Mugello 186 piston shims

[jrm]

Regarding fitting mugello 186 kit,i've fitted new crank & bearings am on to piston.Do i need to fit piston shims as there is quite a gap between small end bearing & piston(approx 3-4mm).The crank is not shimmed.

[byron]

how much sideways movement of the rod is there at the big end ?

[jonnyb]

Might be worth buying a wider small end bearing assuming your crank is shimmed, Cambridge lambretta have them in stock I think

[Gazbo72]

Regarding fitting mugello 186 kit,i've fitted new crank & bearings am on to piston.Do i need to fit piston shims as there is quite a gap between small end bearing & piston(approx 3-4mm).The crank is not shimmed.

Doesn't using shims or not depend on the crank that your useing ???

[jrm]

Thanks 4 replying Byron.Just measured 1.3 -1.4mm.

[Gazbo72]

My last post sounds a bit daft . I have just fitted a GP200 crank with the large gap at the little end bearing. Reading sticky's book it says this type of crank doesn't need shims.

[jrm]

BUMP