help needed with Engine ID
Posted: Mon Apr 25, 2016 5:03 pmi bought a used series 2 engine last year which I'm currently rebuilding. I looking for a potential replacement crank as the existing bigend bearing is shot but having difficulty in establishing which cranks will fit my case.
The case number is 150Li * 796757 and when I check the various lambretta records it suggests that the cranckcase is a 125cc series 2 ?
I have checked Sticky's manual and the early Series 1 cranks had 25mm dia bearing journals both sides but there is no mention if the early series 2 also had 25mm dia journals both sides .
Ass far as I can see I will need to replace the crank with another series 1 crankshaft unless I change the mag housing to the series 2/3 which has the larger mag bearing OD...... but then do series 2/3 cranks have a 25mm mag side journal and bearing ID ?
grrrrrrr
The case number is 150Li * 796757 and when I check the various lambretta records it suggests that the cranckcase is a 125cc series 2 ?
I have checked Sticky's manual and the early Series 1 cranks had 25mm dia bearing journals both sides but there is no mention if the early series 2 also had 25mm dia journals both sides .
Ass far as I can see I will need to replace the crank with another series 1 crankshaft unless I change the mag housing to the series 2/3 which has the larger mag bearing OD...... but then do series 2/3 cranks have a 25mm mag side journal and bearing ID ?
grrrrrrr