polini corsa big bore kit

[nate_lohs]

hey ive seen 2 different polini corsa big bore kits. ive seen 72cc and 70cc. are they both pretty much the same besides for the 2cc's? i think they are relatively the same price too. i called vtcycles to see if they had any but they said they dont get them in very often, anyone know where i could get one?

[MySpree]

corsa and contesta, corsa = fast raceing contesta = put put, but still perty fast.

[nate_lohs]

im not referring to the contesta kit. im only referring to the corsa. on vtcycles its listed as being 72cc. i called another hawaii shop , cycle imports of hawaii and asked if they had it. they said they did but it was 70cc. did they just think i meant the contesta? and just to verify the part number for the corsa, is it 119.0077/R ?

[MySpree]

well, some people are retarted, the corsa is a 72, so if someone calls it a 70, then whatever, its all on peoples opinions, like these bores, arent really what they seem, there usually 2 cc smaller then they say they are, like the 65cc kits for aeros and elite se50s are really 63cc kits, measured it myself plush others have measured.

[xela_p2004]

Whats the bore size on that aero kit you measured? I have seen some kits state they have a 46mm bore and some state a 47mm bore.

[Rabbi]

I've seen places referring to the Corsa & Contessa as a 68cc kit... is this possible? They had the same product code as other Corsa kits

[85stroka]

It depends on the crank, the older elites with a af09 might have a shorter stroke- 87 elite,85-87 aero and the sa 88 elite Lx
But is the stroke is 41.4mm On a 94 and Up Elite S and SR,and the corsa is a 47mm piston that's 71.8cc
But I think strokeitimports.com has it listed as a 40.4 which would come out as 70.1cc ,so it all depends on the crank.

[veedubh20]

jog crank 50 is 39.2 mm stroke X bore 47mm = 68cc. 10mm pin.