ReJetting?
01-13-2005 | 06:16 PM
#1
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ReJetting?
Hello all,
I just bought some high mount Two Brothers Racing carbon slip ons (C2). I hear that I have to re jet before installing. #1 Is this true? #2 What jet kit should I run? I will be installing the jet kit myself. I have heard that the Factory kit is good. I have also heard to go with the Dyno jet kit. Any comment or advice will be gratly appreciated. I am running the stock air box with a K & N air filter. Everything else is stock.
Thanks for your time, Todd near Seattle.....
I just bought some high mount Two Brothers Racing carbon slip ons (C2). I hear that I have to re jet before installing. #1 Is this true? #2 What jet kit should I run? I will be installing the jet kit myself. I have heard that the Factory kit is good. I have also heard to go with the Dyno jet kit. Any comment or advice will be gratly appreciated. I am running the stock air box with a K & N air filter. Everything else is stock.
Thanks for your time, Todd near Seattle.....
01-15-2005 | 05:32 AM
#3
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Joined: Oct 2004
Posts: 205
Re: ReJetting?
I like the Factory brand best for near stock motors like these . I heard they offer great support if you need it which might be a plus and you don't have to drill your carbs like with the Dyno Jet kits but either kit gets the job done .
You can also richen up the idle circuit with the meter screws and shim the stock needles . It will be fat in the midrange and is more of a band aid than a fix but it works to cure lean mixture and drivability problems .
You can also richen up the idle circuit with the meter screws and shim the stock needles . It will be fat in the midrange and is more of a band aid than a fix but it works to cure lean mixture and drivability problems .
01-15-2005 | 07:35 AM
#4
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Re: ReJetting?
Rollingalong,
Thank you for your information and experience. I have been looking into this for some time and have heard good things a bout the factory jet kits. Thanks for your time and advice, I am leaning towards the Factory kit.
Thanks Todd
Thank you for your information and experience. I have been looking into this for some time and have heard good things a bout the factory jet kits. Thanks for your time and advice, I am leaning towards the Factory kit.
Thanks Todd
01-16-2005 | 08:40 PM
#6
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Joined: Nov 2004
Posts: 103
From: Atlanta
Re: ReJetting?
I just went through a long, drawn-out affair with jet kits, driven by a collision of DynaJet and Factory Pro differences of opinion on how to design a jet kit for the VTR. The Factory Pro kit uses standard-size jets (compliant with the jet-size designations of the OEM carbs). Since my mechanic prefers to dyno-tune bikes, he _hates_ DynaJet kits, says they're sometimes a real in in the *** when you are fine-tuning a bike. (The proprietary jet sizes of the DynaJet kit apparently make it a bit trickier to use dyno runs to tweak jet sizes.)
Since my main jets had previously been replaced with DynaJet main jets, we ended-up having to order new jets (not included in the Factory Pro kit) to accomodate the difference in exhaust volume that the new D&D Show-and-Go exhaust added. In doing so, we made a call to Factory Pro Support, and those guys _rock_! It so happens that the rep. to whom we spoke has a VTR1000F with D&D's, so he offered a few helpful pointers that saved us a bit of frustration: First, he pointed-out that the main jet size we ended-up using with the D&D's is actually the equivalent of the OEM main jets, and that the tweaking necessary to accomodate D&D's on a VTR is actually accomplished by varying the size of the pilot jets. He also pointed-out that, to maximize performance, the air-fuel mixture adjustment might have to be tweaked again when the weather warms (we performed the dyno-tune in ambient temperatures of 45-50 degrees F). In short, because of the helpful advice of Factory Pro Support, SuperChicken III now runs quite well at average ambient temperatures for this time of year in Atlanta (45-50 degrees F). It even runs fairly well at 45-55 mph, saving us--for the time being--the trouble of installing an ignition advance kit.
cheers,
--HotStreetVTR
Since my main jets had previously been replaced with DynaJet main jets, we ended-up having to order new jets (not included in the Factory Pro kit) to accomodate the difference in exhaust volume that the new D&D Show-and-Go exhaust added. In doing so, we made a call to Factory Pro Support, and those guys _rock_! It so happens that the rep. to whom we spoke has a VTR1000F with D&D's, so he offered a few helpful pointers that saved us a bit of frustration: First, he pointed-out that the main jet size we ended-up using with the D&D's is actually the equivalent of the OEM main jets, and that the tweaking necessary to accomodate D&D's on a VTR is actually accomplished by varying the size of the pilot jets. He also pointed-out that, to maximize performance, the air-fuel mixture adjustment might have to be tweaked again when the weather warms (we performed the dyno-tune in ambient temperatures of 45-50 degrees F). In short, because of the helpful advice of Factory Pro Support, SuperChicken III now runs quite well at average ambient temperatures for this time of year in Atlanta (45-50 degrees F). It even runs fairly well at 45-55 mph, saving us--for the time being--the trouble of installing an ignition advance kit.
cheers,
--HotStreetVTR
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