mach111
Novice Class
Posts: 81
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posted February 17, 2003 11:25 PM
1270/gearing??
Can anyone with a 1270 kit tell me the best gearing for the 12.stock i like my 17/46,was the 17 tryed and too low for the 1270.
  
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Zhooligan
Moderator
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posted February 17, 2003 11:30 PM
It really depends on what you are looking for and your riding style. I ran a 17/46 and a 17/47 with my 1270. I run a 17/47 with my 1361. We really don't have to many wide open roads and I like the acceleration, good for drag racing etc. And the lower gearing lets youlug around in 3rd and 4th gear in town.
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To those who do not count their life in years, but in how life
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future; -- Youth is forever.
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kawachan
Pro
Posts: 1031
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posted February 18, 2003 07:15 AM
17/46 works good for me too!! Faster at the strip than 17/48, but I haven't tried other gears
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RED NINJAS RULE!!
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mach111
Novice Class
Posts: 81
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posted February 18, 2003 02:54 PM
i heard the 1270 kicks in at higher rpm's.i take it thats why you fellas can run the lower gearing without flipping over,even on a 1361!! a 17 tooth..
have you guys run the 1270/1361 on top end WITH the 17 gears and a gps?.if so is the top speed the same as stock motor?,i assume you just get there a little quicker.i'm talking about a daytime ride here,not track 1/4 mile speeds.say a 2-3 mile stretch.my 17/46 is good for 184 or so,and that is at the rev limiter in 6th.17/45=189.just curious if the 1270 is close.thanks.
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krexken
Zone Head
Posts: 732
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posted February 18, 2003 03:13 PM
Assuming only the bore is changed, the stock motor should be more peaky than a 1270. Generally speaking, as engine size is increased, the peak hp rpm should come down. I like my 16/46 on my 1361. I have a friend that picked up several mph with a 1361 kit over his stock motor. I don't do the high speed stuff too much though but I've tapped the limiter a few times in fifth gear before the traps.
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mach111
Novice Class
Posts: 81
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posted February 19, 2003 01:31 AM
thanks fellas.just curious as to what gearing i will need,and my hunches were correct.i too dont gear for 200 mph.i guess i will keep my 17/46,it works well on the road,and at the track as long as i am strapped.
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FastBikes4Life
Novice Class
Posts: 82
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posted February 21, 2003 09:35 PM
I'm new to this board and it sounds like you guys have a wealth of experience with modifications. Not long ago I posted a message (on zx12@yahoogroups.com) about my friend who's looking to get about 210-225 horses to the rear wheel of his 2002 ZX-12R. His bike is stock right now. He wants the power but he doesn't want any problems out of the bike and wants the bike to maintain its current driveability and handling. He's most interested in increasing displacement. Can you guys offer some help in this department?
RW
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Zhooligan
Moderator
Post Whore Extraordinaire!
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posted February 21, 2003 10:29 PM
A well done 1361 motor will get at or near 210 SAE. Getting more than that requires something like NOS or a Turbo. Depending on what your buddy is looking for it may be worht his while to spend about a little less then $400 and install a dry shot NOS setup. With a pipe, Power Commander, remap and a 40 horse dryshot he will be at or near 220 to 225. That is a cheap way to get serious horsepower. But Frankly I like my 1361 and when I want to get crazy I flip the switch and juice myself!
____________
To those who do not count their life in years, but in how life
has touched them in the past and how much it can hold in the
future; -- Youth is forever.
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Hells Dark Lord
Needs a life
living life, and loving it.
Posts: 7981
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posted February 22, 2003 11:11 AM
ok guys a new twist on things...I do a lot of riding, alot of around town, and highway. but I also spend a lot of time in North GA in the twisties. I have the full Muzzy system, PCIII, K&n filters, just ordered the adjustable timing advance from Muzzy, gonna take it to Kevin and have it mapped, just ordered the 17 tooth for the front....what should I run for a back? I am running stock on it now?
And now, what kind of advance can I run with out detonation, or starting problems...and still run pump gas, I am thinking 2 or 3 degrees??? comments anyone???
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When in doubt, lean farther and go faster....
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kawachan
Pro
Posts: 1031
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posted February 22, 2003 05:16 PM
Each bike is different...most work better from the 2.5 to 4.5 range. Bigger motors might like a lil more. Depends on the "factory" cam settings. Some bikes are just better than others....PERIOD. Kevin will be able to find out for you, but it is extremely time consuming (costly...ouch!) to tune an advancer and PC compared to a PC IIR. The DJ 250 will just work wonders with the analyzer and a good operator (such as Kevin!)
I ran 17/48 but some like just the 17 up front. Riding twisties, you might like the 17/47 too.
Pump gas will work fine.
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RED NINJAS RULE!!
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Hells Dark Lord
Needs a life
living life, and loving it.
Posts: 7981
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posted February 22, 2003 08:52 PM
cool, guess its gonna cost me a more than expeted, but that is ok, cause I want it right, and ya get what ya pay for......will stick to the stocker then for a rear and see how she does.....
Anyone got any more input before things get purchased?
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When in doubt, lean farther and go faster....
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mach111
Novice Class
Posts: 81
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posted February 24, 2003 12:05 AM
i would start out with the 17 first up front,than move up in back as needed.remember if you like top speed a 17/47 is only good for about 180-182m.p.h.,says my gps on a stock bike.
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kcadby
Pro
Posts: 1733
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posted February 25, 2003 11:44 AM
 Edited By: kcadby on 25 Feb 2003 11:45
Sounds like...as much as you (HDL) ride...just putting a 17 up front will be fine 
We run John's bike at 4* timing...
IF you think you want more gearing...it's easy enough to add a couple of teeth on the rear LATER if you want to and still keep the stock chain...
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