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Discussion Starter · #1 ·
Hi everyone
Has anybody changed the velocity stacks on a gen 4 to move the torque curve higher in the rpm.
Map Font Parallel Slope Rectangle
im considering buy the outer stacks from a 2020 z1000sx part number 14073 in the picture because their alot shorter than our z1000's. I'm presuming they should be a straight swap due to my understanding of the z1000sx being very similar to our bikes. Also has anyone got any good tips or proof of performance increases with doing the air box mod because considering doing that as well while I'm in there.
 

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Discussion Starter · #3 ·
Not done that but i did come back from the Dyno yesterday having done the airbox mod about 9 months ago....5bhpthrough the whole range...noticeably different on the ride home...in a good way...
Your post about the airbox mods was what made me consider doing it so I appreciate you doing that as there's not alot of information out there
 

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I knew it was good as soon as i went out on it...felt much snappier and seeing as it was taking in much more air i knew the mapping would be out but me just telling people wasnt enough......so went back on the dyno to prove it......just waiting for him to mail me the graph - dont want to pester him though....
 

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I knew it was good as soon as i went out on it...felt much snappier and seeing as it was taking in much more air i knew the mapping would be out but me just telling people wasnt enough......so went back on the dyno to prove it......just waiting for him to mail me the graph - dont want to pester him though....
Have the airbox alterations impacted adversely on fuel consumption? The Z is quite a thirsty bike when used in anger!
 

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Cant say as ive only rode it home at the moment...having said that (for me) the zed has always been really good on fuel - especially when motorway riding....
 

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Cant say as ive only rode it home at the moment...having said that (for me) the zed has always been really good on fuel - especially when motorway riding....
Yeah,I found it very economical too with 'normal' use! I just wondered if pushing more air/fuel through lost any of that frugality.
 

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Discussion Starter · #9 ·
So the stacks finally turned up today its probably going to be a little while till I get them fitted because of Christmas and I have to move houses in January hopefully I'll have them on along with some other parts plus the airbox mod and full exhaust and get it booked in for a tune in maybe February
 

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I'm anxious to see how you like these and I'm looking forward to your "other" parts. Winter sucks and I enjoy reading about everyone's projects when I can't ride, myself.
 

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Discussion Starter · #11 ·
I need a favour from someone with a z1000 2016 or newer but the more years the better. I need a picture of the throttle bodies as I am pretty sure the throttle bodies on my 2021 z1000 are oval and the snorkels I have are from a 2020 z1000sx and they are circular. So they might not work for me but if it can be worked out if they might fit earlier z1000's then at least someone might benefit from this
 

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Motor vehicle Gas Audio equipment Automotive design Machine

Here are the throttle bodies. These are the same as what's on the ninja 1000 from 2011-2019 and the z from 2011- present. The part number changed a few times, but the basic throttle body never did. These are from a zero mile 2016 z 1000. I bought them because......I don't know. I just hit buy it now, back in 2018, and really have not figured out why.

The easiest and cheapest way to do this is to find a used airbox, on eBay. I think my spare box was 24.99. The box from the 2014-2016 ninja is probably the same as what you have,stock.

A 2011-13 box would give you two long stacks, and two short. After that,Kawasaki switched that bike to 4 medium stacks

Now that you mention it, the 2020 ninja 1000 went to the ride by wire system. They changed the throttle bodies when they did that? Go figure.....I dont know much about the 2020 z 1000as we did not get those in America. It looks like you need the older pieces.
 

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Discussion Starter · #13 ·
I spent a good couple hours yesterday scouring the internet for as much as I could find and came across the same stuff. It seems there really just isn't that much information out there about our bikes and the aftermarket never really embraced it. I'm going to order the 2013 small stacks and it looks like partzilla has them in stock as well and 67 usd for 4 plus shipping is cheap enough to have another go. I must admit I may start looking for a crashed 2020+ z1000 sx from now because the idea of converting the z1000 over to ride by wire and getting a autoblipper is quite appealing but in the meantime these stacks will have to do
 

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Discussion Starter · #14 ·
I did some more digging and came across this thread
It's from the ninja 1000 sx forum but I feel like it would be relevant to us here. It's got alot of r&d in there like turns out the earlier zx6r velocity stacks will fit as well.
And that the early 2011-2013 intake cam may be a cheap and good upgrade for us as well.
Also their is some really in depth looks at the stock airboxes and the changed over the years.
 

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Discussion Starter · #15 ·
So I finally got the smaller stacks ordered today. I'd meant to do it earlier but I was in the middle of moving houses without knowing exactly where is was moving to so hopefully in a couple weeks I should have them and be able to test them out
 
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