Hey all, don't post much but read a BUNCH. I always hate when someone says I threw this "part" on the bike and it just worked. But didn't post the settings.
Wanted to post up settings for an SR250 that I just tested.
1980 Yamaha SR 250 Carb Model: Mikuni VM32 then changed these items :: Main Jet:190 Pilot Jet:22.5 Needle JetJ
5 Needle:6DH3 AJ:0.9 Slide:2.5
Stock plugs. 900 feet above sea level.
I used this throttle cable but had to modify the end going into the throttle tube. I suggest calling motion pro for cable.
Motorcycle Spare Parts Black 39" Throttle Cable Wire for Honda CG125 http://www.amazon.com/gp/product/B00H8RWFGA/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
I used this crankcase breather
Uni Filter UP-103 1/2" Clamp-On Breather http://www.amazon.com/gp/product/B000OO0XLS/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
This carb Mikuni Round Slide VM Series Carburetor (VM32-33) - 32mm VM32-33 (and ordered the items above that I needed from jetsrus)
http://www.amazon.com/gp/product/B000GV8Q90/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
this filter with uni oil I already had. Uni 2-Stage Angle Pod Filter - 58mm I.D. x 102mm Length UP4229AST
http://www.amazon.com/gp/product/B000N5XSVA/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
This exhaust (almost as quiet as stock. so I like) Emgo Wide-Mouth Megaphone Universal Muffler 80-84013
http://www.amazon.com/gp/product/B000GVCI4Y/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1
I found the carb setup on a dutch site awhile back because my stock carb the arms that hold the floats one was cracked and dangling. Well the results of the VM32...
rocking.
It is really close. And should be able to dial in easier when my new non-leaking fuel shutoff comes in. Starts and idles good. throttle response is very good. It is hanging a bit when you close the throttle quickly though so still need to tweak some. But was able to ride it around the neighborhood easily.
Word of caution though. I had to adjust the floats as they were not set at 22-24mm, and all the parts in the carb listed above had to be changed from stock. So that $90 carb will cost a bit more to setup. The carb does fit in the intake boot on the engine side you just have to cap off the vacuum line that feeds the fuel shutoff unless you keep the stock one. It is not long enough to reach the stock airbox though.
This fuel shutoff is what I just ordered. Yamaha 5LP245000100 Fuel Cock Assembly
http://www.amazon.com/gp/product/B004K9I25C/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
I hope this helps.
Wanted to post up settings for an SR250 that I just tested.
1980 Yamaha SR 250 Carb Model: Mikuni VM32 then changed these items :: Main Jet:190 Pilot Jet:22.5 Needle JetJ
5 Needle:6DH3 AJ:0.9 Slide:2.5Stock plugs. 900 feet above sea level.
I used this throttle cable but had to modify the end going into the throttle tube. I suggest calling motion pro for cable.
Motorcycle Spare Parts Black 39" Throttle Cable Wire for Honda CG125 http://www.amazon.com/gp/product/B00H8RWFGA/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
I used this crankcase breather
Uni Filter UP-103 1/2" Clamp-On Breather http://www.amazon.com/gp/product/B000OO0XLS/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
This carb Mikuni Round Slide VM Series Carburetor (VM32-33) - 32mm VM32-33 (and ordered the items above that I needed from jetsrus)
http://www.amazon.com/gp/product/B000GV8Q90/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
this filter with uni oil I already had. Uni 2-Stage Angle Pod Filter - 58mm I.D. x 102mm Length UP4229AST
http://www.amazon.com/gp/product/B000N5XSVA/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
This exhaust (almost as quiet as stock. so I like) Emgo Wide-Mouth Megaphone Universal Muffler 80-84013
http://www.amazon.com/gp/product/B000GVCI4Y/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1
I found the carb setup on a dutch site awhile back because my stock carb the arms that hold the floats one was cracked and dangling. Well the results of the VM32...
rocking.
It is really close. And should be able to dial in easier when my new non-leaking fuel shutoff comes in. Starts and idles good. throttle response is very good. It is hanging a bit when you close the throttle quickly though so still need to tweak some. But was able to ride it around the neighborhood easily.
Word of caution though. I had to adjust the floats as they were not set at 22-24mm, and all the parts in the carb listed above had to be changed from stock. So that $90 carb will cost a bit more to setup. The carb does fit in the intake boot on the engine side you just have to cap off the vacuum line that feeds the fuel shutoff unless you keep the stock one. It is not long enough to reach the stock airbox though.
This fuel shutoff is what I just ordered. Yamaha 5LP245000100 Fuel Cock Assembly
http://www.amazon.com/gp/product/B004K9I25C/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
I hope this helps.
