I`m running an old rude 150 OP on transom. Comp 105-110 Snap on.
No bracket.

Hole shot is good. MPG not so much.

Thanks for the info. Has anyone tried a turning point 4 blade?

Turning Point Mach 4 Express SS 4-blades are essentially copies of the Mercury/Quicksilver Revolution 4 series, with slightly more rake progression and a tad less tip cup. More stern lift than a Rev 4, but won't trim up quite as high before ventilating.

Here is a previous thread on the subject. Headhunter and his brother in law both have their df140s mounted on the transom. I can attest the performance is amazing with the Suzuki prop.
http://www.classicseacraft.com/commu...ght=headhunter