So one of the things I've noticed now I've been able to ride the bike a bit is that rolling on and off the throttle is quite different from a modern bike. When I roll off the declaration seems a bit uneven/jerky not a smooth engine brake. Is this how all 180 Jotas are? I really can't remember from previous ownership.
Rolling off the throttle
- Thread starter cbertozz
- Start date
Modern bikes with FI have very light throttle action, and more than likely are 1/4 turn. Laverdas usually need a couple of twists to get full action. Some opt for lighter return springs, seems there 3 strengths of these. I think the WA Guzzi bloke sells them.Another option is to pull the accelerator pump actuator out of the slides, that lightens the action a lot. I don't like this, I have done it on other bikes with a Del carb, a Husky and it lost so much off idle punch. Others do it and like the results.
Maybe try some Silicon spray lube on those accelerator pump actuators in the groove they work in, might easy up there action.
Maybe try some Silicon spray lube on those accelerator pump actuators in the groove they work in, might easy up there action.
G
Grant
Guest
Engine braking on a 180 is good and I use it sometimes instead of using the brake.
If your carbs are gummed/clogged/not working correctly this can cause the carbs to hang when you shut the throttle and can cause the symptoms you describe.
If your carbs are gummed/clogged/not working correctly this can cause the carbs to hang when you shut the throttle and can cause the symptoms you describe.
As Grant said...
And check ignition timing at idle speed. If too far retarded, the rev drop to idle can be erratic at best. Idle isn't too stable either. This can be corrected to a point by enrichening idle mixture, but that brings along a bunch of other problems. As you're already running the Redax/Ignitech/Sachse unit and Red set up the engine, timing at full advance should be spot-on. I'm not familiar with the available timing curves and their influence on idle timing, this should be around 5-10?BTDC to obtain steady and reliable idling.
Once idle is sorted and carbs are correctly set up, engine braking will be smooth and predictable, with no great amount of pops and bangs.
And put some clips on the fuel lines! Before they harden, they get rather soft and mushy, can slip off quite easily.
piet
And check ignition timing at idle speed. If too far retarded, the rev drop to idle can be erratic at best. Idle isn't too stable either. This can be corrected to a point by enrichening idle mixture, but that brings along a bunch of other problems. As you're already running the Redax/Ignitech/Sachse unit and Red set up the engine, timing at full advance should be spot-on. I'm not familiar with the available timing curves and their influence on idle timing, this should be around 5-10?BTDC to obtain steady and reliable idling.
Once idle is sorted and carbs are correctly set up, engine braking will be smooth and predictable, with no great amount of pops and bangs.
And put some clips on the fuel lines! Before they harden, they get rather soft and mushy, can slip off quite easily.
piet
D
Davo
Guest
And swap them out for Mikuni flat slidess. Chalk and cheese.
G
Grant
Guest
Add up the cost of new parts x 3, labour and end result vs cost of a set of Mikuni RS36s plus mounting rubbers.
Might not be that much difference financially, but as Davo says the Mikunis make a big difference.
Might not be that much difference financially, but as Davo says the Mikunis make a big difference.
Closing this thread off as well. The bike now rolls off nicely, with consistent engine braking and no stutter. Another issue to put down to bad electrics/coil/caps etc. Will make roll-on, roll-off country riding more enjoyable, and also town riding surprisingly.
Simonr501
Hero member
- Location
- Lympne, Kent. UK
As the original author you can 'Lock' the thread if you like to stop further comments - like mine!!!!!!!!
Laverda SF
Hero member
More BS as a Motorcyclists if your Fuel Cocks don't work!
R
Reggie3cl
Guest
Too late, the Village Idiot has had his say.