03-15-2018, 06:28 PM | #1 |
Join Date: Oct 2013
Location: Leesville SC
Posts: 835
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New Carb and Jets coming for the Apollo RFZ
Hey Guys,
Since I had some time running the Apollo I finally got into it hard. It bogs really bad on hard throttle. So I ordered a Mikuni VM22, Intake, and Jets to replace the Jingling (or however you say it). I live in SC at an elevation of 643'. I'm just wondering what main jet to install as a baseline? Thanks in advance.
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My Stable- 2022 Lifan KPX250 , 2023 Royal Enfield Himalayan, 1992 Honda GL1500 Goldwing, SSR 70 Auto, Kymco Mongoose 90, Honda Four Trax 300 |
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03-18-2018, 09:53 AM | #2 |
Join Date: Oct 2013
Location: Leesville SC
Posts: 835
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seems these Mikuni carbs come with a 98 main jet. I'll just start there and move up I guess.
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My Stable- 2022 Lifan KPX250 , 2023 Royal Enfield Himalayan, 1992 Honda GL1500 Goldwing, SSR 70 Auto, Kymco Mongoose 90, Honda Four Trax 300 |
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03-19-2018, 11:29 AM | #3 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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The Mikunis I've installed have come with a 100 main and a 20 slow jet. At your elevation, you could probably start with a 110/115 main and a 27.5/30 slow jet. The sweet spot will be in there somewhere, depending on intake and exhaust mods.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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03-19-2018, 10:30 PM | #4 |
Join Date: Oct 2013
Location: Leesville SC
Posts: 835
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I got my Carb kit in today. I can't wait to compare the carb and intake I got to the stock one on the bike. I cracked open the float bowl. It had a 98 Main jet and it has a 38 pilot jet. I left the pilot and installed a 110 main. I'll see how this does. I'm gonna leave the needle in the middle.
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My Stable- 2022 Lifan KPX250 , 2023 Royal Enfield Himalayan, 1992 Honda GL1500 Goldwing, SSR 70 Auto, Kymco Mongoose 90, Honda Four Trax 300 |
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04-14-2018, 09:17 AM | #5 |
Join Date: Oct 2013
Location: Leesville SC
Posts: 835
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I installed the new carb last week with the setting listed in my previous post. I could not use the intake that came in the kit. I had to use the factory intake pipe. The new intake is turned a bit to far out and the carb interferes with the frame. But, the bike is MUCHO HAPPY now. The little 125 pulls hard all the way through to WOT. I will have to check the spark plug to see just how happy she is. This is a great carb kit for the money. I recommend it 100%. https://www.amazon.com/TC-Motor-Miku...and+intake+kit
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My Stable- 2022 Lifan KPX250 , 2023 Royal Enfield Himalayan, 1992 Honda GL1500 Goldwing, SSR 70 Auto, Kymco Mongoose 90, Honda Four Trax 300 |
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04-18-2018, 06:18 PM | #6 | ||
Join Date: Aug 2017
Location: Bay Area, CA
Posts: 375
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Quote:
I installed a 20 pilot with a 112.5 main. I am at sea level. I have not installed the carb yet though. Quote:
I also just bought an Apollo DB-18 125cc. I purchased the 26mm Mikuni for the Apollo DB-x18 125cc just like letsride. Should I have the jets almost the same on both engines? I have a 25, & a 27.5 pilot jet handy, along with a 115, and a 117.5 main jet. Letsride, did you mess with the air screw? Mine is set from the factory at about 3/4 open from closed. Also, thanks for the help on Youtube. Douglass |
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04-19-2018, 10:33 AM | #7 |
Join Date: Aug 2017
Location: Bay Area, CA
Posts: 375
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I double checked the jets that came out of my Mikuni vm22 from the factory. From what i can read on the pilot jet, it looks like a 15. When I compared it to the 25 and 27.5 it looks samller. The main jet was a 95. I'm going to start with the 25 pilot, and a 112.5 main, with the needle clip in the middle. I'll post my results hopefully this weekend.
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06-09-2018, 04:29 PM | #8 |
Join Date: Oct 2013
Location: Leesville SC
Posts: 835
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Wow, I totally dropped the ball on this thread. I was away from the site for a bit. I could of swore the pilot said 38 but I could be wrong, which I probably am. I will have to check it again if I have the carb off again. But for now the thing is just running to good to mess with it. I left the pilot jet that came in the Carb and put in the 110 main jet. I turned the idle air screw out 1.5 turns from lightly seated. And my needle clip is right in the middle. My spark plug is a nice brown color. The bike runs fantastic. Actually I'm downright impressed how good that little 125 hauls my big butt around LOL. It will run 52mph flat out according to a GPS App. But it never sees speeds like that bumping around on the trails with my little guy.
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My Stable- 2022 Lifan KPX250 , 2023 Royal Enfield Himalayan, 1992 Honda GL1500 Goldwing, SSR 70 Auto, Kymco Mongoose 90, Honda Four Trax 300 |
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06-12-2018, 10:00 AM | #9 | |
Join Date: May 2018
Location: Spring Texas
Posts: 117
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Quote:
My Ruckus is at 38/80 right now and the other seem small on the slow jet. VM22 is that the 26mm? is the VM22 better than the 26mm one I have now? Sorry I dont know what the quality diffrence is between carbs. I thought I had to go bigger. |
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