FlatheadsForever87
Member
Sometime last week I purchased a new to me Raptor 3 from a local Bob's 4 cycle fella. Price was right hell why not. Upon external inspection all seemed to check out A Ok. Noticed later that the carb is cracked in the rear air horn area, fuel tank bowl was rusted out ect. But that's besides the point. Next day I removed the head, crankcase cover, valve cover, carb from block and from tank, and flywheel for a thorough inspection. These are my findings so far...., 08' ARC Billet rod, std bore piston, cylinder due for rehome, blocked decked minimally piston pop up back of cylinder and in the hole on front, head milled very lightly, ground cam, welded lifter bore area, champhered lifter bores, spring pockets cut, after market billet valve cover hose hold down, 3 bolt overhead carb saver, aluminum velocity stack, 5 degree flywheel key, 3 stage behind the seat header with Stock RLV silencer with Rlv silencer clamp, that's all I can think of for now.
The issues i have had are simple things but could have been a real headache if I hadn't luckily approached it with a somewhat experienced mindset. The Long brass pick up tube had a very small hairline fracture running halfway down it. I am so grateful I solved this issue so easily. Because this time last year this issues would have tested my character to a point I'd rather not admit. Lol. Second thing I noticed was there was not the tell tale valve float scar on the head. Couldn't imagine why not with a ground stock cam. Lastly I noticed upon flywheel removal that the 5 degree key was, yep you guessed it, backwards. Put it in correct after lapping in flywheel. Finally I Lapped in the valves real good cleaned up everything real nice and buttoned it all back together. First pull on the rope and away she goes. So the questions I have for the pros. Was this key installed retarded intentionally? If so what was the intent? Next question is this the reason why the valve scar was not made in the head? Thanks to all who took the time to read my chicken scratch. And double thanks in advance to all that will shed light on this to my measly little brain.
The issues i have had are simple things but could have been a real headache if I hadn't luckily approached it with a somewhat experienced mindset. The Long brass pick up tube had a very small hairline fracture running halfway down it. I am so grateful I solved this issue so easily. Because this time last year this issues would have tested my character to a point I'd rather not admit. Lol. Second thing I noticed was there was not the tell tale valve float scar on the head. Couldn't imagine why not with a ground stock cam. Lastly I noticed upon flywheel removal that the 5 degree key was, yep you guessed it, backwards. Put it in correct after lapping in flywheel. Finally I Lapped in the valves real good cleaned up everything real nice and buttoned it all back together. First pull on the rope and away she goes. So the questions I have for the pros. Was this key installed retarded intentionally? If so what was the intent? Next question is this the reason why the valve scar was not made in the head? Thanks to all who took the time to read my chicken scratch. And double thanks in advance to all that will shed light on this to my measly little brain.