kz1000 velocity stack question - Kawasaki Motorcycle Forums
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post #1 of 5 (permalink) Old 04-16-2017, 10:15 AM Thread Starter
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kz1000 velocity stack question

Hi, I am new to this forum. my bike is a 1980 kz1000 LTD I am considering using velocity stacks with nets or nylon covers to prevent dust or other contamination from getting into the engine. The stacks I am looking at are 44mm ID x 61mm Long
62mm bellmouth opening, If I go this route what sort of jet size do I need to change to and is the tuning as much of a pain as tuning pods?
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post #2 of 5 (permalink) Old 04-16-2017, 01:16 PM
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I tried what you are talking about many years ago, velocity stacks with material form nylon stockings covering them. The nylon did not allow enough air flow, K&N pod style air filters work much better, and much safer for keeping dust and dirt out of engine for street use. If you are running at a drag strip, run the velocity stacks open as they were intended to be used, keep covered when not in use.

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post #3 of 5 (permalink) Old 04-16-2017, 08:26 PM
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Velocity stacks are not a great idea. Too much crud gets through and wears the jet needles very quickly. Use air filters of some sort.

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post #4 of 5 (permalink) Old 04-17-2017, 06:38 PM Thread Starter
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thank you for the responses I think I will stick with the stock air box.
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post #5 of 5 (permalink) Old 04-18-2017, 08:14 PM
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The stock airbox simplifies jetting questions BUT makes the carburetors more difficult to install/remove. Buy some NEW air box rubbers and this will help greatly. When installing the carbs, I coat the intake manifolds with WD40. Wait till you have the carbs out of the boots and pulled to the side (usually the right side as you sit the saddle) and then remove the throttle cables; much much easier and only one throttle cable is really needed; the pull cable as the spring to return the slides on a VM assembly is up to the task of closing the slides. The only advantage to using the push cable is that you have a spare if the pull breaks.

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