mrsantafe
Zone Head
Posts: 521
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posted December 01, 2007 10:27 AM
zx14 crank in a zx12?
Will a crank from a zx14 fit in a zx12? Over on the Busa forums it works for new cranks in older bikes.
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9.78@155.13 mph 1.71 60 ft @ a near mile high dragstrip
2006 ZX14 gone
2006 ZX10r (Wifes street bike)
2004 zx10r (her race bike)
2002 ZX12 (still kicking a--)
2007 gsxr 1k (race bike)
  
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supra5677
Pro
Posts: 1279
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posted December 01, 2007 09:19 PM
yes.. just make sure you have a spacer plate..55.4 vs 61...
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KZScott
Needs a life
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Posts: 7235
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posted December 01, 2007 10:59 PM
supra, have you actually tried this? the bearings dont have the same part numbers for the crank, the spacing could be off too....
(dont want anybody to go out and buy a crank thinking that it will work if its not proven)
anybody have a side by side pic of the 2 cranks?
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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ZXLNT
Needs a job
Kawpuke Extraordinare
Posts: 2853
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posted December 02, 2007 04:49 AM
Man I bet its not even close.
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nstybluzx12
Parking Attendant
Posts: 19
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posted December 02, 2007 07:31 AM
crank swap
i would not think it work two totaly different motors
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supra5677
Pro
Posts: 1279
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posted December 02, 2007 08:10 PM
no haven't tried it. however 7 think it would work with minor tweekes
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KZScott
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posted December 02, 2007 08:43 PM
details on tweaks??? 
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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bigbore4
Zone Head
Posts: 806
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posted December 03, 2007 05:40 AM
Gotta tell you, Supra, that is the most retarded thing I have seen on this forum for a long time.
Do you even know anything at all about motors?
I believe if we go back in your previous post's it becomes evident that you know nothing.
You may have fooled some people, but now the cat's outta the bag.
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entropy
Moderator
Posts: 8671
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posted December 03, 2007 06:10 AM
quote:
Gotta tell you, Supra, that is the most retarded thing I have seen on this forum for a long time.
Do you even know anything at all about motors?
I believe if we go back in your previous post's it becomes evident that you know nothing.
You may have fooled some people, but now the cat's outta the bag.
WHOA!!!
that's pretty harsh..
Bigbore,
do you know for a fact that 14's crank will NOT fit??
If so, please just answer the man's question.
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bigbore4
Zone Head
Posts: 806
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posted December 03, 2007 07:47 AM
To answer SantaFe's question, which was reasonable, No, it will absolutely not fit.
As far as being harsh on Supra?
He spouts off about something he knows nothing of, and you say I am being a bit harsh?
Why do you suppose none of the pro's have jumped on the "Bolt in with a few minor tweaks" stroker zx14 / zx12 crank conversion?
If it would've worked I would have done it too.
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ZXLNT
Needs a job
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Posts: 2853
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posted December 03, 2007 08:07 AM
Define a "tweak"
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entropy
Moderator
Posts: 8671
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posted December 03, 2007 08:49 AM
I for one, am very curious
what is different?????
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted December 03, 2007 09:14 AM
Supra,
I am very serious with this question, not being a smart ass. Have you ever actually built an engine? I have a suspicion most of your comments are based on computer "simulations".
I've just been waiting for something really stupid like your comment above before broaching the subject.
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It's not that I think you're dumb, it's just that so much of what you know isn't true....
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entropy
Moderator
Posts: 8671
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posted December 03, 2007 10:25 AM
Doug,
Now I am really curious.
What is different????
starter gear in a different position? journal sizes?
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supra5677
Pro
Posts: 1279
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posted December 03, 2007 11:21 AM
First off.. The gentleman asked if you could put a larger stroked crank in a zx12r.. The answer is yes, but I don't think 61mm will clear the starter.. If a zx14 crank will fit in a zx12r, I don't think so. (possible changes in bearings or whatever). I didn't respond to the gentleman's question properly because I responded on a tablet pc with a pointer on a tiny keyboard.
As far as my background Iv'e only built the top end of an engine never had the cases split. As far as me being stupid I'm not sure what qualifies this statement but I will tell you my background. My profession is a high school economics and government teacher. My students go to colleges like Stanford, Cal, Brown and other prestigious universities. As you might know the industrial arts classes like auto shop and metal shop have been taken out of schools for years. If your interested in engines like me you learn with a book in your own garage and maybe some computer simulations. Mr. Meyer I think if you started some sort of program or schlarship for kids interested in engines or whatever you'd be doing our students a service.
Perhaps you might offer some advice to help the gentleman with his motor ( which is what the board is suppose to be about) rather than resorting to name calling.
supra
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KZScott
Needs a life
high on speed
Posts: 7235
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posted December 03, 2007 11:31 AM
quote:
First off.. The gentleman asked if you could put a larger stroked crank in a zx12r..
First off, he didnt ask if a larger stroked crank would fit in a zx12r. we all know this is possible. he asked if a zx14 crank would fit in a zx12r, like the 08 busa cranks fitting in the 99-07 busa(2mm stroker)
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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supra5677
Pro
Posts: 1279
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posted December 03, 2007 12:23 PM
okay..so I misunderstood his question.. sorry 
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dougmeyer
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moderated
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posted December 03, 2007 01:44 PM
Karl
Besides the bearings, how about bore spacing, primary drive pitch circle,..........
Supra,
Sorry, "stupid" was a poor choice of words. Maybe I should have said ignorant. You are clearly NOT stupid, but I do detect a certain ignorance regarding actual engine design and assembly. (Also see KZ's comment above)
Look, I think you know by now that I'm very focused on eliminating BS and transferring accurate information. What had me wondering about your posts was what I perceived to be an increasing aire of authority without an underlying suggestion of practical experience and testing. I actually do respect your curiousity and desire to learn about this stuff. But, I fear it may be a lot like economics (which I also find fascinating), not as simple as it seems. You (and I) have A LOT to learn.
Doug
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It's not that I think you're dumb, it's just that so much of what you know isn't true....
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entropy
Moderator
Posts: 8671
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posted December 03, 2007 02:11 PM
quote:
Karl
Besides the bearings, how about bore spacing, primary drive pitch circle,..........
yep, that's what would be interesting to find out.
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supra5677
Pro
Posts: 1279
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posted December 03, 2007 02:39 PM
To Doug M:
I have noticed that the true pros.. yourself, Y2K and other real engine builders don't respond to the post as much as I think is needed. Therefore I end up responding but I don't consider myself the authority by any respect... ( I know you guys are real busy).. cheers..
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Y2KZX12R
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CompetitionCNC.com
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posted December 04, 2007 04:56 AM
Sorry, I didnt respond because i've never been inside a zx14 engine. I know nothing about the bottom end of one.
Now the cylinder head, thats another story. 
I believe the bore spacing is the same. I have the two heads and gaskets here and had a fixture plate made that mounts both heads. The head bolt patterns are different but The bore spacing is the same.
1) If the main journal spacing and dia. is the same
2) If the primairy drive gear is the same pitch and dia. then that may work.
3) The rods will hit the cases so the cases would have to be monified.
4) The starter gear would be a problem hitting as well.
5) Mounting a flywheel and stator and having it fit could be a problem.
6) The ignition rotor and pickup could be a problem.
And thats just off the top of my head as i sit here now. There would be unforseen things also.
1 If the main journals are bigger on the 14 then they could be cut down to fit the zx12r. If there smaller (i doubt) then spacers could be used
3,4,5 and 6 could be worked around in a track only drag bike i suppose.
So that leaves you with #2. Thats a biggie. Theres workaround there also but they would be very expensive and difficult.
It woiuld be cheeper in the long run to buy a billet crank.
Remember, the only real reason it would even be desireable to put a zx14 crank in at all would be if it was a cheep non welded drop in like the 08 busa crank is supposed to be.
So the chances of it being as easy as dropping in the 08 busa crank into an older busa, is.... well..... slim to none.
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Y2KZX12R
CompetitionCNC.com
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entropy
Moderator
Posts: 8671
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posted December 04, 2007 05:42 AM
 Edited By: entropy on 4 Dec 2007 05:44
I finally just had to have an answer...
and the answer is NO WAY JOSE, the drive gear is in a different place on the 14 wrt the 12
zx12
zx14
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mrsantafe
Zone Head
Posts: 521
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posted December 04, 2007 02:07 PM
Well i was hoping it would work, scrap that idea.............
____________
9.78@155.13 mph 1.71 60 ft @ a near mile high dragstrip
2006 ZX14 gone
2006 ZX10r (Wifes street bike)
2004 zx10r (her race bike)
2002 ZX12 (still kicking a--)
2007 gsxr 1k (race bike)
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KZScott
Needs a life
high on speed
Posts: 7235
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posted December 04, 2007 09:08 PM
just send yours to Marine and build a 1394 
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted December 05, 2007 05:26 AM
quote:
I finally just had to have an answer...
and the answer is NO WAY JOSE, the drive gear is in a different place on the 14 wrt the zx12
Well, that answers that.
There ya go.
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Y2KZX12R
CompetitionCNC.com
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