KDX220

Questions and Answers about the best carb and Head mods available for the KDX.
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N8Strine
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KDX220

Post by N8Strine »

I am thinking of sending Carb out to RB Carb Designs. I have a 220 with a FRP ported cylinder and a boyesen rad valve, fmf woods pipe. Will I gain more bottom end as well as top end? Will I need to run race gas? I currently run 93.
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C George
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Re: KDX220

Post by C George »

You don't need race gas unless the cranking compression has been increased beyond spec by a head mod.
I know you said Carb but with the RB std. head mod , pump gas works fine.
I'm a strong advocate for non-ethanol in a 2 stroke , buy it if you can get it. :grin:

Stay away from octane boosters
05 KDX-220R / 06 KDX-225R / Maxima 927 / Millenium Tech / Ron Black / PC , FMF / Many 220 engine mods / 40 + yrs. of riding dirt bikes 🤟🤟
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C George
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Re: KDX220

Post by C George »

I just got my 220 head back today from RB . What a beautifull job !
Just no comparison to the local job I had done to the 200.

Turn around time was great as I mailed it out the 10th and got it back on the 18th. :grin:
05 KDX-220R / 06 KDX-225R / Maxima 927 / Millenium Tech / Ron Black / PC , FMF / Many 220 engine mods / 40 + yrs. of riding dirt bikes 🤟🤟
MCKDX220
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KDX220

Post by MCKDX220 »

Hey C George,

Did you have the carb mod done as well, or just the head mod done ???

Regards,

Michael
87 KDX200 / 02 KTM 520 EX/C / 87 XR 200 / 90 XR 200
N8Strine
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Re: KDX220

Post by N8Strine »

neither
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C George
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KDX220

Post by C George »

MCKDX220 wrote:Hey C George,

Did you have the carb mod done as well, or just the head mod done ???

Regards,

Michael

Just the head mod was in the budget for now. I have a 35mm on my 220.
05 KDX-220R / 06 KDX-225R / Maxima 927 / Millenium Tech / Ron Black / PC , FMF / Many 220 engine mods / 40 + yrs. of riding dirt bikes 🤟🤟
MCKDX220
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Re: KDX220

Post by MCKDX220 »

Ya, seems like 95% of most folks get both, just curious how you like it, looks like it's going to be awhile before you test given the severe weather you Guys are having.

Michael
87 KDX200 / 02 KTM 520 EX/C / 87 XR 200 / 90 XR 200
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