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BIKELAND > FORUMS > ZX-14.com > Thread: shift rpm NEW TOPIC NEW POLL POST REPLY
Thread: shift rpm
bm396racing


Parking Attendant
Posts: 18
posted June 18, 2009 07:55 PM        
shift rpm

What rpm do you guys shift at, I have a 08 with brock sidewinder and map and -1 front sprocket?

Thanks, Brian

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eklipse636


Needs a life
ZX-14
Posts: 6046
posted June 18, 2009 08:04 PM        
11000
____________
Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32

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carlsbadbusa


Parking Attendant
Posts: 20
posted June 30, 2009 09:28 PM        
my 14 has full exhaust map head work, i shift at 8500, thats where i get peak acceleration, any higher than that i get slower times. When i had no head work i shifted at 7,800sh and same thing. Even though my tuning shows a constant curve and gain, it levels of at that range. I also have an 08.
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gilberjj


Needs a job
Friend of Fast
Posts: 3189
posted June 30, 2009 10:54 PM        
quote:
my 14 has full exhaust map head work, i shift at 8500, thats where i get peak acceleration, any higher than that i get slower times. When i had no head work i shifted at 7,800sh and same thing. Even though my tuning shows a constant curve and gain, it levels of at that range. I also have an 08.


You are dumb

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carlsbadbusa


Parking Attendant
Posts: 20
posted June 30, 2009 11:26 PM        
You are dumb
quote:


Whooaah....
Always one...dude had a question, i answered what works for me.....then looky here..along comes peanut gallery with nothing good to provide to the thread, but since you are the smartest guy here ...the floor is yours genius.....next time ill bring a book with pop up pictures for you..

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BobC


Pro
Posts: 1736
posted July 01, 2009 12:21 AM        
It's all about getting the maximum amount of power through the rear wheel. If the gearbox ratio's are designed correctly you should shift at just over peak power so that the rpm drops back to just before peak power. Assuming you can transmit that to the road it has to be the optimum way to do it.

With the ZX-14, which doesn't really drop off that much before the engine rev-limiter I shift just before the limiter, 11,000 rpm +
____________
Candy Thunder Blue 2006 ZZR1400
Stock wheelbase
Max: 205.4 mph in 1.25 miles

2012 ZZR1400 in Golden Blazed Green
Brock CT Full System. etc
Max: 203.1 in 1 mile (so far)

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Stu64


Zone Head
Posts: 544
posted July 01, 2009 04:04 AM        
quote:
my 14 has full exhaust map head work, i shift at 8500, thats where i get peak acceleration, any higher than that i get slower times. When i had no head work i shifted at 7,800sh and same thing. Even though my tuning shows a constant curve and gain, it levels of at that range. I also have an 08.


Just curious, what times are you running set up like this??

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Bluebyyou


Expert Class
Gettin My Curve On
Posts: 276
posted July 01, 2009 04:54 AM        
I'm no drag racer but I do ride very hard and fast and have a good seat of the pants feel for performance.Mine pulls hard up to 11K where I shift, I can't imagine short shifting @ 8.5K and not slowing it up some. I've never felt mine nose over before 11K.
____________
2007 Bad to the Bone ZX-14 flies out, full Muzzy exhaust system, PC III, BMC race

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kawasakijockey


Pro
Posts: 1876
posted July 01, 2009 07:40 AM        
quote:
my 14 has full exhaust map head work, i shift at 8500, thats where i get peak acceleration, any higher than that i get slower times. When i had no head work i shifted at 7,800sh and same thing. Even though my tuning shows a constant curve and gain, it levels of at that range. I also have an 08.
What is your elevation??
____________
Get on the shortbus boys 'cause its time to get schooled.
2007 ZX-14
1.38 60ft
9.03 @ 149mph
8.95 @153 small shot n2o
8.68 @160mph 5lbs boost

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ninjaboy311


Zone Head
Posts: 940
posted July 01, 2009 07:48 AM        
10,600 with shift light......11,000 without. Stock tac is off a few hundred RPM's.
____________


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8.74 @ 152 on stock motor and MR9 (Muzzy Powered), 205 lbs suited

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Quarter Pounder


Pro
with Cheese
Posts: 1067
posted July 01, 2009 02:54 PM        
quote:
my 14 has full exhaust map head work, i shift at 8500, thats where i get peak acceleration, any higher than that i get slower times. When i had no head work i shifted at 7,800sh and same thing. Even though my tuning shows a constant curve and gain, it levels of at that range. I also have an 08.




If you are peaking at 8500...there is something going on. That is seriously shortshifting this motor. Can't see how that translates into faster times.
____________
SWB 2008 ZX-14
9.19 @ 151
5.98 @ 123
1.53 60'

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Quarter Pounder


Pro
with Cheese
Posts: 1067
posted July 01, 2009 02:55 PM        
quote:
What rpm do you guys shift at, I have a 08 with brock sidewinder and map and -1 front sprocket?

Thanks, Brian




Brocks Alien head and street map / stock gearing I am shifting at 11000 (or trying).
____________
SWB 2008 ZX-14
9.19 @ 151
5.98 @ 123
1.53 60'

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eklipse636


Needs a life
ZX-14
Posts: 6046
posted July 01, 2009 05:54 PM        
quote:
You are dumb
quote:


Whooaah....
Always one...dude had a question, i answered what works for me.....then looky here..along comes peanut gallery with nothing good to provide to the thread, but since you are the smartest guy here ...the floor is yours genius.....next time ill bring a book with pop up pictures for you..


Sounds like YOU are the ass here... If you short shift that much you are going to drop too low on your rpms on your next gear, GENIOUS.
____________
Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32

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Wheelie


Needs a life
Old Man
Posts: 6902
posted July 01, 2009 06:00 PM        
quote:
quote:
my 14 has full exhaust map head work, i shift at 8500, thats where i get peak acceleration, any higher than that i get slower times. When i had no head work i shifted at 7,800sh and same thing. Even though my tuning shows a constant curve and gain, it levels of at that range. I also have an 08.


Just curious, what times are you running set up like this??
thats the answer im waiting for.

wee

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smokinZX14


Needs a life
Posts: 10197
posted July 01, 2009 06:02 PM        
11200 as shown on the factory tach ....I guess i'm doing it wrong ...
____________
Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95

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carlsbadbusa


Parking Attendant
Posts: 20
posted July 02, 2009 09:17 AM        
5.9 fastest so far on the 1/8 with slip to show, been on the track less than a year, so im not the fastest guy and could care less, i just enjoy it. as far as the #, Screwed up, which everyones gonna hate still cause i still dont shift at redline, took it for a spin last im actually shifting aroun 9,8-10k no higher than that, my shift light was set to 8.5, only time i actually get near redline is when in the mountain, and thats because engine breaking......sorry didnt mean to be be a dick, i just responded back,
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