Hi grumpy, I've done a bit more research on this engine...The "Torque-Master" is 98cc capacity and from what I have read is only 2 HP and known as the Villiers Model 7F engine. Here is a pic of the Pace, same as the old mans, with this engine fitted.
[Linked Image]
cheers2

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin