Welcome to the XS-650 Garage USA
« 2-2 vs. 2-1 exhaust »

Welcome Guest. Please Login or Register.
Sept 2, 2010, 5:58pm




Welcome to the XS-650 Garage USA :: Engine :: Everything Engine / Drivetrain Related :: Modified Engines :: 2-2 vs. 2-1 exhaust
   [Search This Thread][Send Topic To Friend] [Print]
 AuthorTopic: 2-2 vs. 2-1 exhaust (Read 952 times)
OldBlue
Full Member
***
Senior Member at Large
member is offline





Joined: Feb 2004
Gender: Male
Posts: 244
Location: Livonia, MI
Karma: 0
 2-2 vs. 2-1 exhaust
« Thread Started on Sept 27, 2004, 8:17pm »

Has anyone ever made a valid performance comparison between 2-1 and 2-2 exhaust. I'm guessing that a 2-1 makes more power, but who nows.

2-2 look much better to me. I suppose just replacing the stock double 1 1/8" ID headpipes with 1 3/8" would help a lot, either way.
« Last Edit: Sept 27, 2004, 8:18pm by OldBlue »Link to Post - Back to Top  IP: Logged
Diesel
Senior Member
****
Senior Technical Advsior
member is offline

[avatar]


[homepage]

Joined: Mar 2004
Posts: 369
Karma: 0
 Re: 2-2 vs. 2-1 exhaust
« Reply #1 on Sept 28, 2004, 5:54am »

The problem with my R&D is that I don't have the time or money to go out and do dyno runs if i change anything. I have to carefully monitor how my motor performs against some of my competitors who have fast motors and have the means to know what type of hp figures they're getting.

With that said I think a 2-1 can make more power if tuned properly but the power would be high in the rev range. A 2-2 seems to provide more power in the midrange than a 2-1 but loses a little to the 2-1 at higher rpm. I've found that midrange power to be more useful. I roadrace so there are lotsa turns and being able to apply usable power just past the apex of a turn, which there are more of than high speed straights, makes for quicker lap times.

« Last Edit: Sept 28, 2004, 5:55am by Diesel »Link to Post - Back to Top  IP: Logged

The most notable difference between racing and sex is that with racing, you are encouraged to be quick and finish first.
   [Search This Thread][Send Topic To Friend] [Print]

Check out our Frappr!
Google
Webxs650temp.proboards.com
Click Here To Make This Board Ad-Free


This Board Hosted For FREE By ProBoards
Get Your Own Free Message Boards & Free Forums!
Terms of Service | Privacy Policy | Report Abuse | Mobile