hook up carbs

siasmaster said:

Freakinout said:

I gotta disagree with the previous post about the emissions stuff.

If you have removed the stock airbox, DO plug up the holes for the emissions, those would normally go back into the airbox.

Now as for how to hook up your carbs on the 600 somebody else will have to help you out there.

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In my experiance the hole in the top of the case is the crankcase vent to atmosphere. Since the crankcase is completly sealed, it needs somewhere to vent to so pressure does not build up. Now if it would vent out to the airbox why would he want to plug the hole, IMO that would just create unnecessary pressure in the crankcase and possibly blow a seal.

I mean no offense but I don't follow your logic.

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Strictly VN 1600 said:

We aren't talking about the same thing here. The holes ninjazx6r described are for crankcase vent purpose only. All those oil fumes when engine warms up and moving mechanical parts generate pressure inside the crankcase housing. The vent holes are one type of "pressure valves" that lead oil fumes into the airbox and will be mixed with fuel/air - mixture.

If these holes are plugged, the pressure will blow the weakest gasket or leak oil out of the engine...from one way or another.

There are valves that guide fresh air into the exhaust manifold, but these are often controlled with some type of valves. Vulcan owners know what I'm talking about... There can't possibly be single holes that are always open for letting air into the exhaust system... Think of the noice that would occur..

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