[shovelheadfreak]

first off i have not started the internals swap so not exactly sure what i have inside but have a 1970 alt motor with case damage, timing hole threads, motor mount breakage, primary lip broken so i picked up a 1981 case in good condition to swap out. i believe the earlier motors had a side oiling pinion shaft and later model has end oiling but if i use the early cam cover will i have troubles? i will double check the oil hole positions between the two cases as i believe there will be differences in the hole locations for the oil pump but as i mentioned i have not started the swap so old motor still in the bike. any other troubles anyone can think of before i open the can of worms? i realize the pinion bearing will need to be checked for fit and cam bearing replaced. i think the factory may have changed the thread size between the early and later model lifter bases also but unsure. this may end up being a winter project.

 

[Guest]

first off i have not started the internals swap so not exactly sure what i have inside but have a 1970 alt motor with case damage, timing hole threads, motor mount breakage, primary lip broken so i picked up a 1981 case in good condition to swap out. i believe the earlier motors had a side oiling pinion shaft and later model has end oiling but if i use the early cam cover will i have troubles? i will double check the oil hole positions between the two cases as i believe there will be differences in the hole locations for the oil pump but as i mentioned i have not started the swap so old motor still in the bike. any other troubles anyone can think of before i open the can of worms? i realize the pinion bearing will need to be checked for fit and cam bearing replaced. i think the factory may have changed the thread size between the early and later model lifter bases also but unsure. this may end up being a winter project.

The oil feed holes to the pinion shaft are in a diff. location...
Also the 81 case would need to run the 81-up oil pump.

The easy way to run the early crank in those cases would be to drill the pinion shaft for end oiling and run the 73-up cam cover....

The lifter block screws did get change to 1/4 X 20 in 1977....
No biggie there....A/M has them for doing the swap.
Your blocks should have taper holes....They make those taper screws in the later thread for running the early blocks....

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[BigDawg]

The oil feed holes to the pinion shaft are in a diff. location...
Also the 81 case would need to run the 81-up oil pump.

Beat me to it.

Later pumps are easy to come by though.

 

[Guest]

You be slow and I be fast......

Not all that bad for an Old Fart.....Huh..???.....

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[shovelheadfreak]

but as long as i run the early pinion/gear cover i will be ok correct or is it the oil hole location between the cover and case different ? and yep i thought the base screws and oil pump were different. thanks jim

 

[Guest]

but as long as i run the early pinion/gear cover i will be ok correct or is it the oil hole location between the cover and case different ? and yep i thought the base screws and oil pump were different. thanks jim

You can modify the early cover for a new feed hole location in order to keep the side oiler working.....

Would need to fill in the OG hole and redrill the new hole....

Some A/M company's made those in a dual pattern....

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[shovelheadfreak]

hate to sound stupid but what is A/M? sorry but i'm a old guy that needs words not initials.

 

[Guest]

After/market

Not from the Mo-Co

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[BigDawg]

You can modify the early cover for a new feed hole location in order to keep the side oiler working.....

Would need to fill in the OG hole and redrill the new hole....

Some A/M company's made those in a dual pattern....

I had a set of S&S Shovel cases that had both.

 

[shovelheadfreak]

damn no excuse for not figuring that out. maybe getting older than i realize. the stuff i ride the company forgot about years ago so when i need parts it is always aftermarket outfits. thanks guys. Jim

 

[Guest]

Dog-gone near a 1/4" from one hole to the other.....

What the A/M did was longate the hole....

I have photos of this....Will post them when I can find them...

damn no excuse for not figuring that out. maybe getting older than i realize. Jim

No Sweat......Shoot...

There for awhile I thought CL was a new Sportster model......It was for Crag's List....

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[shovelheadfreak]

that sounds great as i need all the help i can get. in damn near everything i do according to my ex girlfriend.

 

[Guest]

You can see what they did here with making one cover work on both year runs...

You will see that the feed hole in the two cases are not in the same location....
The early case has the feed hole about .250 in size....The 81 case feed hole is much smaller....

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[el_butche]

what the hell kinda shovel cone is that??? or am i too drunk to see.... looks nothing like I use on my engines. its got big holes... and extra metal for no reason...
dragstews I still learn from you.

butche

 

[Crazy Cats]

I could be mistaken, but I believe the idea there is to increase the actual surface area so that more oil can condense on the gear cavity side before it passes into the breather cavity as a mist. One more trick to reduce oil out the breather.

 

[Guest]

what the hell kinda shovel cone is that??? or am i too drunk to see.... looks nothing like I use on my engines. its got big holes... and extra metal for no reason...
dragstews I still learn from you.

butche

Well.....

We are going back a few years when these was being made.....

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[gasketscraper]

So as not to start a new thread, and somewhat along the lines of the original post......and a Good Jesse ? What are the pros and cons of running the single caged pinion bearing (always thought it was an Evo only bearing) in a late Cone shovel vs. the original 2 piece loose bearing style?

 

[1fastfx]

Either one can be used,fitment procedures are diff for the one piece bearing.I prefer the cage style,bearings are located 180 degreese from each other allowing a more precise fit in my eyes.one piece has a tollorence for speced bearings to fall in.allows for a greater wear limit. S&S exclusivly uses one piece bearings in all their motors,cheeper to manufacture also.

 

[dan r]

first off i have not started the internals swap so not exactly sure what i have inside but have a 1970 alt motor with case damage, timing hole threads, motor mount breakage, primary lip broken so i picked up a 1981 case in good condition to swap out. i believe the earlier motors had a side oiling pinion shaft and later model has end oiling but if i use the early cam cover will i have troubles? i will double check the oil hole positions between the two cases as i believe there will be differences in the hole locations for the oil pump but as i mentioned i have not started the swap so old motor still in the bike. any other troubles anyone can think of before i open the can of worms? i realize the pinion bearing will need to be checked for fit and cam bearing replaced. i think the factory may have changed the thread size between the early and later model lifter bases also but unsure. this may end up being a winter project.

if your going to up date the cases, why not take advantage of the better/later oiling system? the 70 oil pump will not work on 81 cases, any 81-91 will. chances are everything needs a good lookie see with the crank pin, rods and rollers anyway. you will need to re fit the pinion rollers doing the swap at the least, might as well stick in a 73-80 pinion shaft and a 73-91 cam cover. cutting corners to save a few dollars will cost more in the long run.