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tuning rs mikunis
- zedsled
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15 Oct 2007 15:38 #176288
by zedsled
tuning rs mikunis was created by zedsled
I just bought myself some new rs carbs, and the instruction book is all but useless. Can someone please tell me if screwing the pilot screws in makes it richer or leaner? And does changing the main jet affect low or mid range in any way, or just 3/4 to wide open throttle? Its a 1075 mtc 10.5/1 kit with mild cams dyna ign and coils,4 into1, stock head running rs34s with pod filters. Any tips on jetting/tuning would be appreciated.
Thanks, jason
Thanks, jason
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- violentvintagecycles
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18 Oct 2007 10:55 #176913
by violentvintagecycles
Replied by violentvintagecycles on topic tuning rs mikunis
In is richer, out is leaner..
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18 Oct 2007 10:56 #176914
by violentvintagecycles
Replied by violentvintagecycles on topic tuning rs mikunis
In is richer, out is leaner..
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- Z1109R Fin
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19 Oct 2007 01:21 #177029
by Z1109R Fin
Z1000R ´83...Slightly modified...
Replied by Z1109R Fin on topic tuning rs mikunis
I think RS´s have fuel not air pilot screws i.e opening makes it richer. If the pilot screw is in front of the carb body (engine side) then its a fuel/air screw.
Pilot jet affects on idle to appr. 1/4 throttle open
Needle and needle jet from 1/3-2/3 throttle open
Main jet from 1/2-WOT
Pilot jet affects on idle to appr. 1/4 throttle open
Needle and needle jet from 1/3-2/3 throttle open
Main jet from 1/2-WOT
Z1000R ´83...Slightly modified...
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- BlackStar
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12 Nov 2007 06:15 #180645
by BlackStar
1978 Suzuki GS1000: Indexed,trued, welded crank, 1085 kit, Mikuni RS34 carbs, K&N pods, V&H 4-1 with comp. baffle.
2005 Yamaha Roadstar Warrior 1700: Patrick Racing Big Air Kit, Speedstar 2-1 exhaust.
Replied by BlackStar on topic tuning rs mikunis
I have a new set of RS34's on my GS1000. I went with the 34's since the bike is stock displ. Running pods with a V&H 4-1 header. I thought I'd rather be a little to small on the throat than too large since I was looking for rideability and throttle response. I don't spend much time at WOT. I'm running the needle clip on 4th down, and 130 mains. Pilot circuit is stock. Runs sweet with great throttle response. In fact bike has never run this good.
RS34's use a fuel screw only. In is leaner, out is richer. If the screw is on the engine side of the slide, it is a fuel screw.
If the screw is on the airbox side of the slide, it is an airscrew, which, in is less air (richer) and out is more air (leaner).
I think you'll love these carbs. The ease of tuning was worth it alone. You can change all 4 needle settings on the bike without effecting sync.
RS34's use a fuel screw only. In is leaner, out is richer. If the screw is on the engine side of the slide, it is a fuel screw.
If the screw is on the airbox side of the slide, it is an airscrew, which, in is less air (richer) and out is more air (leaner).
I think you'll love these carbs. The ease of tuning was worth it alone. You can change all 4 needle settings on the bike without effecting sync.
1978 Suzuki GS1000: Indexed,trued, welded crank, 1085 kit, Mikuni RS34 carbs, K&N pods, V&H 4-1 with comp. baffle.
2005 Yamaha Roadstar Warrior 1700: Patrick Racing Big Air Kit, Speedstar 2-1 exhaust.
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