Y2KZX12R
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posted October 18, 2007 04:13 PM
 Edited By: Y2KZX12R on 18 Oct 2007 17:17
ZX-14 cylinder head vs busa and 12r....
I spent an hour examining a zx14 cylinder head tonight.
The outer intake ports are indeed canted inwards much like a busa. But thats where the similarities end.
The sort turn raduis of the intake port is obviously not intended to flow a ton of air. Instead they are shooting the highest velocity center of the column of air at the back of the valve so as to shoot it thru the "window". They did a great job of fixing the chambers from the zx12r chambers. They lowered the eyebrow by widening the chamber instead of laying the eyebrow back like I had to do with the zx12r head.
The head is narrower in both directions, shorter, and weighs less. The head bolt patern in narrower but the spacing on the inner 6 is the same. The bore spacing is the same. The dowel pins are not. This means I'll need a different plate to mount it on the cnc head porting machine.
The exhaust ports are a big improvement over the zx12r and even more so than the busa. They increased the volume bigtime and increased the radius of the short turn.
I might try somthing pretty radical with the intake ports on this one and take a page from the Honda boys book at HRC.
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Y2KZX12R
CompetitionCNC.com
   
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osti33
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posted October 18, 2007 04:52 PM
Awesome!! Can't wait to see the results! 
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ZXLNT
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Kawpuke Extraordinare
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posted October 18, 2007 09:18 PM
Bob somewhere I read they said the ZX14 head was similar in design to a Cosworth head, and also mentioned it uses a tumble port design. I am no engineer by any means just repeating some internet "hearsay" so you know its accurate.. Lol..
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dubious
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posted October 18, 2007 09:56 PM
Dying to see, maybe buy the results!
Keep us posted.
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natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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Y2KZX12R
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posted October 19, 2007 06:00 AM
ZXLNT, Yea, its designed to tumble big time when the flow seperates from the short side.
Jim
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Y2KZX12R
CompetitionCNC.com
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted October 19, 2007 06:38 AM
Now that explains why the 14 feels just like a 12 in power delivery and the RPMs needed to get the 14 to perform!!!
Thanks Jim for explaining why the 14 is just like the 12 on the intake...I guess I wouldnt change the intake either, it would make the 14 a totally different bike to ride then!!!
By the way last week I rode a 2007 14 with Muzzy slip ons, 63inch wheelbase,16-42, flies out, and bike not fully strapped in front and in middle hole of rear link going a 9.38 @ 152 on pump gas!!!
If it wasnt for the tach and speedo, I thought I was on my 12!!!
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Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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Y2KZX12R
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posted October 19, 2007 10:19 AM
nice rick, not bad for just jumping on the bike!!! was that at the valley?
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Y2KZX12R
CompetitionCNC.com
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ZXLNT
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Kawpuke Extraordinare
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posted October 19, 2007 01:10 PM
quote:
ZXLNT, Yea, its designed to tumble big time when the flow seperates from the short side.
Jim
Crap where in the F did I get Bob from.
I know its Jim, must have had Bob on the brain..
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serius blk
Zone Head
Posts: 543
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posted October 19, 2007 05:23 PM
Keep us informed. I will be one of the first to send you my other head.
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Y2KZX12R
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CompetitionCNC.com
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posted October 20, 2007 03:20 AM
quote:
Keep us informed. I will be one of the first to send you my other head.
Right on! Stay tunned! The next few months are going to be interesting.
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Y2KZX12R
CompetitionCNC.com
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pete7r
Novice Class
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posted October 23, 2007 03:13 AM
update?
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Y2KZX12R
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posted October 23, 2007 08:44 AM
The busa head is done and the 14 head is being developed now.
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Y2KZX12R
CompetitionCNC.com
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dubious
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posted October 23, 2007 09:23 AM
Cool,
Might send ya my head too!
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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fish_antlers
Administrator
The Truth is Out There
Posts: 21894
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posted October 23, 2007 09:39 AM
Edited By: fish_antlers on 23 Oct 2007 10:46
Y2K... cool stuff.. but I need to caution you that you've got to buy an ad of some sort to support the community or posts like this will be removed...
You've been presented with several different advertising options, none of which you seem to like, and I can't help that... you're putting us in a really tough position since anyone else would have had posts like this one removed by now ...
we've been very consistent and even handed in enforcing these rules over the years...
if you want to talk about this stuff to promote your company you'll need to kick in to the pot to help keep the lights turned on...
sorry bro, hope you understand - but we need to be fair to all the other people who have done the same...
Please be respectful of the paying sponsors!
-Thanks!
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What business is it of yours where I'm from, Friendo?
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Y2KZX12R
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CompetitionCNC.com
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posted October 23, 2007 10:19 AM
Sorry Fish, Its not that I dont like the ad options, I'm just waiting for the guy doing the web site to get my banners done for the ad. Hes taking forever. Been months now....
I'll just sign up now and whenever he gets it done you can put up a spot for me then.
Sorry.
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Y2KZX12R
CompetitionCNC.com
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fish_antlers
Administrator
The Truth is Out There
Posts: 21894
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posted October 23, 2007 10:21 AM
no problem... it's making it tough for us, that's all!
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What business is it of yours where I'm from, Friendo?
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Y2KZX12R
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CompetitionCNC.com
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posted October 23, 2007 10:31 AM
I understand.... done, I just set it up.
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Y2KZX12R
CompetitionCNC.com
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Y2KZX12R
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CompetitionCNC.com
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posted October 23, 2007 11:51 AM
Hey, I like the graphic.  Thanks fish. I guess i can tell my web guy I'm all set. He's slow as tar.
Anyone know any good web site developers? I think i need a new one!!! Maybe one that owns a Busa and needs a CNC ported cylinder head?
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Y2KZX12R
CompetitionCNC.com
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fish_antlers
Administrator
The Truth is Out There
Posts: 21894
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posted October 23, 2007 12:00 PM
freek made that for ya!
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What business is it of yours where I'm from, Friendo?
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