RPS 250 magician upgrade

Dwake402 · 05-25-2017, 08:37 PM

Hey guys. This is my first post.
So I've upgraded to a 17t front sprocket, and have rejetted my stock carb to a 110.
Is there anything I can do to my exhaust and/or air box to compliment my new carb jet? I'd prefer not to buy anything new, I'd rather modify the stock exhaust in any way I can.

Thanks!

linemanxxlog · 05-26-2017, 02:38 PM

I gutted the cat and removed the spark arrestor on my Magician and it sounds pretty good. There is thread on here about gutting the cat by jerryhawk. You may need a 115 and a shim under the needle afterwards.

**JerryHawk250** · 05-26-2017, 02:47 PM

Look here http://chinariders.net/showthread.php?t=17913&page=2

Dwake402 · 05-29-2017, 11:59 PM

Quote:

Originally Posted by linemanxxlog

You may need a 115 and a shim under the needle afterwards.

Is 115 the biggest I should go? I opened my intake a little bit and I gutted my cat. As for shimming, I need to do some research, I know nothing about that.

linemanxxlog · 05-30-2017, 07:58 PM

You may need larger than a 115. I only said that because its what I have, but elevation plays a key role in that so to know for sure you'd have to do a plug chop. It was only a jumping off point. And shimming the needle means to put a small washer or two between the slide valve and the retaining clip for the needle. Basically it just moves the needle up allowing more fuel for 1/4 to 3/4 throttle. But with anything its trial and error. These are just recommendations of what has worked for others.

05-25-2017, 08:37 PM	#1
Dwake402 Join Date: May 2017 Location: Omaha Nebraska Posts: 4	RPS 250 magician upgrade Hey guys. This is my first post. So I've upgraded to a 17t front sprocket, and have rejetted my stock carb to a 110. Is there anything I can do to my exhaust and/or air box to compliment my new carb jet? I'd prefer not to buy anything new, I'd rather modify the stock exhaust in any way I can. Thanks!
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05-26-2017, 02:47 PM	#3
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,739	Look here http://chinariders.net/showthread.php?t=17913&page=2 __________________ 2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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05-26-2017, 02:38 PM	#2
linemanxxlog Join Date: Mar 2017 Location: Kansas Posts: 31	I gutted the cat and removed the spark arrestor on my Magician and it sounds pretty good. There is thread on here about gutting the cat by jerryhawk. You may need a 115 and a shim under the needle afterwards.
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05-30-2017, 07:58 PM	#5
linemanxxlog Join Date: Mar 2017 Location: Kansas Posts: 31	You may need larger than a 115. I only said that because its what I have, but elevation plays a key role in that so to know for sure you'd have to do a plug chop. It was only a jumping off point. And shimming the needle means to put a small washer or two between the slide valve and the retaining clip for the needle. Basically it just moves the needle up allowing more fuel for 1/4 to 3/4 throttle. But with anything its trial and error. These are just recommendations of what has worked for others.
	0