
Half-assed sport 20
Thread Starter
 
eeterp's Avatar
 
Join Date: Oct 2001
Location: Greenbelt, MD
Posts: 564
eeterp is on a distinguished road
units on the map. what is the pressure unit on the Y-axis? (p2c/p1c)

The x-axis is lb/hr. How do I convert that to cubic feet per minute (CFM)?


*I'm guessing to figure out an engine's CFM needs you'll need a flow bench.
eeterp is offline  
Old February-16th-2003, 06:43 PM
  #5  
Protege Enthusiast
 
PinkMX-3's Avatar
 
Join Date: Feb 2002
Location: Gainesville, FL
Posts: 87
PinkMX-3 is on a distinguished road
Originally posted by PinkMX-3


There is a tech article on this very subject. It's in "Maximum Boost" by Corky Bell.
PinkMX-3 is offline  
Old February-19th-2003, 01:05 AM
  #6  
Half-assed sport 20
Thread Starter
 
eeterp's Avatar
 
Join Date: Oct 2001
Location: Greenbelt, MD
Posts: 564
eeterp is on a distinguished road
Originally posted by PinkMX-3
Is that your reply? Why bother, unless you're Mr. Bell's publisher. I plan to pick up the book...eventually. Maybe google will offer more insight. sheesh.
eeterp is offline  
Old February-19th-2003, 12:38 PM
  #7  
Protege Enthusiast
 
PinkMX-3's Avatar
 
Join Date: Feb 2002
Location: Gainesville, FL
Posts: 87
PinkMX-3 is on a distinguished road
Originally posted by eeterp


Is that your reply? Why bother, unless you're Mr. Bell's publisher. I plan to pick up the book...eventually. Maybe google will offer more insight. sheesh.
That is my reply, because that is the BEST answer to your questions. I feel that book is the best source for answering basic turbocharger questions like you're asking. Not only will it answer your questions, but it will help you to understand the concepts to answer further questions.
PinkMX-3 is offline  
Old February-19th-2003, 01:42 PM
  #8  
Salt addict
 
midnightblue97's Avatar
 
Join Date: Aug 2002
Location: Niagara Falls Ont.
Posts: 1,201
midnightblue97 is on a distinguished road
I plan on picking it up as early as next week perhaps.
midnightblue97 is offline  
Old February-19th-2003, 06:15 PM
  #9  
Half-assed sport 20
Thread Starter
 
eeterp's Avatar
 
Join Date: Oct 2001
Location: Greenbelt, MD
Posts: 564
eeterp is on a distinguished road
Originally posted by PinkMX-3


That is my reply, because that is the BEST answer to your questions. I feel that book is the best source for answering basic turbocharger questions like you're asking. Not only will it answer your questions, but it will help you to understand the concepts to answer further questions.
Understood. I first thought you were being flippant, but I can see that some of this requires lenghty explanations (like Jesse stated). No sense in rewriting a book. I'll pick up a copy per suggestion. thanks.
eeterp is offline  
Old February-19th-2003, 10:07 PM
  #10  
Mr. Butlertron
 
SedanMan's Avatar
 
Join Date: Mar 2002
Location: Montreal, QC
Posts: 414
SedanMan is on a distinguished road
Originally posted by eeterp


Understood. I first thought you were being flippant, but I can see that some of this requires lenghty explanations (like Jesse stated). No sense in rewriting a book. I'll pick up a copy per suggestion. thanks.
I bought the book. Its very informative and I think you will find the information you need about flow charts.
SedanMan is offline  
Old March-10th-2003, 11:23 AM
  #11  
Half-assed sport 20
Thread Starter
 
eeterp's Avatar
 
Join Date: Oct 2001
Location: Greenbelt, MD
Posts: 564
eeterp is on a distinguished road
Originally posted by eeterp
units on the map. what is the pressure unit on the Y-axis? (p2c/p1c)

The x-axis is lb/hr. How do I convert that to cubic feet per minute (CFM)?


*I'm guessing to figure out an engine's CFM needs you'll need a flow bench.
Ah-ha, the Y-axis is (boost pressure / compression ratio)
so the turbo FS-DE guys are looking at

8psi / 9.1cr = 0.879

is a VE of 85% reasonable?

anybody use this website: http://www.turbofast.com.au/tfcalc.html

*BTW, I'm getting THE BOOK in April.........
eeterp is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
vielster
3rd gen Engine/Drivetrain
0
October-13th-2004 02:13 PM
MX-T
Forced Induction/Nitrous
2
June-21st-2003 05:27 PM
Bruce95fmla
2nd gen Engine/Drivetrain
3
May-29th-2003 01:03 AM
pin0yi30y
Forced Induction/Nitrous
7
March-5th-2003 02:00 PM
PinkMX-3
Forced Induction/Nitrous
0
February-7th-2003 12:41 AM

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

Thread Tools
Search this Thread
Quick Reply: understanding compressor maps



All times are GMT -5. The time now is 08:20 PM.