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General Category >> Rubber Side Down! >> From straight pipe to muffler
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Message started by Chris Roth on 12/19/12 at 13:12:49

Title: From straight pipe to muffler
Post by Chris Roth on 12/19/12 at 13:12:49

I just finished my swap from the straight pipe exhaust to a wrapped header and Harley muffler. The bike now purrs and looks so much better, but a few things have changed.

I have a fair amount of popping and flames out the muffler between shifts and after revving. Adjusted Carb tuning screw in a half turn and its much better. Thinking the flow is reduced and running too rich.

I can literally feel it is slower to accelerate. Amazing to me I would notice it this much. The previous owner had the stock header cut before it tapered down before muffler and bend. It then had a straight pipe. That was too loud, too much vibration, and looked terrible (poor welds and had standard spray paint silver flaking off.)

Title: Re: From straight pipe to muffler
Post by Serowbot on 12/19/12 at 17:01:42

Yer' jets are probably too big...

Title: Re: From straight pipe to muffler
Post by Chris Roth on 12/19/12 at 18:45:43

5345524F57424F54200 wrote:

Yer' jets are probably too big...

Using the stock Pilot and 150 Main Jet. I installed the flat K&N air filter and was trying to tune this setup. I have replaced the cut/welded header with another stock one and have it heat wrapped. I have actually burned a pair of pants, so felt wrap was needed, plus it looks better than the shades of blues my old pipe had.

Do you think turning in the Carb tuning screw a little would help further? I need to search for some Carb tuning threads... I am used to a car with an O2 sensor to help drive that.

Title: Re: From straight pipe to muffler
Post by jcstokes on 12/19/12 at 20:43:40

There's a thread Carb Jetting a Progressive Guide on page 3 of the tech section.

Title: Re: From straight pipe to muffler
Post by Chris Roth on 12/19/12 at 20:47:58

363F2F283337392F5C0 wrote:

There's a thread Carb Jetting a Progressive Guide on page 3 of the tech section.

Thanks a bunch for that. I will look into it. Added a link here so a future person searching may find a match.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1244217127

Title: Re: From straight pipe to muffler
Post by SALB on 12/19/12 at 20:58:42

It's also under the Table of Contents with Links at the top of the Tech section. 8-)
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1181745927