Smart carb my review
- Thread starter Diggs345
- Start date
Diggs345
Gold Level Site Supporter
Ill post a few pics up on the bike later when iv cleaned the bike.
On the 12 bike the cable wont fit into the adjuster on the top of the carb so i replaced it with the one in my venhill kit but then the standard cable was too short so i made up the venhill kit , i made a decent job of that but had to enlarge the hole of the throttle adjuster as the venhill ferule was too big , i will get a couple more kits and perfect it a bit more , but it worked perfectly all weekend as is .
Fitting the carb was simple enough , i removed all bolts from the subframe wiggled the carb in from the left side and fitted to the inlet boot , i then put a small ammount o heat into the airbox boot and fitted that and bolted up the subframe.
I fitted the slide and fuel tank and tried to start her but no go,When i put the bowl back on the carb the floats did not seat correctly and flooded my motor in a very short time , so it was off with the sprocket guard and tilt the carb over and try to reseat the floats , same again flooded bike .
Last go , i got a small zip tie and held the tang in the closed position while offering the bowl up and it finally worked , thats the price you pay for playing i guess , my fault totally.
After several kicks the bike fired up and after clearing the leftover gas had the best idle she has seen so far ( as others have said ) , i left the bike to idle for over 10 mins and she sat idling perfect at the same revs all the time , i gave her a blip on the throttle expecting her to be chocked up but not at all , instant response.
The following morning it was frozen outside and i went into the garage with the intention of trying to start her with no choke as a few have said they required no choke , i couldnt believe it the bike started first kick .
Out on the trails on sunday it very wet so not the best test , but the bike does run better than before , ou can ride a gear higher and there does seem to be more available power , there was a bit of a rich point at about 1/3 throttle , i did try to adjust the carb on the trail but i could not get it to work and im going to look at that later .
The only problem i had is when i gave another guy a go and he fell off , the bike flooded and took loads of kicking to restart , same when i fell off a couple of times , unless you are very quick to pick the bike up when falling off expect to kicking a lot , looks like i need some of those one way valves that were mentioned in the other thread.
After we had been riding for a easy couple of hours we stopped to fuel up , my bike took 4.45 ltrs and my mates standard 12 300 took 4ltrs , but bear in mind i run this carb exactly as it came out of the box .
So now im looking foreward to my next session so i can tinker a bit more and perfect the setup.
Chris
On the 12 bike the cable wont fit into the adjuster on the top of the carb so i replaced it with the one in my venhill kit but then the standard cable was too short so i made up the venhill kit , i made a decent job of that but had to enlarge the hole of the throttle adjuster as the venhill ferule was too big , i will get a couple more kits and perfect it a bit more , but it worked perfectly all weekend as is .
Fitting the carb was simple enough , i removed all bolts from the subframe wiggled the carb in from the left side and fitted to the inlet boot , i then put a small ammount o heat into the airbox boot and fitted that and bolted up the subframe.
I fitted the slide and fuel tank and tried to start her but no go,When i put the bowl back on the carb the floats did not seat correctly and flooded my motor in a very short time , so it was off with the sprocket guard and tilt the carb over and try to reseat the floats , same again flooded bike .
Last go , i got a small zip tie and held the tang in the closed position while offering the bowl up and it finally worked , thats the price you pay for playing i guess , my fault totally.
After several kicks the bike fired up and after clearing the leftover gas had the best idle she has seen so far ( as others have said ) , i left the bike to idle for over 10 mins and she sat idling perfect at the same revs all the time , i gave her a blip on the throttle expecting her to be chocked up but not at all , instant response.
The following morning it was frozen outside and i went into the garage with the intention of trying to start her with no choke as a few have said they required no choke , i couldnt believe it the bike started first kick .
Out on the trails on sunday it very wet so not the best test , but the bike does run better than before , ou can ride a gear higher and there does seem to be more available power , there was a bit of a rich point at about 1/3 throttle , i did try to adjust the carb on the trail but i could not get it to work and im going to look at that later .
The only problem i had is when i gave another guy a go and he fell off , the bike flooded and took loads of kicking to restart , same when i fell off a couple of times , unless you are very quick to pick the bike up when falling off expect to kicking a lot , looks like i need some of those one way valves that were mentioned in the other thread.
After we had been riding for a easy couple of hours we stopped to fuel up , my bike took 4.45 ltrs and my mates standard 12 300 took 4ltrs , but bear in mind i run this carb exactly as it came out of the box .
So now im looking foreward to my next session so i can tinker a bit more and perfect the setup.
Chris
nambo-trev
New member
Nice report man thanks for the info, I suspected that without the check valves. I wanted and was going to get the billet version but that one thing alone was why I'm waiting for the cast one.again Thanks for the review
Diggs345
Gold Level Site Supporter
Thanks for the replys ,
John , i took the choke cable off from day one of getting the bike , but i think you will find you dont need the choke , it was freezing outside and mine started up first kick
It seems to my eyes that the slide spring is a little too long and thats whats stopping the plunger/adjuster making contact with the screw on the top of the slide , ill have another look though before i trim it
John , i took the choke cable off from day one of getting the bike , but i think you will find you dont need the choke , it was freezing outside and mine started up first kick
It seems to my eyes that the slide spring is a little too long and thats whats stopping the plunger/adjuster making contact with the screw on the top of the slide , ill have another look though before i trim it
andoman
New member
Great report. Please let us know when you get it sorted.
Sounds like with the richness, you'll adjust it a click leaner?
Like Nambo, I was actually squeezing the trigger aiming at the billet unit. I stood down with concerns about flooding. I have logged hours of kicking on an old XR 600 in the late 80's. Each get-off was more tiring than the entire ride or race. No desire to re-visit that pain...
Sounds like with the richness, you'll adjust it a click leaner?
Like Nambo, I was actually squeezing the trigger aiming at the billet unit. I stood down with concerns about flooding. I have logged hours of kicking on an old XR 600 in the late 80's. Each get-off was more tiring than the entire ride or race. No desire to re-visit that pain...
Diggs345
Gold Level Site Supporter
There was a guy out with us on Sunday with an xr650 , he spent a lot of his time pushing out of bogs and kicking it, I did feel a little sorry for him but glad I have the bike I have.
I also got the chance to ride a exc 450, it felt so crude and every time you shut the throttle it stalled , good job it had es
I also got the chance to ride a exc 450, it felt so crude and every time you shut the throttle it stalled , good job it had es
