Connecting G Crank in 5 star

KJR

New User
I am working on putting a G crank in a 5 Star. I am looking for advise on how to connect it to the input shaft for the rear end. Can you connect the G crank without machining the end of the crankshaft to drive the PTO input shaft? Any advise on how to make this work would be appreciated.
 
How does the 5 star drive the live section? I am not familiar with the 5 star enough to know what the back of the crank looks like.
 
The live PTO connects by a spline shaft that is driven by a hub that is connected direction to the crank shaft. The spline shaft runs inside a large spline shaft that connect to the clutch. The hub is connected by 4 bolts and 2 alignment pins. In addition to the threaded holes and the pins their is a approximately 2in diameter by 1.5 inch deep hole in the end of the crank that the hub recesses in to. With the G crank without the hub and more specifically the hole the spline input shaft hit the end of the crank before you can bolt it to the bell housing.

I am debating if I can have the hub machined flat so I do not have the machine the hole then drill 4 holes to mount the hub onto the G crank. I would also have to shorten the PTO drive spline shaft but I would still have about an 1" of spline remaining.

Any advise from some one who has done this is greatly appricated.
 
Sounds like you have figured it out. Mite be easier to get your G crank bored, than change the pto shaft. They don't come out easy.
 
When I put the 403 crank in my 5 Star, I bored the end of the crank to match the back of the 283 crank. Doing that allowed everything to bolt together as it did before. The hole is only for clearance. Nothing is located or held in place by it.
 

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