Which JCC piston is supposed to work with the Spree? I found one that fits a 43mm bore, with (what looks like) the right compression height and a 10mm wristpin. This only gets you to 55cc, though, not 60cc. 60cc would require a 45mm piston. Stock is of course 41mm.
The Spree was (I believe) also known as the "Tact," as sold in Japan. AF05E powerplant? The JCC piston is listed as an oversize "Tact" piston. I need to measure a real piston to ensure that the deck height is right. And find a dealer.
There's only about 4.7mm excess material around a Spree bore. I could see removing 1mm. 2mm might be pushing it?
Some links:
www.jccpiston.com OEM site
http://www.network54.com/Forum/26489 Expressly Moped site. I think the answer is here somewhere.
If anyone can find this I'd appreciate it. The Expressly Mopeds site is a hard one to mine for info. Relevant discussion occured around Jan 2002.
Which JCC piston for Spree overbore (55 - 60cc)?
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Which JCC piston for Spree overbore (55 - 60cc)?
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