Author Topic: INTAKE/EXHAUST RUNNER LENGTH  (Read 431 times)

0 Members and 15 Guests are viewing this topic.

Offline CATDIESEL

  • 3 cube
  • *
  • Posts: 15
  • Karma: 1

  • Total Badges: 9
    Badges: (View All)
    One year Anniversary 10 Posts Karma Level 2 Topic Starter First Post
INTAKE/EXHAUST RUNNER LENGTH
« on: March 17, 2013, 09:07:29 pm »
has anyone here ever tried making intake/exhaust runners longer or shorter for more performance? i guess the exhaust would affect the performance the most? i have thought about decking the exhaust flange on the jug. also making some custom spacers to move the muffler away from the jug in 1/4" increments. any thoughts on this?

Share on Facebook Share on Twitter


Offline aclarke

  • Nitro Hotsaw
  • *******
  • Posts: 1676
  • Karma: 172

  • Total Badges: 25
    Badges: (View All)
    Fourth year Anniversary Third year Anniversary 1000 Posts Second year Anniversary Level 5 500 Posts
Re: INTAKE/EXHAUST RUNNER LENGTH
« Reply #1 on: March 18, 2013, 04:43:16 pm »
In general, longer intake will bias the tuning towards lower rpm.   Calculating the resonance frequency is beyond my ability but there may be some programs available to do this on two strokes....

Offline Al Smith

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2779
  • Karma: 181

  • Total Badges: 34
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Level 6 Seventh year Anniversary Sixth year Anniversary
Re: INTAKE/EXHAUST RUNNER LENGTH
« Reply #2 on: March 19, 2013, 04:14:39 am »
Resonant frequency on both the intake and exhaust is the ellusive pot of gold nobody has managed to acheive over any width of rpm range except a very narrow band .

 

Related Topics

  Subject / Started by Replies Last post
9 Replies
1743 Views
Last post November 16, 2014, 01:13:35 pm
by Cut4fun .
20 Replies
1456 Views
Last post November 09, 2013, 10:09:18 am
by Moparmyway
36 Replies
2100 Views
Last post November 28, 2018, 04:34:07 am
by Al Smith
8 Replies
509 Views
Last post August 07, 2014, 06:16:36 pm
by foragefarmer
3 Replies
480 Views
Last post September 25, 2014, 09:14:09 pm
by The Ripper
7 Replies
401 Views
Last post April 19, 2015, 10:07:34 am
by 1manband
5 Replies
492 Views
Last post September 17, 2015, 06:46:44 pm
by Cut4fun .
1 Replies
570 Views
Last post January 25, 2016, 11:21:00 am
by srcarr52
0 Replies
336 Views
Last post January 26, 2016, 07:57:11 pm
by Cut4fun .
1 Replies
383 Views
Last post January 16, 2021, 07:16:55 am
by Cut4fun .