【Z1R Season 3】Deliberately using the Zephyr 400 stock carburettor (CVK30). Aiming for the ultimate street Z with an air cleaner box setup.

I’m back again (；∀；)
Once I ride it, there are so many things that feel lacking and need improvement.

There are other things to do this time too,
but first I’m going to change the “Keihin CVK30 to an air cleaner box setup.”

My precious ones keep leaving the nest (；∀；)

This CVK30 is one I acquired thinking I’d use it on a GPZ550.
If I do say so myself… it’s quite a good find…

I’m going to overhaul this and prepare to install it on the Z1R.

I gave it a quick spray with my favorite Wako’s carburettor cleaner.
It’s in good enough condition that it doesn’t need wet blasting, so I’ll finish it as is this time.

I keep making ordering mistakes (；∀；)

Oops? I forgot to order the starter valve…

I thought I ordered them, but I’m short four O-rings….
I wish there was an easy ordering form where I could just click and order.

I’ll finish it with inspection and cleaning.

Even Keihin-class carbs have this.
Everything’s slightly off. There’s a precarious edge where it catches the seal area.

I polished up the parts I’m reusing.

I’m reusing the float valve. Compared to some junk… it’s the same!
You learn a lot from studying junk like this, and since it’s not made by a motorcycle manufacturer, going upstream…
it’s reasonably priced.
It’s well designed.
I think about it fondly.

So it’s done quickly. I really think carbs are Keihin…
And the appeal of a simple carb with no unnecessary parts is great too.

After this, air cutoff valves and such get added, which increases the parts count,
and if rubber parts or passages go wrong, I can’t even imagine what bad effects or symptoms might occur.
I think simple is best every day.

So installation is done just like that.

It won’t fit as is, but with a little modification it looks clean like this.
Now it’s modernized.
The carb is easy to remove and install, so I’ll do fine adjustments from here on.

The spool-up is very slow, so I thought about quick-action conversion… but the holder itself is too tight, so it won’t work.
Since it’s a throttle, bad modifications could be dangerous, so I’ll leave it as is this time.

I haven’t test-ridden it yet, so it’s completely unknown.
• Throttle cable inner length needs shortening
• Air cleaner box snout mounting
• Carburettor adjustment

So it continues (‘Д’)