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Hi. Does anyone know of a CZ100 for sale at the moment, or better still does anyone know the whereabouts' of CZ100 436 WHN. Thanks Tom.

Hello
2 white tanks here 1963 fore sale
20k each

ordered one and came through correctly in grey as per picture. Ordered two more but when they arrived they are black. Its no good to me as the original were grey. Black was fitted to later years bikes but not mine.

Not sure what bike you have.

I am rebuilding a bike (1987 Honda VF700C) which has Keihin carbs.

There are two sets of pipes connecting them (ignoring the actual petrol pipe)

One set ventilates the float chambers so are not actually vacuum. I have not connected these to the air filter as pressure changes when the engine is running would upset the fuel levels in the carbs.

If that's what they are, ventilate them to somewhere that's "out of the weather" (toolbox or something)

In my case the bike was a "California Import" fitted with emission stuff which I have junked and it left a vent pipe into the fuel tank which I have used.

If they are genuine vacuum pipes then I would imagine that they are meant to operate a fuel shut off that stops fuel flowing unless the engine is running.

The pipes will fit to somewhere between the carbs and the engine (there should be some blanking screws which are used to attach vacuum gauges to so that you can synchronise the carbs - use those)

I would imagine if that is the case, there will be open 5mm tubes already fitted and obviously "needing" something (the pipes) fitting to them.

Or, you can do what I did, blanked off the vacuum pipes and just remember to turn off the petrol.

The only other thing that they might be (if they dont actually connect to the carbs) are vent pipes for the crankcase and they should be routed into the air filter.

Not sure what bike you have.

I am rebuilding a bike (1987 Honda VF700C) which has Keihin carbs.

There are two sets of pipes connecting them (ignoring the actual petrol pipe)

One set ventilates the float chambers so are not actually vacuum. I have not connected these to the air filter as pressure changes when the engine is running would upset the fuel levels in the carbs.

If that's what they are, ventilate them to somewhere that's "out of the weather" (toolbox or something)

In my case the bike was a "California Import" fitted with emission stuff which I have junked and it left a vent pipe into the fuel tank which I have used.

If they are genuine vacuum pipes then I would imagine that they are meant to operate a fuel shut off that stops fuel flowing unless the engine is running.

The pipes will fit to somewhere between the carbs and the engine (there should be some blanking screws which are used to attach vacuum gauges to so that you can synchronise the carbs - use those)

I would imagine if that is the case, there will be open 5mm tubes already fitted and obviously "needing" something (the pipes) fitting to them.

Or, you can do what I did, blanked off the vacuum pipes and just remember to turn off the petrol.

The only other thing that they might be (if they dont actually connect to the carbs) are vent pipes for the crankcase and they should be routed into the air filter.

Not sure what bike you have.

I am rebuilding a bike (1987 Honda VF700C) which has Keihin carbs.

There are two sets of pipes connecting them (ignoring the actual petrol pipe)

One set ventilates the float chambers so are not actually vacuum. I have not connected these to the air filter as pressure changes when the engine is running would upset the fuel levels in the carbs.

If that's what they are, ventilate them to somewhere that's "out of the weather" (toolbox or something)

In my case the bike was a "California Import" fitted with emission stuff which I have junked and it left a vent pipe into the fuel tank which I have used.

If they are genuine vacuum pipes then I would imagine that they are meant to operate a fuel shut off that stops fuel flowing unless the engine is running.

The pipes will fit to somewhere between the carbs and the engine (there should be some blanking screws which are used to attach vacuum gauges to so that you can synchronise the carbs - use those)

I would imagine if that is the case, there will be open 5mm tubes already fitted and obviously "needing" something (the pipes) fitting to them.

Or, you can do what I did, blanked off the vacuum pipes and just remember to turn off the petrol.

The only other thing that they might be (if they dont actually connect to the carbs) are vent pipes for the crankcase and they should be routed into the air filter.

i had just order this system yesterday for my 1978 CB550k honda, wanted to make sure this item is going to work on my bike, also I just want to say that I am glad that I came across your web site, because I am currently reworking my bike and did not know where I could get parts for it and now I know, so you will be hearing from me from time to time Thanks so much Tom

Hi, can anyone tell me where this pipe goes to after it leaves the t'piece on the carburetors, I have just bought 2 new t'pieces because the originals were broke but don't know we're the pipes go to, do they just hang down the back of the engine or do they connect onto the air box or somewhere else. Thanks in advance.
Andy.