Modern Vespa

Hello.
My mate has a PX125E and he wants me to give it a mild tune up.
I was going to replace the crankshaft and here's my question.

Option 1. Mazzuchelli race crank for £105
Option 2. Tameni standard crank for £92 and I grind the web to increase the timing to the same as the Mazz one.

I'm tempted to do the second one as I would like to have a go. Could I have your advice please?

Option 3. 60mm Mazz crank with 1.5mm base packer and 1.5mm grinding to raise the exhaust port.

Ha. you love them long stroke cranks Jack. Thank you.

for 13 pounds I'd just go for the Mazz

Because a 60mm crank is an easy way to do porting without doing any

Don't doubt Jack, he's seldom wrong...

Hello sdjohn.
I certainly don't doubt him. I have received a great deal of advice and respect him highly. Way back a hundred posts ago I was doing up my 125 and bought a 60mm crank but had time constraints which made me rebuild it as standard. Jack occasionally gives me a nudge about fitting it.

I've got the Southern Shakedown Rally next Month and then it's rebuild time.
I'm knocking my mates engine out next week which is going to remain a 125.
I put this post up because I want to dremel something.

well then, carry on and dremel away!