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BIKELAND > FORUMS > ZX-14.com > Thread: zx14 head work NEW TOPIC NEW POLL POST REPLY
chadszx14


Novice Class
Posts: 31
posted January 08, 2009 08:20 AM        
zx14 head work

im thinking about getting some head work done to my 14 becaue im not all into spraying gas to my bike right now.....i have a 06 zx14 with ivans timing retard sensor muzzys m14 exhaust power commander mps air shifter 16/44 gear ratio and i only have 171 horse power to the rear wheel....i figured i would have a little bit more but anyways what i was wanting to know is, how much power am i looking to gain if i have the heads shaved port and polished because its going to cost me around $2000 and if its not going to be a decent HP gain then i dont want to waist my money on it.......thanks to anyone out there that can help me out with this...
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06 14, stertched 9" over stock,dyno jet pc3, star racing custom map,16-44 sprockets, 7" fold out touch screen, GPS, full muzzy exhaust

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dubious


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Needs more time to ride!
Posts: 8442
posted January 08, 2009 08:33 AM        Edited By: dubious on 8 Jan 2009 16:35
dyno HP is all relative to the dyno, baro pressure, bike setup, etc as I am sure you have heard.

Saying its all relative, so the numbers I am going to throw at you are as well.

If I remember correctly, I think my numbers might be low....

a non oring chain, 0 wt synthetic oil, pipe, PC3 + map, no air filter, mr9, porting and cut head should get you around 195 HP, with cams Brock was reporting 205RWHP in this combo.

Check out Brocks site!


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natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.

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Bawls


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re-learning to ride
Posts: 2701
posted January 08, 2009 08:44 AM        
what kind of times are you running at the track? Dyno's are really just a good Gage to see what you gained before and after mods. If you put your bike on 5 different dynos you'll get 5 different HP readings because no 2 are the same. First order of business is to get rid of that TRE and pull those flies out lol.

I don't know what kind of hp gains a good port job will give you, but I would try to squeeze everything I've got out of the setup that you're already running at the track before adding power. If you're only looking for dyno numbers out of your bike then you're going to have a hell of a struggle. The 14 is well known for putting down the numbers where they count which is on the drag strip and not on the dyno. IF you want a dyno queen... buy a busa.
____________
Best 60ft: 1.42
Best 1/8th: 5.97
Best 1/8th MPH: 119

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chadszx14


Novice Class
Posts: 31
posted January 08, 2009 08:48 AM        
sweet.. thats what i was hoping.....if i could get around 200 HP on motor i will be really pleased because cant no one around here handel me on the driving part. i straight kill them out the whole.....im racing busa's with the gas and they r beating me by like 2 bike lenghts in the quarter.......
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06 14, stertched 9" over stock,dyno jet pc3, star racing custom map,16-44 sprockets, 7" fold out touch screen, GPS, full muzzy exhaust

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chadszx14


Novice Class
Posts: 31
posted January 08, 2009 08:54 AM        
im running 6.20s in the 8th now.....i havent took it back to the quarter since i first got it and it was fully stock running 9.90s.....i would guess it would do low 9s in the quareter the wqay it sits now....the tre is the same thing as haveing te flies out because the flies are all the way open in 6th gear and the tre tricks the computer and makes it think its in 6th gear all the time so the flies are always all the way open.....
____________
06 14, stertched 9" over stock,dyno jet pc3, star racing custom map,16-44 sprockets, 7" fold out touch screen, GPS, full muzzy exhaust

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Bawls


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re-learning to ride
Posts: 2701
posted January 08, 2009 09:39 AM        
with the tre, the secondarys start opening around 3000 rpm and you lose your gear indicator. with no flies they're not there, and you get to keep your gear indicator.

Read this when you get a chance.

http://brocksperformance.com/lowend.htm
____________
Best 60ft: 1.42
Best 1/8th: 5.97
Best 1/8th MPH: 119

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Shane661


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Posts: 11494
posted January 08, 2009 09:41 AM        
Are you stock wheelbase?
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chadszx14


Novice Class
Posts: 31
posted January 08, 2009 09:58 AM        
no its stretched 8 to 9 inches over stock with roaring toys extention blocks
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06 14, stertched 9" over stock,dyno jet pc3, star racing custom map,16-44 sprockets, 7" fold out touch screen, GPS, full muzzy exhaust

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Shane661


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posted January 08, 2009 10:00 AM        
Are you a larger guy? It seems like you shold be running a little quicker at that wheelbase and mods.

Shane

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Sticks_n_Stones


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Posts: 3930
posted January 08, 2009 10:34 AM        
chads: TRASH that TRE crap, AND REMOVE THOSE FLIES!!!! The stupid Ivans crap might start opening at 3K, but they dont fully open until after 6K. Trust me, I've done it both ways, and with the flies out its a wholly different beast than with the TRE.

It took me about 40 minutes to do mine, going slow. Search this site for the pics and walk thru of how to do it. piece of cake for any skill level.
____________
'06 zx14
Muzzy M10/M14
PCIII w/ Muzzy map
Flies out K&N in!
bits n pieces...

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Juice McGoose


Novice Class
Posts: 73
posted January 08, 2009 10:56 AM        
Dubious and Bawls are right about the difference between dynos. There is a lot of info on this at Honda-Tech.com. Next time you run the 1/4 post your MPH, test weight (gasoline averages 6.1 lbs. a gal) outside temp. and elevation and we can come up with a closer estimation of your HP.

If Busas are beating you by 2 lengths that is something to be concerned about, but it is possible you have some tricked out Busas in your area. I would do a compression check on all four cylinders on a warm bike.

I started drag racing and working as an auto mechanic in '68. Something I heard then and hasn't changed is out of every 5 engines, three with be average, one will be slower than average and one will be faster than average. Could be you got a slow one.

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chadszx14


Novice Class
Posts: 31
posted January 08, 2009 11:01 AM        
sticks N stones does your bike ever try to run hot? i was reading from the site that bawls sent me and it says you dont want to take the flies out if u do alot of street riding and i do alot of street riding and racing and shane yes im a big guy.. im 6'3" and about 210 pounds i know that probably has alot to do with it thats why i want to do some head work.....i dont like nitrous.. i think its cheating.. i mean ill use it if i absoultly have to use it but iv never put it on any of my racing vehicles
____________
06 14, stertched 9" over stock,dyno jet pc3, star racing custom map,16-44 sprockets, 7" fold out touch screen, GPS, full muzzy exhaust

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chadszx14


Novice Class
Posts: 31
posted January 08, 2009 11:05 AM        
juice mcgoose i think u read it wrong man..... the busas are spraying gas and im running on motor..... i think thats pretty good if they can only beat me by 2 lenghts and there spraying the hell out of it.....if its a motor to motor race they dont stand a chance...ikill them everytime
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06 14, stertched 9" over stock,dyno jet pc3, star racing custom map,16-44 sprockets, 7" fold out touch screen, GPS, full muzzy exhaust

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Sticks_n_Stones


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Posts: 3930
posted January 08, 2009 11:17 AM        
read further on that post chads, the author (Brock) never tried running the bike on the street with flies out! He amended his statement later, admitting that flies out on the street was just fine.

Personally, being a heavier rider I found flies out to be perfect! The flies in turbo-lag kinda feeling always pissed me off. I hate it when a computer detunes an engine for you! Thats what an experienced riders right wrist is for. Trust me, just like EVERY SINGLE guy on this site that has gone flies out, you will NEVER want to go back!
____________
'06 zx14
Muzzy M10/M14
PCIII w/ Muzzy map
Flies out K&N in!
bits n pieces...

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chadszx14


Novice Class
Posts: 31
posted January 08, 2009 11:33 AM        
has any 1 had head work done to there 14? that is what my form is about....i just want to know how much power am i going to get with this head work......the motor will have to come out if i do the head work and if i do decide to do that i probably will go ahead and remove the flies....thanks for all the people trying to help but i just want to know about the head work.....thanks again every 1
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06 14, stertched 9" over stock,dyno jet pc3, star racing custom map,16-44 sprockets, 7" fold out touch screen, GPS, full muzzy exhaust

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06redzx14


Pro
Posts: 1022
posted January 08, 2009 11:48 AM        
pm bill eason he'll get you going in the right direction. most of the improvements i've saw with head work come from milling and therefore raising the compression
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06 alien head, no flies, PC+hub, 16/45 44 43, air shifter, dry shot

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Juice McGoose


Novice Class
Posts: 73
posted January 08, 2009 11:54 AM        
ooohh. Sorry.

You are already putting out over 200 HP at the crank with a 1352cc engine on pump gas without variable valve lift or timing. Port size, valve size, cam timing, port length, compression and many other factors all work in harmony to make an enging run strong over a large rpm range smoothy and consistanly without problems and without breaking. The chances of some guy in his shop doing a better job than Kawasaki has on the 14 is pretty unlikely. That's why guys spray.


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Shane661


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Posts: 11494
posted January 08, 2009 11:56 AM        Edited By: Shane661 on 8 Jan 2009 19:59
I am your weight, with the same exhaust, and 6" over. My bike is running 9.30's, and I have a lot more left in the bike. That is with 6.0 1/8th times, on low 1.5 60 fts.

You will get much more out of practicing than you will from the head work. Guaranteed.

Not knocking your riding, just trying to save you some money!

Shane

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NINJA12


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Posts: 3310
posted January 08, 2009 12:19 PM        
Brock don't think the TRE is the same as flys out.
In one of his articles he states the TRE will cause slower track times.

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chadszx14


Novice Class
Posts: 31
posted January 08, 2009 12:23 PM        
i dont know juice....theres a guy about 45 min. away that has a bike shop and i have seen some bad ass bikes he has built exspecially the one he has but it is a busa and its all motor....iv seen him run 5.7 in the 8th mile
____________
06 14, stertched 9" over stock,dyno jet pc3, star racing custom map,16-44 sprockets, 7" fold out touch screen, GPS, full muzzy exhaust

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06redzx14


Pro
Posts: 1022
posted January 08, 2009 12:35 PM        
chads where are you from? trying to get a picture of the altitude
____________
06 alien head, no flies, PC+hub, 16/45 44 43, air shifter, dry shot

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Bawls


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re-learning to ride
Posts: 2701
posted January 08, 2009 12:47 PM        
Here are two zx14's here that run 5.7 1/8th miles with absolutely NO internal engine work and no spray.

Oh yeah... Desity altitude is anywhere from 4000 to 5200.

I give you.... BRONZE STAR RACING.




____________
Best 60ft: 1.42
Best 1/8th: 5.97
Best 1/8th MPH: 119

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Juice McGoose


Novice Class
Posts: 73
posted January 08, 2009 12:53 PM        
Ah, well, if you opened up the ports some, increased the compression, gave it more lift and overlap it would probably go faster in the 1/4. You would also move the torque peak to a higher RPM and probably result in a smaller power band. It would idle at a higher RPM. It would make more noise out the exhaust. It would get less MPG. You may have to add octane booster to keep it from pinging. It will make more heat. This is just off the top of my head. Being the 14's cooling system is already borderline the heat factor could be a problem unless you live in a cold climate.

How much more peak HP are you going to get for the amount of money spent? I don't know that answer but I do know you are not going to get any guarantees from the shop. You pay your money and take your chances. Nitrous on the other hand has proven itself to be the best HP per $ you can spend on an engine.

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SteddyTeddy


Pro
Posts: 1664
posted January 08, 2009 01:27 PM        
At 6.2's in the 1/8th and extended, you have a long way to go before you need engine work. More seat time, seat time, seat time.
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chadszx14


Novice Class
Posts: 31
posted January 08, 2009 02:11 PM        
im from south Georgia.....i dont see how i can come out the gate any harder...im leaving on 7 to 8 thousand RPM with the front tire about 2 foot in the air.....i will take it back to the 1/4 mile track tomarrow and i will post my best times saterday morning or friday night
____________
06 14, stertched 9" over stock,dyno jet pc3, star racing custom map,16-44 sprockets, 7" fold out touch screen, GPS, full muzzy exhaust

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