The reason for routing the smog this way, I was told from an inside source that it works better routing the crank to the valve cover, Im going to the dyno soon to find out which is better, nice to finally see a good response to this thread! Good luck everyone! let me know which is working better for you guys, however my bike runs great this way...

 

thats awesome. We run a dyno at our shop. Best results I have seen is the crankcase to the pair valve, and put a rubber cap plug in both spots on the airbox.

 

Yep..kory636 that's excactly how my gsxr1000 is done and i'm going to route my kawi the same way..Seems like much more air get's to the throttlebody's with those two plug's caped off at the Airbox as well..Thanks guy's for your help..

 

Yes I have ridden Cresson (3.1 Mile track)with LSTD (Lone Star Track Days) and now I am their Crew Chief for the Endurance Race Team. I'll be at the track a lot but most likely wrenching more that riding on raceday but will get in as many trackdays as I can.

Re: The Pair mod: Plugging the airbox sound logical but dont plug the crankcase breather or it may pressurize due to the hear expansion and blowby and blow a gasket or seal. You can install a small crancase filter on the end of the hose as mentioned earlier.

 

Kory636, when you run the crankcase hose to the Pair valve, do you plug the valve cover plate holes?I can definitely see the theory behind the RAM-Air effect on the crankcase. With the valve cover passages plugged, how does the excesspressure escape?

 

Speed, when the hose is ran to the valve cover you dont plug the valve cover ports, the excess air from the crank can then escape the crankase and go through the valve cover ports instead of having fresh air, its crank fumes, and the crank isnt as pressurized, I believe, and may free up a little quicker rev.

 

hey Tora, i did mine today and i rode it to work did really get over 60mph or so (traffic) but took some back roads home and ya it does seem to spin up quicker! No oil light or nothin..Sweet.maybe thursday night when we all go ride i'll really be able tofeel the difference.

 

Actually, routing the crankcase vent to the airbox doesn't make any sense especially with the Ram Air effect. The way you guys did it make better sense and it will burn the oil vapors buy sucking them in the exhaust. Maybe you'll see a very slight gain in HP on the Dyno (.1-.4 HP) but I don't believe it will be 2 whole HPand I can't say for certain. The pistons fighting a little pressurized air at those RPM's can make a difference.We will be taking the racebikes to the dyno soon so I'll have to do the mod and see if there is adifference. I'll be impressed. We just stuck Race Cams inthe bikes also. Hoping to top 120.1 HP!

 

Good to hear, hope it works well for all of you, just remember to be careful not to knock off any vaccum lines when doing this mod, it sucks Ive done it before, bike will run like crap!