Gents,
I'm seeking your guidance to my on going issue regarding the bike not behaving as I'd like.
Especially in reference to Dellorto carburettors....
Previously, I had the issue with timing and pick-up positions. That is now sorted. Horizontal TDC and pick-up gaps set to 0.4 clearance to the highest step on the flywheel.
The timing is about 3 degrees advanced.
Upon further investigation, I had some dodgy wiring connections at the connector block which I re-crimped and solded correctly. Then the wiring at the Bosch terminals was wanting also. Now they are re-crimped and solded. Then, I had incorrectly wired the ignition coils to have the +/- reversed. That is sorted now too.
Now, I have consistent strong sparks, ignition coils not burning my fingers to the touch.... Starts like a dream...
Except, my carbs are not balancing nicely. I can't get a consistent idle and it's either revving high or stalling. The idle adjustment screws make a difference, the air/fuel mixture screws don't. It will both idle high for a while then the revs fall to a stall... It is slowly returning a normal idle then will stall...
Carburettor rebuild history: PHF36 AD Horiz. & AS Vert.
New float valve and seats to standard specs.
Float levels set to spec @ 17.5mm
New gasket kits and standard pump jets.
Cleaned idle & main jets of standard specs. Except have noted that the K4 Needle is set to top notch not the 2nd as specified.
Engine setup: Modified Giannelli 2 into 1 exhaust shortened with F/Glass wrapped steel perforated baffle
Carby trumpets: open gauze Mallossi short 38mm
What carby modifications would you suggest I use for this setup listed above please?
Return it to a standard spec or go larger with the jets?
I'm all ears!
Cheers,
Steve
Carby:
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Exhaust:
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