Heres a load of waffle . ER , . . . Engine Review of a MVVS STUNT . http://clamf.aerosports.net.au/newsletters/ACLN/Issue67.pdf

Theres a variety of set ups for the suckers .

The piston / liner should realy be regarded as ' one position ' once fitted . So if unused Rear Ex.'d be most peoples option .

Running on the bench ' t the break ' 4-2 , and pinching the fuel tube to o fully two stroke , releasing it , the engine should drop straight into the four stroke .
thats the theory, anyway .

MVVS have been around sine Noah was a boy , building competition engines .