08-27-2014, 07:55 AM | #1 |
Join Date: Jul 2014
Location: Isle of Man
Posts: 31
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V Raptor 250 Modding
Hi,
I'd like to thanks Weldangrind for the help he gave me. Here's some photos of my V Raptor 250 - I'll list the mods at the end. At the start with the Air Filter gone and pod added CDI added - 5 degree advance + Exhaust Respray Mod list - EGR gone : Free Pod Filter - Air Box gone : £7 ooRacing CDI - £50 Respray - Khaki Green Plasti Dip 3 cans: £35 Exhaust : £40 To Do - Rejetting Luckily the Manx weather held up for me to spray outside!!! A rare thing... Unfortunately I can't ride it at the moment with out the jetting - waiting on the postman. |
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08-27-2014, 10:55 AM | #2 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Sweet bike!
I failed to realize before that you have an OHC engine; that's worth another hp and a few more revs over the pushrod version. I'll be interested to hear your thoughts on the CDI, once you have the jetting sorted. I really like that colour. Please let us know how Plastidip stands up to petrol. I'm quite envious of V-Raptor owners. We don't get that bike where I live.
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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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08-27-2014, 01:57 PM | #3 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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You did great! I especially like your paint job.
I am impressed with the quality of construction of your V-Raptor. I also wish we could get these motorcycles in the United States.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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08-27-2014, 02:16 PM | #4 |
Join Date: Jul 2014
Location: Isle of Man
Posts: 31
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Thanks,
The jets arrived in the post today. I put the 110 jet in place. The bike is fine up to the late throttle where it sort of hiccups and the power comes off. Is that because the mix is too rich? I may phone the local garage and ask him to teach me how to tune the carb properly. I'll have to wait a few days though as the Manx GP on and loads of people are at the garage.... I don't really get the spark plug thing either... Mine is really black, which I think means rich, but I'm not sure which to change the Needle, the small jet or the main. On the plus side I do feel like I've accomplished something though. Its much easier to work on than my BMW. |
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08-27-2014, 03:30 PM | #5 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Does it hiccup as if it's running out of fuel? If so, I'd say it needs a fatter jet, like a 112.5. I'm running a 112.5 on my 200cc bike, and it's 23cc smaller than yours.
If the plug is black after idling, you're not getting an idea of how it's running at WOT. PLEASE take Manx GP pics for us! You live on holy ground, and we must live vicariously through you.
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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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08-27-2014, 05:27 PM | #6 |
Join Date: Jul 2014
Location: Isle of Man
Posts: 31
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Its not the TT it's the Grand Prix, so its a little less exciting...
Once its over I can run my bike flat out on the road to get the max speed though. We don't have speed limits. It should make tuning easier. |
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08-28-2014, 10:44 AM | #7 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Indeed! I recommend a full throttle plug chop, to see what the fuel needs are at speed.
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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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08-28-2014, 10:48 AM | #8 |
Join Date: May 2014
Location: Vancouver Island BC
Posts: 264
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Wow that's a nice bike
I'm jelous lol Dave |
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08-29-2014, 03:18 PM | #9 |
Join Date: Jul 2014
Location: Isle of Man
Posts: 31
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Hi again,
I've tried the following jets now - main 110 - small hiccups 116 - medium 120 large 104 - tiny hiccups I think its too rich.... Is that possible after changing the air filter and exhaust!!! The plug is black on full throttle.... I have convinced myself the holes on the 102 stock is actually smaller than it reads. |
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08-30-2014, 03:40 AM | #10 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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You could certainly drop the $40 USD and buy a Mikuni. Much easier to get jets for, and the jet system is logical.
When you say the plug is black on WOT, did you do an actual plug chop? Was it with a new plug? Changing the air filter and exhaust to free-breathing parts would create a lean condition.
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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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08-30-2014, 05:12 AM | #11 |
Join Date: Jul 2014
Location: Isle of Man
Posts: 31
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No I just clean it and take it out to check the color/
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08-30-2014, 06:04 AM | #12 |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
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pilot jet maybe the issue...
the pilot jet dosn't suddenly stop feeding fuel when the needle & main jets start working as most think... the TTR250 is a prime eg... they come with 2 jet combinations.. 40/138 or 38/142 both combinations surply that same amount of fuel at full throttle the 40/138 is used in colder climates to make starting / cold running better..
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08-30-2014, 02:14 PM | #13 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Since you have access to roads with no speed limit, I recommend a WOT plug chop. It will give you a better idea of what's really happening.
__________________
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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08-30-2014, 05:04 PM | #14 |
Join Date: Jul 2014
Location: Isle of Man
Posts: 31
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I don't want to buy another Spark Plug. They don't have anymore in the shop. I'll have to order more online.
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08-31-2014, 12:39 PM | #15 |
Join Date: Jul 2014
Location: Isle of Man
Posts: 31
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Plasti Dip doesn't like petrol.
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