joel787
Zone Head
Posts: 590
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posted March 29, 2011 09:48 PM
throttle bodies question...
hello, ive had my 14 for about a month now im a first timer here but been reading a lot of info in this forum, i think its pretty tight compared to some others...anyhow resently had a throttle plate misshap trying to remove flies so i desided instead of paying $300 on an ebay item rather to get mines bored my question is what could be the biggest i can go on stock injectors. appreciate ur knowledge, thanks.
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oldkawboy
Needs a job
Posts: 2125
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posted March 30, 2011 05:30 AM
What year is your bike? What engine mods?
The '06 & '07 injectors flow more than the '08's and up. Even though the newer one's have two more holes they are smaller. I'm thinking the difference is 80cc's or so.
Jim (Y2KZX12R) feels that with motor work, at least headwork, the early style would be better since they flow more.
I know that several folks have bored the stock tb's out to 48mm and a few to 49mm and are using stock injectors as long as no serious motor work has been done.
I've got a sock 14 with headwork and am running 47's with stock '07 injectors and all is fine.
Just depends on your combo how much injector you need.
Dan
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joel787
Zone Head
Posts: 590
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posted March 30, 2011 10:54 AM
thanks dan, well i got an 2006 stock motor just some bolt on upgrades, pc3, k&n, smog block offs, riffleman insert, d&d slip ons that came with the bike when i bought it. next would be pc ignition module, extensions and gearing.
im trying to keep it street so i went and got some price numbers: $800 bored 3mm over and custom map, $500 for one from ebay and installed, then they tolled me that for $250 they could replace the oem flap with the secondary fly flap wich idk if it would work.. any input would be helpful. thanks
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Shane661
Needs a life
Posts: 11494
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posted March 30, 2011 11:01 AM
I would suggest that your next mod be a full exhaust, and ditch the slip-ons.
Forget about engine mods until you remove your secondary plates, install a full exhaust, and remap. Brock's has exhausts and mapping that will work great out of the box, and save you time, money, and hassles.
Shane
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joel787
Zone Head
Posts: 590
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posted March 30, 2011 11:10 AM
that is one box on my to do list but... right now thanks to my incopetence in mechanical skills i accidentally drilled an 1/4 inch hole in my #3 throttle plate so am kinda trying to figure out what would be best on the long run... honestly i havent been on that saddle enough to be confortlable yet.
tho i read somewhere that the major advantage of full system is weight savings not much hp is that wrong?
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Shane661
Needs a life
Posts: 11494
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posted March 30, 2011 11:13 AM
A full system will give you as much as 10+ horsepower compared to slip-ons.
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joel787
Zone Head
Posts: 590
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posted March 30, 2011 11:22 AM
hmm i guess ill start looking at a badass sidewinder and a bunch of stickers so i could look like a pro...jk... in my situation what do u think it would be best for my problem, do those come as headers or full syst only, ill start a new google adventure...
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Shane661
Needs a life
Posts: 11494
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posted March 30, 2011 11:26 AM
Just get a full system, a 4 into 1. Call Brock's or Muzzys and they can give you the details and costs involved.
Shane
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted March 30, 2011 04:04 PM
Like Dan said, we offer 47 and 48mm throttle bodies. They are $530 for the 47's.
The 47's are good for your setup.
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Y2KZX12R
CompetitionCNC.com
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johnsonzx14
Expert Class
Posts: 487
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posted March 30, 2011 06:16 PM
you notice a difference with those bored out like that? do you have to remap it?
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joel787
Zone Head
Posts: 590
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posted March 30, 2011 09:59 PM
Ive been eyeballing ur site y2kzx12, ama try to fix my stock one first cuz it is true ill be wasting money on tunning with stock piping, if no luck ill hit u up bro. Thanks
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ZX14Mike
Zone Head
Posts: 891
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posted March 31, 2011 12:44 PM
quote:
Like Dan said, we offer 47 and 48mm throttle bodies. They are $530 for the 47's.
The 47's are good for your setup.
Jim, I'm curious why everyone seems to be going with the 47's...........are the 48's for BIG motors or is there a big price difference for the 48's?
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted March 31, 2011 01:00 PM
The 47's are a good fit for engines smaller than 1500cc.
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Y2KZX12R
CompetitionCNC.com
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