Mugello timing

[alanscottj]

Don't mean to hijack your thread bud, but can I ask what timing should be set at for a Mugello 198?

[Strummer10]

According to Cambridge Lambretta and Sticky's book 17 degrees before TDC is quoted as the optimum setting .

[Strummer10]

I also believe, the 17 degrees is now also the optimum setting for original steel barrels, although the book states 19 degrees. I'm not sure what's behind the timings becoming more retarded but understand its to do with modern petrol.

[alanscottj]

I also believe, the 17 degrees is now also the optimum setting for original steel barrels, although the book states 19 degrees. I'm not sure what's behind the timings becoming more retarded but understand its to do with modern petrol.

Cheers, I think mines set at 19, maybe that's why I holed it

[Strummer10]

Still learning set ups myself, but Stickys book talks about initially setting the timing to 16 degrees and then working it from there. Problem is getting the correct TDC position I think. As a fussy individual I find the 'stop dead method' a little non-scientific (and hear some merely place a screwdriver down the sparkplug hole to set the TDC). Then others say the dial gauge is non as certain as the 'stop dead method' so a little confused. I tend to use the gadget you screw into the sparkplug hole and do the 'stop dead method' then a secondary 'screwdriver method' check and they normally show an identical TDC .....so presume I have it.

However, IF the TDC concluded by these tests is off at all, the timing set up for BTDC could be way off and would be a real issue thereafter.................thus it would be useful if a more scientific gadget could be perfected for the task in the industry....

[dave411]

I have allways thought that a dial gauge is accurate.Allways used one when setting the timing on 2 stroke outboards,never had a problem.

[Strummer10]

I've not tried it with a dial gauge, may invest in one and see how it compares.....before casting my judgement on this way I guess. I'm still collecting lammy tools so this might be another investment made.