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Rubber Side Down!
› Bought my first savage, got a few questions.
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Bought my first savage, got a few questions. (Read 246 times)
Eegore
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Re: Bought my first savage, got a few questions.
Reply #15 -
07/19/17 at 08:29:14
What makes the stock air filter box more efficient than a cone or other custom setup? Is it the pressure/flow setup from the shape?
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metalbrian45
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Re: Bought my first savage, got a few questions.
Reply #16 -
07/19/17 at 08:38:43
Great, thanks guys. I will give the dyna muffler a shot and check out the filter mod.
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Dave
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Re: Bought my first savage, got a few questions.
Reply #17 -
07/19/17 at 11:30:45
Eegore wrote
on 07/19/17 at 08:29:14:
What makes the stock air filter box more efficient than a cone or other custom setup? Is it the pressure/flow setup from the shape?
With the cone arrangement, the air flow is turbulent and misdirected as it enters the carb - and there is little or no established flow to help dampen the pulses of the intake air.
The stock airbox has a smooth length of tubing between the filter and carb that allows the air to establish an "average"flow that softens the pulses - and that allows more air to flow when you are using a lot of throttle (It also reduces the noise of the intake). Most modern engine builders tune the intake plumbing to maximize the air flow and reduce noise.
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justin_o_guy2
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Re: Bought my first savage, got a few questions.
Reply #18 -
07/19/17 at 12:40:05
Exhaust theory is something everyone knows exists. Intake theory is as valid. The charge is drawn in by a low pressure surge. Exhaust gas is at least positively pushed out. A correct volume of air between the filter and carburetor helps.
I'm not seeing the article I read.
https://www.bing.com/search?q=intake+design+theory&qs=AS&pq=intake+design+the...
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Re: Bought my first savage, got a few questions.
Reply #19 -
07/19/17 at 13:01:22
Eegore wrote
on 07/19/17 at 08:29:14:
What makes the stock air filter box more efficient than a cone or other custom setup? Is it the pressure/flow setup from the shape?
The stock carb has a port on the upper portion of the intake that greatly benefits a straight portion of duct leading to the carb.
There are a few pod filters out there that block this port entirely and the performance of the carb suffers.
Generally, if you put a straight duct the same length as the stock rubber ducky, performance is restored.
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batman
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Re: Bought my first savage, got a few questions.
Reply #20 -
07/19/17 at 14:29:44
performance can be increased beyond stock by lengthening the intake still further (my total intake is 17" effective length 18" I used 2" pvc ,inside a gutted, modified, stock air box. Filters moved to the outside of the box .the bike appears stock) total intake length is measured from the intake valve to the opening ,minus the radius of the intake tube. You should check out
www.phaedrus.me/id158.html
and
www.bgsoflex.com/intakeln.html
for more info.
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SALB
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Re: Bought my first savage, got a few questions.
Reply #21 -
07/20/17 at 11:28:01
metalbrian45 wrote
on 07/18/17 at 05:45:32:
I want to add a pipe with weld-in baffle as an exhaust instead of the stocker,
If you absolutely HAVE to have a drag pipe, take a look at the ones Raask and Blue Collar Bobbers (BCB) used to sell. Both had the baffle placed about where your right footpeg sits.
I can't help but ask, does it still have the original, 14 year old tires?
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metalbrian45
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Re: Bought my first savage, got a few questions.
Reply #22 -
07/20/17 at 11:49:09
It does have the origianl tires! I checked them out, they are still pretty supple. That's one of the first things I checked.
I also had another idea for a weld in baffle. Check the exhaust thread I just posted. Not quite a "drag pipe" as you put it.
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ohiomoto
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Re: Bought my first savage, got a few questions.
Reply #23 -
07/20/17 at 12:11:42
I would clean up the jetting with the stock or Dyna first. Then, once you have a baseline, experiment with you're idea. This way you'll know how bad, or not you're hurting the performance.
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