[BEEFKING69]

Originally Posted by neo71665

Yeah you have a P engine. They have an oddball head height and/or head bolt spacing. You also have the odd double chain (I feel you pain there my kinroad has it also so different sprockets are none). From my limited understanding they are also stroked from the factory and make a few more horses than a normal 150 gy6. Take the valve cover off and measure the head Studs Diagonally, If they measure 3" then all the 157QMJ parts will fit. It will just require a timing chain that is one link longer. If the studs diagonally measure 3.25 then the standard 157QMJ parts will not fit.

As for the reverse kit good luck, looks like a model specific. You might be able to swap to a more common one or swap the engine/reverse to a more common gy6 to make part easier to find.

You dont have to have the double chain as a single chain will work on the double sprocket so you can change axle sprockets as long as you make sure it lines up with one side or the other of the output sprocket......I read a while back that the "P" motors have better flowing heads and thats where they make the extra HP....Ive also seen mention that they come with a "sport" cam but as far as i know the bore and stroke are the same as the other style gy6 150s. Does that motor have 2 bolt or 4 bolt valve cover?