I just got my second Corsa today, first one I didnt port or chamfer it. The guy I sold the scoot with it on is still running it hard everyday so I know its not necessary but is it a good idea being as Polini will actually warranty there product not like Malossi. But if I modify it the warranty is voided of course. Its just nice to see a manufacturer stand by his product. I got a malossi 65cc bore and AF05e for free because the malossi cast iron cylinder chipped away at the ports and they wont warranty it in any way. I just honed and chamfered it, threw in a new piston and off I went, but having an implied and expressed warranty is always tops.
Back to the real question though, how many people with the Corsa have not chamfered it prior to installing and never had any issues also? After the malossi ordeals I dont want to waste another $300 but it will take 3 days for the shop to get to it. I leave in 4 days for 2 weeks.
Oh and how many people got new head bolts with their corsa, mine didnt have any.
