Question about 1977 Honda GL 1000 (K2)

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Exhaust system I want to get some good sound out of my GL1000 exhaust. I know if I run straight pipes I'll lose some performance but don't know how much. Could I minimize the loss by running cherrybombs or is there a better solution?

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I have the muffler pipes from a Harley Sportster on my 76 gl1000 and they sound great with no need to change the adjustments.

Posted on Jan 22, 2009

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You can run straight pipes, but you'll need to re-jet your carbs.

Posted on Nov 21, 2008

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1 Answer

Am i damaging my 03 Yamaha YZF 600r by running it with a guted D&D slip on exhaust?


Hi, Christine the only thing you are damaging is pedestrians ear drums for more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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Apr 06, 2012 | 2003 Yamaha YZF 600 R thunder cat

1 Answer

Ihave a 1979 1000cc sporty with a as supper e shorty carb that was revolt last winter it was running fine till last month it's been back fireing from the exhaust pipes and air filter the plugs are good...


Backfiring out of the exhaust pipes usually indicates an ignition problem. What happens is that the fuel air mixture in the cylinder is not burned and is exhausted into the exhaust pipes. The next time the cylinder fires and the exhaust valves open and allows the residual flame to exhaust into the pipe, it ignites the unburned fuel in the pipe from the previous misfire. What kind of igniton system is on the bike. And, spark plugs will foul within minutes in an Ironhead Sporty if the mixture is too rich. Your super "E" is still a quite large carburetor for that engine. It should have a #26.5 slow jet and a #66 main jet. Make sure that your accelerator pump is not adjusted to put too much fuel in the cylinder when you open the throttle. Go to S&S's tech site and download files 51-1012 and 51-1013. This will tell you everything you need to know about your carb. http://www.sscycle.com/instructions/instructionslist.php?x_cat=24 If you are running open drag pipes on your Ironhead, you don't have enough backpressure on the exhaust system and you've probably got a flat spot at about 55-60 mph. If so, look on the backside of the exit end of the pipes. There may be a hole in the pipe for the bolt to hold the baffles in the pipe. If this hole is open, install a 1/4" bolt that is 1 1/4" long in the pipe with three nuts on the bolt on the inside of the pipe. Put one of these bolts in each pipe. This will give you just enough backpressure to almost eliminate the flat spot and the bike will perform much better. Due to the hemispherical design of the heads, the Ironhead must have some backpressure. I hope this helps.

Good Luck and Ride Safe
Steve

Sep 11, 2011 | 1979 Harley Davidson XLS 1000

1 Answer

Stock 2007 heritage want to put pipes on. what needs to be done so it won' t damage the engine?


Put the pipes on the engine and then take it to a performance oriented shop that has a dynometer and an exhaust gas analyzer. Have them run the bike up and check the fuel mixture at all RPM ranges. If the mixture needs to be adjusted, they'll know what to do. That's the only thing that should need to be checked.

Good Luck
Steve

Aug 31, 2011 | Harley Davidson FLSTC Heritage Softail...

1 Answer

I can't get spark from my 2006 yz 125, i changed the spark plug and the coil. I also unplugged the kill switch to make sure that wasn't faulty. what else could cause me to not get spark? I also...


There are a lot of tiny fuel and air passageways in the carburetor that must be kept clean it order for your scooter to run right. Carefully, take the carburetor apart. This can be relative easy. The carb has tiny passages that can get gummed up. Your bike will not run correctly if the carburetor isn't completely clean, so take your time. I use a gallon container of carb dip (you can get a gallon at your local auto supply store).
First, remove all of the rubber and gaskets or they will get damaged. After a 20 minute soaking in carb dip, I blow out the carb with compressed air. You have to get all the jets and the passageways clean. Be sure the jets are clear, especially the starter jet. Sometimes carb cleaner won't clear out these tiny jets. Use a guitar or a piano string, a strand of copper electrical wire, or a tiny drill bit pin vise. Be sure not to increase the size of the hole in the starter jet or you'll change the tuning. Carefully reassemble everything, checking for cracks in the rubber carb boots and the gaskets. Replace them if they are old and cracked. Be sure and remove all rubber and gasket material first or they could get ruined. Spray carb cleaner also works if you're diligent.
If you have an electric choke, check it to make sure it works. Check the resistance between the wires - you should see around 10 ohms or less. Measure the length of the choke assembly. Remove the choke from the carb and plug the wires into a 12V source for 15 minutes. The choke body should be warm. Measure the length again - it should increase by around 1/8".
Next, consider whether your exhaust pipe is clogged. This is especially a problem with older two stroke scooters. The unburned fuel/oil mixture builds up in the exhaust pipe along with carbon over time. If the exhaust pipe is clogged, your scooter will run terribly or not at all. It can be difficult to tell if the exhaust pipe is clogged. The easiest way to tell is to remove it and try starting your scooter. It will be a bit loud - two strokes will sound like a chain saw. If it runs with the exhaust pipe off, you know that is the problem.
put a meter on the kill switch to see if you get voltage across it and check the magneto i would think that the contacts have gone rusty clean them with some fine sandpaper
also if the bike has been standing for a long time(six months or more) then replace the fuel because when its old it loses some flamabilty

hope this helps

John

Aug 25, 2011 | Yamaha Fuego 50 2T Motorcycles

1 Answer

I have a 2000 HD Roadking with a stock exhaust. How can I make the stock exhaust louder


The age-old Harley stigma:Louder is better.
We all love the Harley sound but to get loud you may sacrifice performance. There are numerous after-market pipes that will improve performance and change sound but you cannot really do both. Drag pipes are the loudest but would be lousy looking on your Roadking and you lose mid-range response. Pipes have to be tuned and it is an exacting science.
Best bet is to go to J&P Cycles website and look at all the pipes. Call their tech support and ask what they recommend.
Here is an excellent web site

http://www.nightrider.com/biketech/exhaust.htm

Jul 13, 2011 | 2000 Harley Davidson FLHR-FLHRI Road king

1 Answer

Why does the muffler make a popping sound it ...


This is what's called an oxymoron. Because with straight pipes there is no muffler! Haha. Sorta like Jumbo Shrimp.
But the cause of your popping sound is because of afterburn in the exhaust system. With no back pressure because of the straight pipes, some of your engines' combustion is happening in the exhaust. That is a super way to burn a valve BTW.

May 21, 2010 | Motorcycles

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.

Mar 23, 2010 | 2007 kawasaki ZRX 1200 R

1 Answer

My motorcycle came with Cobra pipes and these are


Im not very familiar with your specific bike, but I do know what your problem is.cobra pipes are usually a straight-through design, meaning they have no muffler. the ones that do have a muffler usually have a very small one. smaller mufflers mean less fiberglass packing inside to absorb all of that noise. if your not too concerned about performance, then your best bet would be to go back to a factory exhaust. thats going to be the quietest one that you can use. Im sure there are also aftermarket systems available that also use a good muffler for noise control, but pretty much any aftermarket pipe is going to be louder then the factory setup. they are designed to give your engine more performance, which means less restriction for the xhaust gasses, which also means more noise due to the more open design of the pipes. Im not sure if your bike comes carbureted or fuel injected, but keep in ind that any exhaust changes made to a carbureted engine will require carburetor jetting adjustments to compensate for the change in exhaust flow. now, if you decide that your willing to lose just a tiny bit of performance for a quieter ride, then you may be able to find a used stock system on ebay for a very reasonable price. or if you want to stay aftermarket, then most companies test the sound levels of their exhaust pipes. by contacting the manufacturers, you should be able to obtain and compare the sound decible levels for different exhaust companies to find one that meets your needs.

Jul 28, 2009 | 2002 Yamaha Road Star

1 Answer

Not running well at medium to high rpm


you say that it was running well was this before or after the installation of the pipes and rejetting I doubt that the problem is electrical more likely it is sucking air some where in the exhaust system check that the manifolds are firmly secured & that the the clamps secureing the mufflers to the pipes are also firmly secured finaly check that the jets have not worked themselves lose this can sometime happen if they were not tightened well at installation

May 05, 2009 | 2003 Yamaha V Star Classic

1 Answer

Ho w to remove the silencer of a 2008 kawaski ninja2 50r


Kawasaki engineers spend years fine-tuning exhaust systems for best performance, while staying legal. If you did what you propose, not only will you lose power, but you will also eventually burn out your exhaust valves from over-heating due to improper air backflow. Sure it might sound cool. But, is it worth it? You're much better off buying an aftermarket pipe. Either way, you MUST have your bike professionally re-tuned for best performance and reliability. Otherwise, you're just trashing your bike.

Apr 08, 2009 | 2008 kawasaki Ninja 250R

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