Author Topic: just wondering  (Read 1824 times)

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Offline Dale_Eads_FL

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just wondering
« on: October 19, 2008, 12:20:00 pm »
Is it possible to put a zx12 motor in a c10?  

Offline Colt45

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just wondering
« Reply #1 on: October 19, 2008, 07:26:00 pm »
Don't know, but Dan Bergmen put a ZRX1200 engine in one!  
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Offline Steve in Sunny Fla

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just wondering
« Reply #2 on: October 20, 2008, 12:08:00 pm »
 I would have to say no, for several reasons. first, the zx12 is a downdraft head, the conie frame mandates a sidedraft head. Second, the zx12 crankcase is a redesign from the zx11, so I doubt there will be allowance for mounting the bevel drive assy. The zrx12's power is more atuned to the weight and general uses of the connie, and pulling HP out of the zrx is reasonably easy. Steve   Shleper of the 7th gear unit and performance exhaust cam sprockets.       My bike - "SHOODABEN" - 1109cc's of what an 04 concours "shoodaben"!
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Offline Colin

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just wondering
« Reply #3 on: October 20, 2008, 10:28:00 pm »
Steve you have my curiosity piqued..  whats the difference between a downdraft head, and a sidedraft head?    Inquiring minds want to know :)    CP    Colin Prior  Cogmos Committee Chairman  Lake Forest Park WA  COG#7767  
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Offline norm-9688

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« Reply #4 on: October 20, 2008, 11:41:00 pm »
I know I know !!     The down draft head is angled in an upward position with the head leaning forward so the throttle body's point more upward than the the position the carbs are in on the C-10 motor. The angle would prohibit the engine from fitting with the throttle body's inside the frame. The C-10 has a single tube on the upper frame while the other bike has a 2 tube on the perimeter with space in the center for the intake and the throttle body's.  CT AAD  COG #7011-A  2003 Concours-Mary Ann  1995 Honda Nighthawk 750 wifes  

Offline Colin

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« Reply #5 on: October 21, 2008, 10:22:00 am »
Ok got it, thanks.  I guess the down side is a leaking float valve floods the engine, with nasty results....  Colin Prior  Cogmos Committee Chairman  Lake Forest Park WA  COG#7767  
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Offline Steve in Sunny Fla

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just wondering
« Reply #6 on: October 21, 2008, 08:19:00 pm »
Not really, Colin. The carbs used on downdraft heads have the bowls level and the throats angled, kinda funky loking. More importantly, they all are fed by fuel pumps, so there's no chance of a hydro. Steve   Shleper of the 7th gear unit and performance exhaust cam sprockets.       My bike - "SHOODABEN" - 1109cc's of what an 04 concours "shoodaben"!
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Offline Bergmen

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« Reply #7 on: October 24, 2008, 08:22:00 pm »
Like this?        JMHO    Dan  
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Offline oldsawfiler

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« Reply #8 on: October 24, 2008, 09:19:00 pm »
absolutely beutiful Dan  Good to see you posting here.  Been missing the discutions between you and Rev and SISF    1990 Aint she a pretty Tomato (the bike ofcourse)  wedshots albums   http://community.webshots.com/user/sawfiler64/albums/most-recent
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Offline Tony Shelver

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just wondering
« Reply #9 on: October 25, 2008, 04:17:00 pm »
Actually, the ZX12 motor and the ZX11 are totally different.  You must be thinking about the ZZR1200 motor, which is a direct descendant of the 11.    The ZX12 is derived from the Ninja 600 / 900 series as far as technology goes, and is mounted in a totally different frame design (monocoque).  It is also fuel-injected.    I've got a ZX12, and while it is a great motor to ride, the significant downside is the fuel consumption.  I almost never get more than 33 - 34 mpg (90-octane minimum) even though I have a steady throttle hand.  Abusing it puts mileage well down into the 20s.  

Offline Steve in Sunny Fla

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« Reply #10 on: October 26, 2008, 04:54:00 pm »
the difference we're I'm meaning about is in the head design - the zrx is a sidedraft, the zx11, zzr12, and zx12 are all downdraft. a couple are carbed, the zx12 is injected, but they still all are downdraft. i did "mis-state" is as being crankcase. See, I learn from polititians -  steve     Shleper of the 7th gear unit and performance exhaust cam sprockets.       My bike - "SHOODABEN" - 1109cc's of what an 04 concours "shoodaben"!  
« Last Edit: October 26, 2008, 04:56:00 pm by Steve in Sunny Fla »
C-14 ECU flashing for performance and rideability enhancement
C-10 Carb work , cams, & performance enhancements
 " Modifications for sport-tourers, BY a sport-tourer"
https://sites.google.com/site/shoodabenengineering/home