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BIKELAND > FORUMS > ZX12R ZONE.com > Thread: ZX-12 detuned at factory NEW TOPIC NEW POLL POST REPLY
VincentHill


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posted October 19, 2006 11:59 AM        
Before I adjusted the valves or timed the cams, I was testing the stock and different length Velocity stacks and their effect on the power Curve. The engine made 179.3 HP with the Rubber Boots. The Long Stacks made about 2 more HP but smoothed the Power and torque curve. The Mixed made a lottle more and the Short made the most with the largest dips in the Power and torque Curve.



The deal is, the Bike made close to 180 HP Stock with the Pipe and PC3 and over 180 SAE RWHP with the Stacks. The #1 thing about the stacks was the fact that they were the "SAME" Size as the intake opening in the throttle bodies vs the Rubber Boots that remove 2 MM from the diameter and are not smooth.

Again, I still believe that the Boots offered enough restriction to make the 2 to 3 MPH DIfference

(Be Nice DM!! )

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supra5677


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Posts: 1279
posted October 19, 2006 12:25 PM        
Cool Vince. Does this make a difference on an 02? Thats the year I own. And
179 horsepower with a stock can is IMPRESSIVE

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Y2KZX12R


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posted October 19, 2006 01:07 PM        
He wasnt making 179 with a "stock" can. It was with a pipe and tuning.
The most I got from a "stock" can was 172, and a piped (muzzy) 12r went on the dyno 15 min after in front of hundreds of people (marcus dairy ct.) and made 167 hp.

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12r1


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Posts: 390
posted October 19, 2006 01:09 PM        Edited By: 12r1 on 19 Oct 2006 14:10
They ain't limited. My 2000 pulled my 250lb arse to Yellow Boxxed 190's , with authority. Not much more than a mile, either. Yeah, yeah, I know...I was prob high 180's at best. But the way it pulled HARD up to that point, is quite a feat. Honestly, quite shocking sometimes.On a downhill mile here, Ive swung da needle way past 200. That shit don't count, but it was great to feel how stable it was, and how easily I came back down to sane speeds.
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supra5677


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posted October 19, 2006 06:13 PM        
I didnt say limited. I said detuned from a higher tuning spec. The same thing Keith Parnell said.
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blitzkrieg


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Road kill = Free lunch.
Posts: 2044
posted October 19, 2006 06:36 PM        
I concur with you 12r1.

One thing that has always amazed me (and still does) about the A1 is how brutally capable the bike is.

I love my R1 in the twisties, but for sheer "plastic surgery required to get the smile off my face performance" there is no substitute for the zx-12r.

Funny thing is after 5 years (I bought my A1 as a leftover in 06/01) I love the bike as much (if not more) than I did on day one.

Doug - I hear ya. Oddly sometimes I've looked at the relative lack of popularity of the 12 as compared to some other bikes a blessing,

Any bike that is declared to be "the baddest" is sure to attract a fair share of squid's.

I'm not saying I haven't met a 12 guy or two that wasn't a little off, but generally speaking the people I have met at 12 rallies, forums, etc.. are a cut above the rest when it comes to experience and knowledge of the bike.

Thats perhaps what I love best about the 12. Generally owners bought them for what THEY know, not what a magazine said.
____________
"BTW....You need to get a girlfriend who's last name isn't .jpg"

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frEEk


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ummm... yeah
Posts: 9660
posted October 19, 2006 06:47 PM        
who is to say the bike that produced the higher numbers wasn't a power-tuned version of the main prototype? your continued talk of a de-tuned bike is purely semantics as doug has said several times. probably the 176hp version was detuned compared to another bike they had at some point. perhaps they chose to go with the lower peak HP "version" because it had a stronger mid range and was more reliable?

this is all a little like calling Shaw short because Yao is 5" taller.

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supra5677


Pro
Posts: 1279
posted October 20, 2006 12:10 AM        
the dyno graph in the red does show a PEAKIER power band. As I said before the bike
is less strong before 5500 rpms(usually indicative of a different cam profile, all cams have a specific
rpm range) which is where you spend most of the time in regular riding.
The STD bike in the blue does appear to have a more USABLE power band. These will be
my final inputs on this thread..thanks for everyones input..

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dougmeyer


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posted October 20, 2006 06:28 AM        
Again,
an example of some of the most intelligent discourse in the motorcycle industry.........

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GUNNER


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posted October 20, 2006 07:51 AM        Edited By: GUNNER on 20 Oct 2006 08:58
quote:
.

I love my R1 in the twisties, but for sheer "plastic surgery required to get the smile off my face performance" there is no substitute for the zx-12r.

.


I only wish I could still say this Blitz....... About the only thing I still haven't EVER found another bike to match about my 12R is LOOKS!!! The bike is beautiful to the eye in design and function......... The sad story is my 10R will denut the 12 in just about any situation you put them in. Bob I know you haven't rode the 12 in a long time so trust me here when I tell you that after the first ride you're going to be looking at her saying " Baby!!!! you put on a few pounds???" It's that noticable after riding the liter bike for awhile.. I'm even having crazy thoughts of selling my 12 and adding a second liter bike..

It's kinda like Doug posted about his ride on the 14 when he had to go home and tell the ol Girl that the love affair was over

Some good advise to people that tuely love their 12R. Don't go out and ride other stuff for any lenth of time.. I use to think my 12 handled well and wasn't really a heavy bike.. I was wrong.

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supra5677


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Posts: 1279
posted October 20, 2006 08:19 AM        
To Doug Meyer: how did you get 200 rwhp out of an 1140
zx11? thats amazing..

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blitzkrieg


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Road kill = Free lunch.
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posted October 20, 2006 04:46 PM        
Don't get me wrong Gunner, the R1 is fast, light and nimble.

I definitely prefer it in the curves.

But, I live in the big west. There are places I go riding that are 100+ miles just to get there.

IMO there is no better bike in the world to crank off 400+ miles a day than the 12.

There is more to it than that though. Out of all the bikes I've owned (and it's a pretty long list) the 12 is the ONLY bike that after a month I said "I'll never sell this bike". It was love at first sight and the honeymoon isn't over. I love the bike as much today as the day I brought her home.

My thoughts are the 12 is like Tina Turner. She may be getting older, but she's still sexy as hell and has better legs than most of the new girls on the block.

I don't commute on the bike or stuff like that, so every one of the 14K miles on her are special. Colorado, Wyoming, Nebraska, Montana, New Mexico, South Dakota. A lot of miles (often at much greater than legal speeds) between my butt and her Corbin.

Some people will understand this, some won't. That's okay.

My 12 ain't going anywhere. She's my baby.

She just has a little sister now from another wife.
____________
"BTW....You need to get a girlfriend who's last name isn't .jpg"

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dougmeyer


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posted October 20, 2006 05:14 PM        Edited By: dougmeyer on 20 Oct 2006 18:49
Supe,
Sorry,- I didn't say RWHP. I developed that engine before the DJ was perfected for steady state work. That was at the countershaft on a Stuska. Didn't mean to mislead. That's just what my sheets for that engine said.
But here are the highlights,
1140 cc
Custom 15:1 77mm Moly coated Cosworth pistons
Falicon thinned, polished, and knife edged crank (+3mm)
Falicon Knife rods
A cylinder head that was extensively ported and flow matched, angle milled, w/5 angle seats
Muzzy X3 cams (used with stock springs & Ti retainers)
Micropolished and moly coated gears
Windowed cases and sleeves
Windage trays
narrowed oil pump
41 mm flat slides
Perfectly sealed custom carbon fiber air box
Dyna Ignition and coils, surface gap plugs
Custom tapered Muzzy ZX-11 pipe

This was the same engine that, when installed in the EZ Hook Liner, went 304 mph.
D.

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GUNNER


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Posts: 5778
posted October 20, 2006 08:32 PM        
quote:
Don't get me wrong Gunner, the R1 is fast, light and nimble.

I definitely prefer it in the curves.

But, I live in the big west. There are places I go riding that are 100+ miles just to get there.

IMO there is no better bike in the world to crank off 400+ miles a day than the 12.

There is more to it than that though. Out of all the bikes I've owned (and it's a pretty long list) the 12 is the ONLY bike that after a month I said "I'll never sell this bike". It was love at first sight and the honeymoon isn't over. I love the bike as much today as the day I brought her home.

My thoughts are the 12 is like Tina Turner. She may be getting older, but she's still sexy as hell and has better legs than most of the new girls on the block.

I don't commute on the bike or stuff like that, so every one of the 14K miles on her are special. Colorado, Wyoming, Nebraska, Montana, New Mexico, South Dakota. A lot of miles (often at much greater than legal speeds) between my butt and her Corbin.

Some people will understand this, some won't. That's okay.

My 12 ain't going anywhere. She's my baby.

She just has a little sister now from another wife.


Bob I'll never be able to look at my 12 again without thinking of Tina Turner

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12r1


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posted October 21, 2006 05:42 PM        
I understand completely, Blitz
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supra5677


Pro
Posts: 1279
posted October 24, 2006 04:03 PM        
Does somebody have any inputs with these numbers:

32 38B 42L 50-54 R Are these measurements for the exhaust system in metric. 32 mm for the primaries, 38mm for the collector, 43L for 42 centimeters for the mid pipe and 50-54R for the exhaust canistor.. The webpage list this as a Dtitanium exhaust..

thanks.

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eric_the_jew


Expert Class
Posts: 266
posted November 02, 2006 07:24 PM        
quote:
Do you honestly think that there is some sort of implicit responsibility for a manufacturer to offer the combination that produces the maximum available power?


Absolutely!!!

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BIKELAND > FORUMS > ZX12R ZONE.com > Thread: ZX-12 detuned at factory NEW TOPIC NEW POLL POST REPLY

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