Does a stinger / chamber increase performance?

rankoz350 · 1st March 2006, 22:30

now thats concrete stuff.... can explain me on the 'reed' part and 'tuned length right' part....
I did ask mechanic for K&N filter, but he was like "no use" since the air filter is covered by the box n all that.....
help me on the above stuff arite!

cbr1000f · 1st March 2006, 23:04

reed valves are valves that flow fuel to your cylinders.
they operate on the principal of pressure in the cylinder and the charge sucks the fuel in thru them.
4strokes do not have valves,they have a camshaft that opens the ports at fixed durations.
here this might help

this is a basic reed valve.

and this is a four stroke valve

hope its of any help.

tavish.

janeckozzy · 5th March 2006, 16:03

an expansion chamber is not also called a 'stinger' the singer is that portion of the expansion chamber between the muffler and the end conical section.. it is a short straight section of pipe.check out this link for more info
http://www.motorcycle.com/mo/mcnuts/em-pipes.html

rankoz350 · 8th March 2006, 07:27

Wow that was an awesome website dude!

To summarize:

1. 4stroke engines use only free flow exhaust.... a plain pipe would work like any other thing u put for this baby's exhaust....... doesnt effect performance... just needs to put the spent exhaust gases out.....

2. 2stroke engines use the exhaust gases to their advantage, with the sound waves released during the combustion stroke, and the relevant energy released tuned according to the exhaust kit ( header, convergent, belly, divergent and stinger sections) to its advantage.

Thankz Janeckozzy

, Totally new knowledge...Coool....

But hey, Im no physics student, and so is my mechanic.
Can you tell me how they get to tune a header, convergent, belly, divergent and stinger sections of the exhaust system. Is it by trial and error method?

Also, which is the best rpm range you would like the chambers to kick in?

1st March 2006, 22:30	#16
rankoz350 BHPian Join Date: Jan 2006 Location: Ghusais - Bangalore - Dehradun Posts: 94 Thanked: 0 Times View My Garage	now thats concrete stuff.... can explain me on the 'reed' part and 'tuned length right' part.... I did ask mechanic for K&N filter, but he was like "no use" since the air filter is covered by the box n all that..... help me on the above stuff arite!
	() Thanks

1st March 2006, 23:04	#17
cbr1000f BHPian Join Date: Sep 2005 Location: Mumbai. Posts: 148 Thanked: Once View My Garage	reed valves are valves that flow fuel to your cylinders. they operate on the principal of pressure in the cylinder and the charge sucks the fuel in thru them. 4strokes do not have valves,they have a camshaft that opens the ports at fixed durations. here this might help this is a basic reed valve. and this is a four stroke valve hope its of any help. tavish.
	() Thanks

5th March 2006, 16:03	#18
janeckozzy BANNED Join Date: Mar 2006 Location: mumbai Posts: 57 Thanked: 0 Times	an expansion chamber is not also called a 'stinger' the singer is that portion of the expansion chamber between the muffler and the end conical section.. it is a short straight section of pipe.check out this link for more info http://www.motorcycle.com/mo/mcnuts/em-pipes.html
	() Thanks

8th March 2006, 07:27	#19
rankoz350 BHPian Join Date: Jan 2006 Location: Ghusais - Bangalore - Dehradun Posts: 94 Thanked: 0 Times View My Garage	Wow that was an awesome website dude! To summarize: 1. 4stroke engines use only free flow exhaust.... a plain pipe would work like any other thing u put for this baby's exhaust....... doesnt effect performance... just needs to put the spent exhaust gases out..... 2. 2stroke engines use the exhaust gases to their advantage, with the sound waves released during the combustion stroke, and the relevant energy released tuned according to the exhaust kit ( header, convergent, belly, divergent and stinger sections) to its advantage. Thankz Janeckozzy , Totally new knowledge...Coool.... But hey, Im no physics student, and so is my mechanic. Can you tell me how they get to tune a header, convergent, belly, divergent and stinger sections of the exhaust system. Is it by trial and error method? Also, which is the best rpm range you would like the chambers to kick in?
	() Thanks