Scooterotica

I ordered a standard 200cc Asso piston with three thick rings from but instead I got a same brand piston with two thin rings. The piston is going to be run on a standard engine with 60 mm crank. Are those two ring pistons worth using or should try to get the piston swapped (the shop has no three pistons in stock and is located overseas)?

Thanks!

2 thin ring piston is better m8

just check that piston skirt is not cut on inlet side as it will alter inlet timing, alot of these are cut by 3mm

you,ve been supplied with a much better piston assembly than you asked for........
why on earth would you even consider or insist on using the crap one.........?

I've got a new 3 ring one if you want to swap.........................

sean brady scooters wrote:
you,ve been supplied with a much better piston assembly than you asked for........
why on earth would you even consider or insist on using the crap one.........?

Surely that was the point of the question Sean - the chap didn't know which was the better of the two...

i was under the impression that he thought the three ring one was better.............and was in fact a bit dissapointed by the two thin ring replacement.........

Different interpretations there matey
Guess Rakki has his answer though by now :bald:

Thanks for answers.

I was after three ring piston because I have Finland's greatest collection of thick piston ring sets and my experiences from two ring piston wasn't that good (albeit it wasn't Asso one), but as the general consensus is that the one I got is good, I'll be happy with that.

The piston has been cut couple of mm's from the inlet side, does someone know if it's originally from Rapido or some other piston ported kit?

I had been given to believe that removing 3mm from the inlet side of the piston gave an improvement in mid range ? have I been misled.
Tell me before I get my hack saw out on my new piston Please.

Lazarus wrote:I had been given to believe that removing 3mm from the inlet side of the piston gave an improvement in mid range ? have I been misled.
Tell me before I get my hack saw out on my new piston Please.

Think thats the asso piston I got from AF for my stage 4..Sean..?