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Reed Valves

Wess

Wess

Member
Member
I have been reading the following thread on the other site and just wanted to verify the information with y'all. Not that I don't believe the other guys its always best to check pluse I can cause some activity here. http://forum.concours.org/index.php?topic=46322.0 Thanx for your wisdom up front! Respectfully Yours! Wess Heavner COG #8010 CDA #0239
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Hey Wess, I'm no mechanic (but all the pros are here) but I have read lots of threads about this in the last couple years... and when my valves got done at a tech session, the subject came up. And what I recall is this: Yep it's fine to do exactly what they're talking about in the thread you linked. I believe the only reason to leave that stuff where it is (which I did, as Colin was helping me) is that it does help a bit with the polution situation. But maybe you'll get the experts here, to explain the pros and cons better :) Oh, and yeah, a pro is definitely that, the valve adjustment procedure is one step easier. (And I agree, for me that would prolly make it worth it.)
 
It takes less than a min or 2 to remove the 4 bolts and take the whole assembly off when your doing the valves. I pull the vac line off at the air valve and leave the other hoses attached to the caps on the valve cover then just pull the hose out of the air filter housing, with the coils and wires out of the way already its really no big thing. Like Fly said over there it does help with the unburned gas in the exhaust and it helps prevent backfire or popping on decel. CT AAD COG #7011-A 2003 Concours-Mary Ann 1995 Honda Nighthawk 750 wifes
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This is why I am asking guys so keep advising please Respectfully Yours! Wess Heavner COG #8010 CDA #0239
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If as Norm says, that it helps reduce backfire and popping on decel, then I am all for leaving them on there. -- My Connie always had pop on decel until I took to the stealer and had the first valve adjust done. Since then its never done it. I have done the valves since then and still never done it. -- Personally I like the smoother sound versus the popping sound and would leave them in place if it makes that start happening again.
 
These reed valves are for emission laws in the USA. Canadian models do not have them. They send crankcase vapors through your carbs into the cylinder to be burned.Plugging them up will have no effect on the performance of the engine. It will keep your carbs cleaner. The breather on top of the gear case also vents into the air box but on the "dirty side" meaning it goes through the air filter before it hits the carbs. Which,by the way,is responsible for the oily mess often found inside the air box. The crankcase needs ventilation so don't plug that vent.
 
My reed valves are long gone, and no apparent affect on how the bike runs whatsoever. It might contribute a small amount of polution, but maybe not as much as an Escalade or similar. How bout a diesel?
 
Geez, I thought we were starting a thread on two-strokes! You remember them don't you? Eddie 2005 Concours 1969 Triumph Bonneville AMA# 686667 COG# 7073 CDA# 0136 http://picasaweb.google.com/Eddie753
 
Geez, I thought we were starting a thread on two-strokes! You remember them don't you? Eddie I remember an ugly blue 1972 H3 that is still the fastest thing out of the hole I have ever ridden. Respectfully Yours! Wess Heavner COG #8010 CDA #0239
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Testing new signature Respectfully Yours! Wess Heavner COG #8010 CDA #0239
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now? sorry guys is there some way for me to delete these? Respectfully Yours! Wess Heavner COG #8010 CDA #0239
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rowmer, The reed valves do not route any engine gasses anywhere. What they do is allow fresh air from your airbox into the exhaust just past the exhaust valves to aid the completion of the combustion process so that fewer unburned hydrocarbons come out of the exhaust. They have no effect on carbs whatsoever other than the vacuum line that connects from the carbs to the vacuum valve on top of the valve cover. As long as the diaphragm in that vacuum valve and as long as the vacuum lines are in good shape, there will be no effect on the carburetion of the engine whatsoever. Just an FYI. Running the turbo necessitates removing them and tapping and plugging the passages in the head to prevent the high back-pressure developed between the head and turbine to bleed off. I have also pulled them from a NA bike and had zero adverse affects from doing so. No popping on decel, etc. Just my .02
 
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