SOHC.co.uk Forums > CB350/400
My New Project arrives after a 44 year wait!
Nurse Julie:
You're getting on well now Dave. Well done.
Laverdaroo:
Closer than ever before, well done Dave you’re almost there buddy, keep it up
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McCabe-Thiele (Ted):
I don't claim to be any kind of expert on 400 carbs, I was lucky I guess as my 400 runs fine having only done a bench synch.
I recently posted a U Tube video link on carb adjustments that might help me with my 500 when I put the carbs back on.
FWIW my thoughts are if it needs choke all the time to start from warm that sounds like it's running on the lean side. As you know that might be due to an air leak on the intake between carb & cylinder head as well as adjustment on the side screws.
My 400 is running on NOS Keyster Brassware with aftermarket floats - standard air box/filter set up. I did take quite a lot of time setting the float levels. I also bench synched them with a narrow gap on the lifters - I used a very small drill shaft IIRC it was 3/32".
I used an inline filter as a precaution against tank rust as mine was pretty scabby inside When fitting the throttle cables I relied on a visual check that they allowed the carbs to shut against the main stop screw.
I suspect float levels have more impact at higher revs when more fuel is needed to pass through the main jet needle. Idle issues and hanging throttle more likely linked to the slow running jet/adjustment if no air leaks.
My apologies if I'm stating the obvious.
Laverda Dave:
Another 3 hours in the garage today with some new V Power fuel and it's still not running right. Although no 4 is firing it's taking its time to get hot. It was a pig to start from cold as well. I've been through everything on the ignition side and cable free play etc and it's all pointing to fueling. So it's going to be carbs off to check float heights and blockages.
At the moment I don't have the enthusiasm to do it, I'm just so fed up with it and it's no longer enjoyable but has become a never ending and expensive chore.
I'm going to ride my bikes for a while and come back to it.
AshimotoK0:
I feel your pain .... but keep yer pecker up Dave. :) walk away from it for a few days and then go back to it.
It will be one hell of a classy 400 when finished and you should be proud !
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