dbw - dirtbikeworld.net Members Forums

Go Back   dbw - dirtbikeworld.net Members Forums > The Workshop > Tech Talk

Tech Talk Proudly Sponsored by Mainjet Motorcycles

Reply
 
Thread Tools Display Modes
  #1  
Old 27-11-2016
capnbluetootharr capnbluetootharr is offline
DBW Clubman
 
Join Date: Apr 2014
Posts: 91
Airbox mods

When trying to reduce the restrictions of many ADR compliant airboxes the trend seems to be removing the snorkel and hacking massive holes in the top of the airbox .
So my question is .how much area needs to be opened up before no more performance gains are to be achieved .or what would be the minimum hole size . Is it the area of the carby throat + x% or piston size ect . Would double the factory opening be ample ?

Sent from my GT-I9300T using Tapatalk
Reply With Quote
  #2  
Old 27-11-2016
RMJay84's Avatar
RMJay84 RMJay84 is offline
dbw Pro Champion
 
Join Date: Feb 2006
Location: Perth
Posts: 4,855
3x3" is ample on a drz400

what bike is in question?
__________________
2014 TXT125 / 2011 200EXC / 2010 250EXC / 2002 XR70R
Reply With Quote
  #3  
Old 27-11-2016
capnbluetootharr capnbluetootharr is offline
DBW Clubman
 
Join Date: Apr 2014
Posts: 91
Thats exactly the type of answer im not looking for

Sent from my GT-I9300T using Tapatalk
Reply With Quote
  #4  
Old 25-10-2017
jaguar jaguar is offline
DBW Dweller
 
Join Date: Apr 2016
Location: Paraguay
Posts: 11
size

I would guess 1.2 times the carb area is the minimum.
Reply With Quote
  #5  
Old 25-10-2017
Rach's Avatar
Rach Rach is offline
dbw Factory Pro
 
Join Date: Oct 2012
Location: Central Coast
Posts: 696
This might be helpful ....
https://www.youtube.com/watch?v=o4ilE9WUXIE
__________________
__________
KTM 300 EXC 2018
KTM 250 EXC 2015
Freeride 250R - gone
KTM 350 EXC 2013 - (Dead - R.I.P. )
Reply With Quote
Reply

Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
DRZ airbox mods Chris S Suzuki Forum 3 14-06-2009 08:42 PM
yamaha 2007 wr250f airbox mods patto65 General Bike Related Discussion 5 01-09-2007 10:13 AM
CRF450X airbox mods - before they are even here! Keg Honda Forum 1 18-05-2005 07:10 PM
WR450 - airbox mods Bear Tech Talk 7 20-05-2004 03:11 PM
WR450F airbox mods Karnage Yamaha Forum 9 02-06-2003 05:46 PM


All times are GMT +11. The time now is 01:03 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.