carb jets

coleary15 · 01-06-2010, 07:29 PM

i ported my head on my roketa 200, and i need bigger jets for it, currently my motor is apart, because my piston seized i think due to the lack of oil even though it had plenty.

2 questions - where can i get a new piston and cylinder w/connecting rod, and where can i get main jets that fit in my carb along with air mixture screw(keeps falling out)

all help is appreciated guys, thanks,
chris

SpudRider · 01-06-2010, 10:24 PM

If I may ask, what model Roketa do your own?

Spud

coleary15 · 01-10-2010, 09:07 PM

its a 2004(if that matters) db-27 (rjd-200)

also, where could i get a top end rebuild kit? piston, rings, circlips,wrist pin, and gaskets

thanks,
chris

Weldangrind · 01-10-2010, 09:34 PM

coleary15, if you take the right side cover off of your engine (assuming that it's a Honda clone), you should see the oil pump at the upper right. There will be a cover that is secured by three Phillips head screws; remove the cover and make sure that the area behind it is clean. That's where debris normally hides, and it restricts the oil into the pump, thereby starving it.

SpudRider · 01-10-2010, 11:16 PM

Roketa sell parts for the DB-27 (RJD-200) motorcycle at its website.

http://www.roketa.com/product/produc...D=0&proID=2037
http://www.roketa.com/product/parts_...SSEMBLY%282%29

However, it appears Roketa sells only the complete engine, and the complete carburetor. :( I am not sure, but I assume the Roketa DB-27 engine is a Honda clone; if this is so, you should be able to find Honda parts that will work. I am not very familiar with your motorcycle; therefore, I hope other Roketa DB-27 owners will offer their advice.

Spud

coleary15 · 01-11-2010, 07:36 PM

i checked my local honda/suzuki/kawi dealer and they had jets, but there is some adapter on the honda carbs that the jets screw into bc the chinese main jet looks like a really big pilot jet lol its wierd

Weldangrind · 01-12-2010, 01:19 AM

Maybe the photos in this thread will assist you (page four): http://www.chinariders.net/modules.p...r=asc&start=45

SpudRider · 01-12-2010, 10:12 AM

Quote:

Originally Posted by Weldangrind

Maybe the photos in this thread will assist you (page four): http://www.chinariders.net/modules.p...r=asc&start=45

That is a superb post, WG; the photographs are beautiful! I definitely need to spend more time over at the ATV forum!

Anyone looking for motorcycle carburetor parts, or carburetor jets, should check out the following website.

http://www.motorcyclecarbs.com/index.cfm

Spud

coleary15 · 01-12-2010, 04:11 PM

thats how my carb should look inside, but im missing the adapter that the jet screws into, my main looks just like a longer pilot, about twice the size.

where can i get that adapter?

SpudRider · 01-12-2010, 04:22 PM

Quote:

Originally Posted by coleary15

thats how my carb should look inside, but im missing the adapter that the jet screws into, my main looks just like a longer pilot, about twice the size.

where can i get that adapter?

If you have a Mikuni carburetor, you can purchase Mikuni needle jets at the following link.

http://www.motorcyclecarbs.com/Mikun...e_Jets_C36.cfm

Spud

Weldangrind · 01-12-2010, 09:15 PM

Quote:

Originally Posted by SpudRider

That is a superb post, WG; the photographs are beautiful! I definitely need to spend more time over at the ATV forum!

Thanks Spud.

01-06-2010, 07:29 PM	#1
coleary15 Join Date: Jan 2008 Posts: 127	carb jets i ported my head on my roketa 200, and i need bigger jets for it, currently my motor is apart, because my piston seized i think due to the lack of oil even though it had plenty. 2 questions - where can i get a new piston and cylinder w/connecting rod, and where can i get main jets that fit in my carb along with air mixture screw(keeps falling out) all help is appreciated guys, thanks, chris
	0

01-06-2010, 10:24 PM	#2
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	If I may ask, what model Roketa do your own? Spud __________________ 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
	0

01-10-2010, 09:34 PM	#4
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	coleary15, if you take the right side cover off of your engine (assuming that it's a Honda clone), you should see the oil pump at the upper right. There will be a cover that is secured by three Phillips head screws; remove the cover and make sure that the area behind it is clean. That's where debris normally hides, and it restricts the oil into the pump, thereby starving it. __________________ 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
	0

01-10-2010, 11:16 PM	#5
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	Roketa sell parts for the DB-27 (RJD-200) motorcycle at its website. http://www.roketa.com/product/produc...D=0&proID=2037 http://www.roketa.com/product/parts_...SSEMBLY%282%29 However, it appears Roketa sells only the complete engine, and the complete carburetor. :( I am not sure, but I assume the Roketa DB-27 engine is a Honda clone; if this is so, you should be able to find Honda parts that will work. I am not very familiar with your motorcycle; therefore, I hope other Roketa DB-27 owners will offer their advice. Spud __________________ 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
	0

01-12-2010, 01:19 AM	#7
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Maybe the photos in this thread will assist you (page four): http://www.chinariders.net/modules.p...r=asc&start=45 __________________ 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
	0

01-10-2010, 09:07 PM	#3
coleary15 Join Date: Jan 2008 Posts: 127	its a 2004(if that matters) db-27 (rjd-200) also, where could i get a top end rebuild kit? piston, rings, circlips,wrist pin, and gaskets thanks, chris
	0

01-11-2010, 07:36 PM	#6
coleary15 Join Date: Jan 2008 Posts: 127	i checked my local honda/suzuki/kawi dealer and they had jets, but there is some adapter on the honda carbs that the jets screw into bc the chinese main jet looks like a really big pilot jet lol its wierd
	0

01-12-2010, 04:11 PM	#9
coleary15 Join Date: Jan 2008 Posts: 127	thats how my carb should look inside, but im missing the adapter that the jet screws into, my main looks just like a longer pilot, about twice the size. where can i get that adapter?
	0