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I have a 2001 Triumph adventurer that I changed the mufflers on. It sounds way better than the sewing machine noise it had with the original baffled flared pipes. they are strait trumpet style pipes and look and sound great now but upon acceleration and deceleration I can hear and feel it hesitate and pop. I know I have to change the main jets on the carbs but was wondering how much bigger should I go? I have read that the mainget is a #98 and the pilot jet size is a #38. Just don't want to keep buying and swapping out jets..cuz the pulling the carbs can be a b!#$^.

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Go one size bigger on main jet.

Posted on Jul 13, 2013

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If you are not running an open or free flowing exhaust go back to the stock size jets but use the DynoJet parts instead of the stock.
DJ jets tend to run bigger than oem jets

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SOURCE: 1993 Triumph Trophy 900 Help I need the Carb main

is this a 3 or 4 cylinder engine - can you give the exact cc, i have some data but not sure if its right.

Posted on Jan 24, 2010

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1 Answer

Ticking noise under car sounds like its somewhere in the muffler system never done it before


it prob it the muffler. there are baffles inside and one of them has prob come lose.

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I have a 2006 Royal Star Tour Deluxe with a 1300 V4 engine.I would like to know if the existing stock mufflers have any kind of removable baffles or anything that could be removed to effect the sound of...


loud sound is attractive to only the rider and will attract the ire of the neighbours and the law
another point , if the manufacturers thought that a modified muffler was good for the engine , the loud mufflers would be already fitted but as the design of the mufflers also includes economy and engine life that means that a balance of economy , engine reliability and noise is struck in the factory

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Ocasional backfire


Yes it could but i dont under stand why it would cost so much usually you can change the muffler for $200 to $300 it sounds like hes trying to rip you off

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1 Answer

I need to replace the muffler on my Stihl BG 65 blower as therepairman left the baffle off and it sounds like a Harley.


Is this a 4cycle blower or 2 cycle ? if its a 2 cycle the baffle plugs up from low grade 2 cycle oils, so he prob. pulled it out because your eng would not rev up cause of it being plugged, he should be able to find you one, personally I would run with it the way it is...the better your eng breathes...the better it runs!

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1 Answer

Will taking the baffles out of my 2007 Harley Davidson Sportster effect the engines performance any?


A motorcycle engine is a finely tuned system. If you change anything on the system it will effect everything else in the system. For instance, if you remove the baffles from your mufflers, it may cause the engine to run lean. You may have to rejet the carb if you do this. You might want to check you state laws as well. In some states (or countries) if you remove the baffles it's against the law. Personally, I'd much rather replace the original mufflers with a set of high performance "slip on" mufflers. The engine needs a little backpressure to run correctly. If you remove the baffles, you may not have enough backpressure on the exhaust system and this can cause a "dead spot" around 55 to 60 mph. The bike's throttle response will be less than normal.

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1 Answer

How to take baffles out of standard exhaust?


Inadvisable. The stock exhaust system and the engine jetting / calibration are balanced for the best"compromise" performance. Removing the baffles will change the exhaust pressures and upset things. It may sound more powerful because it will generate more noise but that's all. If you want a better sound AND better performance change the complete exhaust system and have the induction system matched to the new pipes.

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1 Answer

Removing baffles


When removing such things or even changing exaust system, make sure carb jets are reset. Or if your bike is fuel injected to have it reprogramed.By changing exaust flow you change intake flow.

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1 Answer

Oil


Most oils are preferential, but don't use car or low friction special oils in your bike, and beware of detergent oils if you don't know the service history, they will break down in a bike and can dislodge accumulated crud. To be safe10/40- 20/50 Motorcycle oil for engine/ part synthetic if you like, but not a necessity sae 80s gearbox, Dot 4 clutch and prepacked branded long life coolant with integral lubricant for cooling.

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1 Answer

1999 Monte Carlo


sounds like a fuel management problem. the catalytic converter is getting to hot due to tryin to burn off the excess fuel not burned. causing the muffler to overheat get it scaned at autozone for free. sounds like a o2 sensor runnin lean dumpin more fuel. or a bad mass airflow sensor good luck

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