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Advice for muffler (Read 87 times)
CanadianSavage
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Advice for muffler
07/19/19 at 13:23:19
 
Hi there, I'm looking for some opinions/advice on getting a new pipe for my 2004 savage. I'm looking at this one:
https://www.ebay.ca/itm/264164039024?ul_noapp=true
Would this be a good fit? The seller says the baffles appear intact, though he said the exhaust appears open all the way through.

This one also caught my eye

https://www.ebay.ca/itm/Harley-davidson-OEM-FACTORY-SLIP-on-muffler-pipe-6569...

I've got a K & N air filter coming and I expect to need to rejet with the addition of a new muffler.
I'm new to bikes so I'm open to suggestions.
Thanks!
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Hiko
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Re: Advice for muffler
Reply #1 - 07/19/19 at 18:12:22
 
I have a Harley dyna on my bike and love it

The one you show looks as though it is tab mounted The ones that have a slotted rail are easier to fit to our bikes

I cut and rewelded the inlet pipe on mine to make it 8 degrees offset to line up perfectly with the header and heat shield The heat shield covers the weld.
I used stainless steel stick rods so it came out tidy anyway
Worthwhile mod sounds and runs better
I am close to sea level and run a 150 main jet and 52.5 pilot
3/4 spacer on the needle
2 turns on the idle air jet
Very happy with it the bike is so much better
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Dave
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Re: Advice for muffler
Reply #2 - 07/20/19 at 03:57:39
 
Hiko wrote on 07/19/19 at 18:12:22:
2 turns on the idle air jet


Idle "fuel" screw

When a carb has the adjustment screw on the engine side of the slide (like the Savage).....it adjusts fuel flow and turning the screw out allows more fuel to flow and a richer mixture.

When a carb has the adjustment screw on the inlet side of the slide.....it adjusts the air flow and turning the screw out allows more air flow and a leaner mixture.
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« Last Edit: 07/20/19 at 07:49:17 by Dave »  

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CanadianSavage
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Re: Advice for muffler
Reply #3 - 07/20/19 at 07:45:46
 
Thanks for the advice fellas, I'll pick up some new jets.
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Dave
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Re: Advice for muffler
Reply #4 - 07/20/19 at 07:54:03
 
Go with as small of a pilot jet as you can and still turn the screw out less than 3 turns for proper idle smoothness.......and try and get the slide needle correct - as those 2 things control the fuel/air mix for most of your riding.  (Unless you do most of your riding at 3/4 - full throttle).

You will need to drop the idle speed down around 800 rpm to be able to adjust the idle fuel screw......then turn the idle speed back up to 1,100 rpm for proper oil pressure.  Try to spend as little time as possible when setting the fuel mixture....as the oil pressure is low and the engine is not getting any cooling air flow, and don't let it lean over on the sidestand as the oil does not get to the uphill cam lobe.  I adjust the mixture while sitting on the bike and holding it upright.
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MarkHB
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Re: Advice for muffler
Reply #5 - 07/23/19 at 13:47:42
 
Dave wrote on 07/20/19 at 07:54:03:
You will need to drop the idle speed down around 800 rpm to be able to adjust the idle fuel screw......then turn the idle speed back up to 1,100 rpm for proper oil pressure.  Try to spend as little time as possible when setting the fuel mixture....as the oil pressure is low and the engine is not getting any cooling air flow, and don't let it lean over on the sidestand as the oil does not get to the uphill cam lobe.  I adjust the mixture while sitting on the bike and holding it upright.


Why is it necessary to drop the idle? I'm still learning about these carburetor things...

And thanks for all the advice regarding idling; my blue exhaust header thanks you.  Smiley
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verslagen1
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Re: Advice for muffler
Reply #6 - 07/23/19 at 14:26:46
 
MarkHB wrote on 07/23/19 at 13:47:42:
Why is it necessary to drop the idle? I'm still learning about these carburetor things...


It's usually hard to discern a change in rpm at a higher rpm than a lower rpm.
If you can do it, fine.  But if you're having trouble, lower the rpm so you can easily tell.
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batman
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Re: Advice for muffler
Reply #7 - 07/24/19 at 05:19:01
 
The cone filter can also be a problem , be sure that the rubber facing the carb doesn't block any of the passages in the mouth of the carb.
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Re: Advice for muffler
Reply #8 - 07/24/19 at 06:03:02
 
----
verslagen1 wrote on 07/23/19 at 14:26:46:
It's usually hard to discern a change in rpm at a higher rpm than a lower rpm.
If you can do it, fine.  But if you're having trouble, lower the rpm so you can easily tell.

----

That makes sense. Thanks.
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