Hurumph .
Contrary to popular belief ??
The Double Star , and to a degree , Stalker - are said to pirate their ' specs ' ,
Particularly the DS 60 . Ive a pic of a DS 40 chamber somewhere - essentially ' a bowl ' .
The DS 60 Lite might be said to be a derivitive of the earlier ST 45/51/56 Plain Bearing 'V ' engine .
V Early 'V' 60 I have , dual ring - short rod - has open chamber ( No Squish Band -or minimal ) head .
Im presumeing maybe the Hemi is rather similar .Will recheck the timing on this ,
The Merco 49 ran steady and strong on the ( Original ) ' Stalker ' 130/110 sleeve timing .But little round shaft port .
Might try setting a pdp 60 at the 130/110 timing - for steady four stroke run ,
perhaps .
Im sure the ' Big Jim ' motors are out there , he mustve done a ton . Wonder if theres any destinguishing marking / engraving
or somesuch .