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300 Factory Carb Options

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Afternoon all. I've got a 2015 300 cabestany and whilst I've had little trouble with the keihin on it they've always struck me as a bit tempremental.

If I do get into the Scottish for next year I'm thinking of changing back to the good old dellorto. Is this much of a job to do given the air box set up?

im glad youve asked that cause im thinking about doing the same thing on my 2013 300 .  If its not the overflowing problem its something else, they are crap!

Requires a spigot adapter and correct cable. Inlet rubber as well I think. Call splat shop to be sure. Not too hard to do.

Wrong Cope. It is very confusing since they have changed the vacuum in `14 to the center case on the left side. Since they did this the new manifolds come plugged even though the bung still is there. The `15 would be easy to do with the manifold and shorter cable. You also need this weird shaped adapter for the air box as the Del orto is smaller at both ends. The 13 would be hard because you need a vacuum port on the manifold. Unless you got lucky and found old stock. 

 I just converted a `12 250 to a Keihin, I was p****d as it should have been pretty simple.

 The 13 would need manifold 3154, cable C076 and adapter 2369. Good luck on the manifold being a bolt on item.

Edited by lineaway

 Got to be a reason the PHB26 was the popular choice. Never had a problem with them. Only time I have worked on the VHST I could not get pilot jets. But that was long ago.  

  • Author

I guess what I'm asking is do you gents think a dellorto will give me more hassle in Scotland than the keihin? Would be interesting to know what Emma Bristow, James fry and Chris Pearson used on their bikes in Scotland last year?

in what way do you mean tempramental DMC?  what jetting are you running?  

  • Author

Tbh I haven't looked at the specific jetting. I bought it off a mate that I know had toyed with it a bit, along with boysen reeds.

It just seems that the carb needs regular cleaning which i know is maintenance but it doesn't seem to take much to upset it's mixture. The dellorto seems to be more reliable, less fussy!

there is a link on the splatshop website for setting the float height correctly on the keihin carb , check it out . 

 

check jetting , im on the west coast of scotland and runnin 125 main , 48 pilot , needle 2nd clip from bottom  , air screw 3/4 turn out from fully in. 

 

keep the air filter oiled  , make sure the seal around the top of the airbox cover is clean ect ect ....  

 

carb cleaning is a major part of maintenance mate unfortunatly 

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