Hello All...

Spada3man · 10-06-2013, 06:10 PM

Hello the Forum!
I've just bought a V-Raptor 250, just 2 years old with 500 miles on it. I'm impressed with it so far as it does as much as I want it to - so far! My biking goes back to 1959 and I haven't even tried to count the bikes I've had but remember lots of riding in all sorts of weathers and meetings with some characters along the way.
The V-Raptor is running very lean - needs half-choke to even run at all. I've raised the needle to the bottom notch but before I start altering the jetting does anyone on the forum know what the standard jets should be? I stand a chance of selecting better size jets if I know the standard setup is what I've got. Also, is the carb based on a Mikuni or a Keihin?
Cheers
David (Spada3man)

culcune · 10-06-2013, 10:06 PM

Welcome to here! The fact that the V-Raptors aren't available in N. America, I am guessing you aren't from here?

Weldangrind · 10-06-2013, 10:38 PM

Welcome!

Please show us pics, including the carb. We can likely guide you from there.

SpudRider · 10-07-2013, 01:16 AM

Welcome; we are glad you joined us.

Several members of these forums own V-Raptor motorcycles; I hope they will drop in soon to answer your questions.

Krasi_BG · 10-07-2013, 04:15 AM

Hi and welcome.

It's more of a Mikuni, but as far as I can tell its jets are "strange" so I wouldn't bet that standard Mikuni jets will be a direct fit.

Spada3man · 10-07-2013, 05:40 PM

Having somewhat recovered, I went out on the V-Raptor today to get some oil - I intend to use fully synthetic to help the cooling as well as the lubing of the engine and FS oil has definite benefits. I went in to Grantham and returned with a trip along the Great North Road in order to see how it ran... Quite badly was the answer! It ran very lean and hot - so that confirms that it is running lean and it wouldn't top 80kph.
I had a reply from Skyteam about the jets used and their man Charlie said that main is 110 and pilot is 50 in the latest models! so probably mine has different jets as it's a couple of years old. I need to strip the jets out to see what are in it and go from there. Let's hope they are marked. Other than that, I enjoyed the brief ride and will post some photos asap of the carb and the bike.

FastDoc · 10-07-2013, 07:13 PM

Welcome to the forum. There are a number of (older) people who have owned many many bikes and get a kick out of the challenges of CB ownership ;-)

Did you get your bike new? Could it have a partially clogged jet? Your symptoms fit.

They are jetted lean fromt he factory usually to meet emmisions requirements and give the best economy (I figure) but they usually run OK, especially with the stock airbox and exhaust, which I figure you are running?

Spada3man · 10-09-2013, 12:16 PM

Quote:

Originally Posted by FastDoc

Welcome to the forum. There are a number of (older) people who have owned many many bikes and get a kick out of the challenges of CB ownership ;-)

Did you get your bike new? Could it have a partially clogged jet? Your symptoms fit.

They are jetted lean fromt he factory usually to meet emmisions requirements and give the best economy (I figure) but they usually run OK, especially with the stock airbox and exhaust, which I figure you are running?

Hi again,
I've stripped out the jets and find the main is a 105 and the pilot a 38 - no wonder it wouldn't tick over! I've ordered the jet kit from Skyteam (the sprocket is extra - which makes the jets a bit expensive at £19,95!) so should be able to report any improvements when they arrive. I somehow doubt that a 105 will feed enough fuel - but I'll have the 105 to play with - when I can find my set of very small drill bits and can measure the two hole diameters... I'll do that before fitting the new jets and then plug chop to check the mixture... That way I'll have an idea of the flow rate difference and how it has affected the mixture. Fingers crossed!

10-06-2013, 06:10 PM	#1
Spada3man Join Date: Sep 2013 Posts: 5	Hello All... Hello the Forum! I've just bought a V-Raptor 250, just 2 years old with 500 miles on it. I'm impressed with it so far as it does as much as I want it to - so far! My biking goes back to 1959 and I haven't even tried to count the bikes I've had but remember lots of riding in all sorts of weathers and meetings with some characters along the way. The V-Raptor is running very lean - needs half-choke to even run at all. I've raised the needle to the bottom notch but before I start altering the jetting does anyone on the forum know what the standard jets should be? I stand a chance of selecting better size jets if I know the standard setup is what I've got. Also, is the carb based on a Mikuni or a Keihin? Cheers David (Spada3man)
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10-06-2013, 10:06 PM	#2
culcune Join Date: May 2006 Location: Yuma, Arizona Posts: 9,035	Welcome to here! The fact that the V-Raptors aren't available in N. America, I am guessing you aren't from here? __________________ "They say that life's a carousel, spinning fast you got to ride it well..." TGB Delivery Scooter 150 TMEC 200 Enduro--carcass is sadly rotting in the backyard
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10-06-2013, 10:38 PM	#3
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Welcome! Please show us pics, including the carb. We can likely guide you from there. __________________ 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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10-07-2013, 01:16 AM	#4
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	Welcome; we are glad you joined us. Several members of these forums own V-Raptor motorcycles; I hope they will drop in soon to answer your questions. __________________ 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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10-07-2013, 05:40 PM	#6
Spada3man Join Date: Sep 2013 Posts: 5	First ride... Not quite a tragedy... Having somewhat recovered, I went out on the V-Raptor today to get some oil - I intend to use fully synthetic to help the cooling as well as the lubing of the engine and FS oil has definite benefits. I went in to Grantham and returned with a trip along the Great North Road in order to see how it ran... Quite badly was the answer! It ran very lean and hot - so that confirms that it is running lean and it wouldn't top 80kph. I had a reply from Skyteam about the jets used and their man Charlie said that main is 110 and pilot is 50 in the latest models! so probably mine has different jets as it's a couple of years old. I need to strip the jets out to see what are in it and go from there. Let's hope they are marked. Other than that, I enjoyed the brief ride and will post some photos asap of the carb and the bike.
	0

10-07-2013, 04:15 AM	#5
Krasi_BG Join Date: Nov 2011 Location: Sofia, Bulgaria Posts: 436	Hi and welcome. It's more of a Mikuni, but as far as I can tell its jets are "strange" so I wouldn't bet that standard Mikuni jets will be a direct fit.
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10-07-2013, 07:13 PM	#7
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Welcome to the forum. There are a number of (older) people who have owned many many bikes and get a kick out of the challenges of CB ownership ;-) Did you get your bike new? Could it have a partially clogged jet? Your symptoms fit. They are jetted lean fromt he factory usually to meet emmisions requirements and give the best economy (I figure) but they usually run OK, especially with the stock airbox and exhaust, which I figure you are running? __________________ Happy to serve.
	0