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Author Topic: Like Carburetor 101 for the total Idiot?  (Read 60985 times)

Nate

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Like Carburetor 101 for the total Idiot?
« Reply #20 on: May 13, 2007, 11:14:21 PM »

I'm picking up a 05 GT250 here in 2 weeks and have read around here that the increase in jet size is beneficial. Is the needle shimming necessary? Will i get a benefit with just changing the jets? no exhaust mods or intake mods.

Thanks
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Nate

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Like Carburetor 101 for the total Idiot?
« Reply #21 on: May 20, 2007, 10:59:30 PM »

Bump

In factory form it is said that Hyo's run lean to meet emissions requirements.

Would it be adviseable to up the jet size?

What size mike?

Do you sell them?
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Mike on the Rock

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Like Carburetor 101 for the total Idiot?
« Reply #22 on: May 21, 2007, 03:34:57 AM »

Quote from: "BeAR"
Oh and one other question........if there is a carby for each cylinder, why are the factory jets different sizes?  wouldnt it make sense to have the same fueling for each?  I thought the 2 cylinders would need to be ballanced so to speak.  Just thinking out loud.


Has to do with cooling and flow to the cylinders.
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deadmeat

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Like Carburetor 101 for the total Idiot?
« Reply #23 on: May 21, 2007, 04:21:31 AM »

:?
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Mike on the Rock

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Like Carburetor 101 for the total Idiot?
« Reply #24 on: May 21, 2007, 05:15:15 AM »

Quote from: "Nate"
Bump

In factory form it is said that Hyo's run lean to meet emissions requirements.

Would it be adviseable to up the jet size?

What size mike?

Do you sell them?


[ thanks DM Too many windows open, I get lost.... :?  ]

Most re jet one or two sizes larger, 100/100 seems to be a good choice for the GT250.
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iwantmore

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Like Carburetor 101 for the total Idiot?
« Reply #25 on: April 03, 2008, 11:56:31 AM »

okay read this thread and there is some good info here.

i have a gt125r and have checked and luckily the carbs are the same (with smaller jets)

looking at getting it rejetted (had new filter), but me and dealer having trouble finding out what spec the jets are.

i already know that i need some 92.5 jets but havent a clue about thread size or wheather they are button type, large/small head, or hex.

i am sure they will be the same but in smaller sizes compared to those of you on 250's.

anyone got this info?

Mike on the Rock

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Like Carburetor 101 for the total Idiot?
« Reply #26 on: April 03, 2008, 03:55:42 PM »

Quote from: "iwantmore"
i already know that i need some 92.5 jets but havent a clue about thread size or wheather they are button type, large/small head, or hex.
i am sure they will be the same but in smaller sizes compared to those of you on 250's. anyone got this info?


Check "CYCLE ZONE" they usually have MIKUNI jets in stock , the small or the large will work, both have the same thread.
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iwantmore

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Like Carburetor 101 for the total Idiot?
« Reply #27 on: April 04, 2008, 08:57:50 AM »

cheers for the info, i can get them from the garage, they just wouldnt find out which ones i needed, so this will be very helpful.

Mike on the Rock

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Like Carburetor 101 for the total Idiot?
« Reply #28 on: April 18, 2008, 12:25:53 AM »

Quote from: "iwantmore"
cheers for the info, i can get them from the garage, they just wouldnt find out which ones i needed, so this will be very helpful.
 

Ok on http://www.korider.info/index.php?title=Re_Jetting_the_GT250_Engine the Wiki page we are trying to build I have posted some info on re jetting the bikes, need some more info, so please look at the page, usually you will pick a jet that is one or two steps larger for street use  :wink:

Anyone know the stock size of the jets in the GV125? abd the other 125cc Hyosungs, please add the info to the page :roll:
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DV-ation

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Re: Like Carburetor 101 for the total Idiot?
« Reply #29 on: February 26, 2009, 01:45:11 PM »

hey mike, can you tell me what size i should rejet to if i've got a custom straight through end can and also if Im planning on desnorkling or maybe BMC.
Thanks!
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