Dudes, I want to put my girlfriend on my KLR, take her to the mountains and make love to her there. But the engine is very weak for two people. How can we make it more powerful?
@Oldbmwr100rs Yes. The V-Strom seems to be the best option. I am looking at few of them that are for sale as we are typing. Thank you for your suggestion.
@DecaPierce In this case, the valve is being used as a check valve, allowing crankcase pressure to be pushed out, but not allowing air to be drawn in. The idea is to always have a negative pressure in the crankcase to reduce crankcase pumping losses.
Waste of time & energy. That little check will quickly fail. If it fails in the open postion, you'll probably never notice. If it fails in the closed position, now you're screwed. As for all those bs hose clamps, have fun constantly re-adjusting them or replacing them after they break from corrosion.
I have read about this on the forums and I am probably going to do this soon. Have you been able to notice an increase in performance with this mod?
Now that it has been a while since you added this, would you do anything different if you had to do it over again? (i.e type of clamps, position of valve, etc.)
I did some other mods around the time I did this one, so I can't comment on increased performance. With the other mods and this one, I think (!) there is a slight performance boost. But that could also just be in my head.
As Xtreme pointed out in the forum, the valve can be mounted in any orientation and still do what it's supposed to. Had I known that earlier, I probably would have put it in the angled part of the tube, that way it wouldn't butt up against the airbox, but it still works.
I'm pretty content with the hose clamps I used (#10 if I recall correctly). I also like the idea of keeping the overall hose length the same, ie: making two cuts in the hoe rather than just one.
Going back to performance: I doubt my bike was burning any oil to begin with, and it sure isn't burning any noticeable amount right now, and I use it mostly for highway (75 - 85 indicated mph, 5000 - 6000ish rpm) which is where a lot of people report that they have to add oil regularly.
Did the bike not come from the factory with this valve? This one way valve won't stop water from entering the crank case since vacuum is holding the valve open. Nevermind water in the crankcase though, if you get water in your aircleaner you have bigger problems. I don't see how you are changing anything from the intended purpose of this pipe. It is meant to burn hydrocarbons which wind up in the crankcase, reducing emissions and also eliminating pressure from within.
No, it did not come with a PCV valve from the factory. As I have yet to take one of these engines apart, I can only comment on how I think it works, so it might not be entirely accurate: as the piston goes up, it creates a negative "pressure" - a vacuum, which closes the valve. Then when with the power stroke and blow-by gas, there is a positive pressure that opens the valve and lets the pressure out.
I don't plan on fording any bodies of water deep enough to get water in the airbox.
Love the video! Has anyone found this PCV valve in Australia?
ohmitchiebabe 1 month ago
those big hose clamps don't look very elegant, do they.
theklrdude 1 year ago
I have a 2009 and it gets oil thirsty from time to time, someone mention that I should d this mod so does it really help? where can I find the part?
nagrain 1 year ago
Dudes, I want to put my girlfriend on my KLR, take her to the mountains and make love to her there. But the engine is very weak for two people. How can we make it more powerful?
shasha1873 1 year ago
@shasha1873 read the manual no more than 400LBS on that bike, so either u or ur gf or pushing it
sithlord2003 1 year ago
@shasha1873 Get lighter girlfriend.
EvanVittoriano 10 months ago
@EvanVittoriano LOL... OK. That is the same thing my dad told me.
shasha1873 10 months ago
@shasha1873 Buy a V-Strom.
Oldbmwr100rs 8 months ago
@Oldbmwr100rs Yes. The V-Strom seems to be the best option. I am looking at few of them that are for sale as we are typing. Thank you for your suggestion.
shasha1873 8 months ago
which direction does the air flow before and after?
DecaPierce 1 year ago
@DecaPierce In this case, the valve is being used as a check valve, allowing crankcase pressure to be pushed out, but not allowing air to be drawn in. The idea is to always have a negative pressure in the crankcase to reduce crankcase pumping losses.
Oldbmwr100rs 8 months ago
How can I put a V-twin 1000 Suzuki engine in my KLR?
shasha1873 1 year ago
Very carefully and with a running start.
ghotioutofh2o 1 year ago 3
@ghotioutofh2o But dude, will it fit?
shasha1873 1 year ago
Yes, probably... if you do some major frame re-working.
ghotioutofh2o 1 year ago
@shasha1873 I'd like to see someone put the Versys motor in a KLR.
klrbiker 1 year ago
@klrbiker Very good idea man. That would be even better and easier to do.
shasha1873 1 year ago
why did you add the pcv valve what is the inprovement?
ladymissd995 1 year ago
what benifit do you get??? not power" i want to know...
ALLTHEDORKS 1 year ago
The same valve from auto zone; blew out ,the clutch cover gasket on my 05,@ about ,the12:30 posiition. Took it out! Seemed to bog about 75 to 80 mph.
TheXxmaa 1 year ago
What is the purpose of the PVC mod?
leftystrat62 2 years ago
Thanks! By the way, Schnitz racing highly recommends this mod for the KLR.
oober2ber 2 years ago
Thanks for going to the trouble to do this.
jzorns 2 years ago
this rubber thing is important .. it keeps it tight and keeps water from getting in your air box and the proper name for it is rubber seal
dende145 2 years ago
Waste of time & energy. That little check will quickly fail. If it fails in the open postion, you'll probably never notice. If it fails in the closed position, now you're screwed. As for all those bs hose clamps, have fun constantly re-adjusting them or replacing them after they break from corrosion.
roadrage638 2 years ago
very cool! but what are the benefits of having an exhaust not suck in air?
thomashamiltom 2 years ago
What is the brand or part # for the valve? O'Rilley couldn't find a valve with the proper dimensions.
transistor281 2 years ago
Please check the video description, 3rd block of text.
ghotioutofh2o 2 years ago
do i need to put a pcv valve on your bike?
spuck1234 3 years ago
Nope, I've already done it.
ghotioutofh2o 3 years ago
I have read about this on the forums and I am probably going to do this soon. Have you been able to notice an increase in performance with this mod?
Now that it has been a while since you added this, would you do anything different if you had to do it over again? (i.e type of clamps, position of valve, etc.)
bklein453 3 years ago
I did some other mods around the time I did this one, so I can't comment on increased performance. With the other mods and this one, I think (!) there is a slight performance boost. But that could also just be in my head.
As Xtreme pointed out in the forum, the valve can be mounted in any orientation and still do what it's supposed to. Had I known that earlier, I probably would have put it in the angled part of the tube, that way it wouldn't butt up against the airbox, but it still works.
ghotioutofh2o 3 years ago
I'm pretty content with the hose clamps I used (#10 if I recall correctly). I also like the idea of keeping the overall hose length the same, ie: making two cuts in the hoe rather than just one.
Going back to performance: I doubt my bike was burning any oil to begin with, and it sure isn't burning any noticeable amount right now, and I use it mostly for highway (75 - 85 indicated mph, 5000 - 6000ish rpm) which is where a lot of people report that they have to add oil regularly.
ghotioutofh2o 3 years ago
Good write-up Jamie.
Did the bike not come from the factory with this valve? This one way valve won't stop water from entering the crank case since vacuum is holding the valve open. Nevermind water in the crankcase though, if you get water in your aircleaner you have bigger problems. I don't see how you are changing anything from the intended purpose of this pipe. It is meant to burn hydrocarbons which wind up in the crankcase, reducing emissions and also eliminating pressure from within.
daverbmxer 3 years ago
No, it did not come with a PCV valve from the factory. As I have yet to take one of these engines apart, I can only comment on how I think it works, so it might not be entirely accurate: as the piston goes up, it creates a negative "pressure" - a vacuum, which closes the valve. Then when with the power stroke and blow-by gas, there is a positive pressure that opens the valve and lets the pressure out.
I don't plan on fording any bodies of water deep enough to get water in the airbox.
YMMV.
ghotioutofh2o 3 years ago