I wouldn't leave it open because that is basically bypassing the air filter system and could have the side effect of dumping dirty air directly into your pistons and also could cause your bike to run like shit and backfire like a mofo.
Hello guys, I'm from Bulgaria. I started on bikes 30 years ago, I had mostly Russian motorcycles and a lot of Bulgarian production "Balkan" (before 1989 we were doing motorcycles before they destroyed the factory) in view of the fact that the state was in the sphere of influence of the USSR.
I saw that the subject was old but still revived. I own CB900F 2003 year Hornet 900 from several years, I made a Flapper Mod, I am very pleased with the result, even the fuel consumption fell a bit. Now I'm going to do this - remove PAIR Valves System. I've read a lot on the subject, but to ask if there's any danger of something spoiling on the motorcycle?
I'm thinking of changing the chain with racing conversion kit 520. I'm thinking of keeping the standard teeth 16/43 or putting 17/44?
Hi dan_koloff. Removing the pair valve system won't adversely effect the bike. No more popping on engine braking. Also gets rid of a lot of clutter on engine head. Cleans this area up well. There are two types of plates you can use. One type has holes underneath to take the valve screw heads so you have a bit less work. No need to remove screws.
I went with the 17/44 ratio and would recommend it. Bike feels better as far as speed and revs go in 6th gear. I didn't notice any loss of acceleration. Can't comment on the 520 chain as I'm running a 530. Plenty of guys run the 520 kit. I will give it a go next round of spockets/chain.
Good work on the flapper mod. I went and removed that valve as well and fibreglassed hole over.
What are the roads and traffic like where you live? Are there many hornet 900's around? Just asking cause I live in Australia and I'm curious.
Thank you very much for the information, I got it all. I'll do things step by step.
When the plates come, I will see exactly which model they are.
The roads have improved with us over the years. We have a unique and beautiful scenery, there are many good and long routes. But on most roads with a nice turns, the flooring is bad, but things are improving every year. There is a fairly large number of Hornet 600 (It's taken by a beginner for a first bike) and a little Hornet 900, the traffic is not big, except the capital...
NO code, just a lot of decel popping if you do not use the block off plates. Also I noticed on mine that the fuel smell was more pronounced but at the time I also changed to some of the Delkevik Carbon Fiber exhaust cans so it's hard to say if it was the pairs disconnect or the pipes that did that.
88 Blue Hawk (NT650) Project Pics - http://tinyurl.com/clw8h3q
2000 DL650 - Being ridden but make me an offer if interested...
2002 DL1000 V-Strom