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Post by garystephen on May 4, 2020 13:26:28 GMT
Hi,
Can anyone give advice on this I have read somewhere you can drill out your air filter 5mm and 7mm in the heart shape part of the air filter. I want to know if this is worth doing along with if so what sort of if any jetting I need to increase. I have a vespa px 200 but its standard I was thinking about the sip exhaust and maybe doing this drilling for the air filter and maybe a bigger jet if require am a novice to all this thank you in advance.
Cheers
Gary
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Post by ianmartin40 on May 4, 2020 14:54:08 GMT
Hi Gary
Yes it is worth doing especially if you are going to change the exhaust as well, as far as I know you can buy them already drilled out from sip,and you will then need to increase the main jet.
Ian
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Post by garystephen on May 4, 2020 15:02:24 GMT
Hi Ian,
Thanks for your reply I currently have a 116 main jet in as standard would you think a 118 would be ok or bigger? Is there any exhaust you would recommend I have been looking at the sip road 2 race exhaust.
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Post by Grimmripper on May 4, 2020 20:05:38 GMT
I have a 2008 PX200. It started life with a 116 main jet.
After drilling the air filter and fitting an SIP road 2 it is running a 122 main jet.
Cheers
MattO
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Post by citydaz on May 4, 2020 20:12:50 GMT
Dont forget to wash and rinse your drilled air filter in petrol to get rid of any swarf or other crap that will disrupt your engine.
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Post by jackthekipper on May 5, 2020 6:41:25 GMT
mine's p200... sip road 2..drilled air filter, 128 main jet..runs perfect..splutters a lot with any smaller jet in
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Post by garystephen on May 5, 2020 11:02:15 GMT
Thank you guys for your replies and help am guessing its a little bit of trial and see what works best? Grimmripper I have 2006 PX200 I wonder if you can get a selection of main jets rather than buying one at a time as by the looks of things a 122 or 128 main jet seems the way to go. Also guys what sort of speed should I be looking to get when this is done?
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Post by garystephen on May 5, 2020 11:45:23 GMT
Guys sorry am I correct in saying I only need to change the main jet in the carb the bottom one that pushes in?
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Post by Grimmripper on May 6, 2020 2:22:03 GMT
So in reply to your questions. 1. You can get a jetting kit eg www.sip-scootershop.com/en/products/jetting+kit+si+sip+performance+_40260200. Start with the biggest jet and it should 4 stroke at full throttle. Work your way back down the jet sizes until you find the biggest jet that runs clean at full throttle. 2. Expect max speed to be about 5 Km/h faster than you are presently. 3. All I replaced was the main jet at the bottom of the stack that pushes in. Cheers MattO |
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Post by Grimmripper on May 6, 2020 2:38:21 GMT
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