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My 8 HOLE inner, has the x-30-00085 number, not the -80, and is not drilled for the primary chain adjuster, so had been used as a belt drive inner on some bike,, as it has no chain adjuster attachment bolt holes drilled in it. Odd.
Is that -80 a casting number, or a parts number?
I just checked my Sturgis Parts Catalog and there are no X-000- parts numbers for any part of the bike and the inner primary is supposed to have a 25496-80 parts number, so I suspect that this is a casting number??
X used to mean experimental
Could my bike be that early a bike, that they used a one of the original prototype leftover run of inner primary covers?
Since they dropped the primary belt drive in '83 at the latest, and went to the primary chain on the 83,84 and 85 FXSB, this inner primary must be original to the bike, or another primary belt drive application, as it could not be used with a primary chain without the chain adjuster drilled and installed.
Mystery.
My Bike is also an early 1980 with the 11 digit VIN..Must have been built in late '79.
This Sturgis has the longer trans mainshaft to make room for the rear belt drive...still has the rear drive pulley on it.
The 83,84 and 85 4 speed trans do not list a different or longer mainshaft than the taper shaft Sturgis to accomodate the rear belt drive,, so I suspect that the '80 Sturgis mainshaft will accept the 83-up primary chain drive, and maybe even the early EVO wet clutch if the 4 speed clutch release mechanism will work
I just received my 78 1/2-84 FL/FX Service manual...had the 78-80 version already.
I ordered the 99455-83 c parts catalog for 71-84 FX and the 99456-84B 41-84 FL parts catalog. All parts interchange mysteries should clear up soon.
Engine is free, but I will pull it down, as it has sat for some time. Stuck rings are expected as oil behind rings turns to glue after sitting
I am not sure why the bike was partially disassembled, but I let it sit inside as garage art until now.
not sure what the diff is between the X30 and 60497-80b - but the 60497 is set up for chain primary - I looked at the X30 blank - guess you can drill it but I would not without a blueprint
My 8 HOLE inner, has the x-30-00085 number, not the -80, and is not drilled for the primary chain adjuster, so had been used as a belt drive inner on some bike,, as it has no chain adjuster attachment bolt holes drilled in it. Odd.
Is that -80 a casting number, or a parts number?
I just checked my Sturgis Parts Catalog and there are no X-000- parts numbers for any part of the bike and the inner primary is supposed to have a 25496-80 parts number, so I suspect that this is a casting number??
X used to mean experimental
Could my bike be that early a bike, that they used a one of the original prototype leftover run of inner primary covers?
Since they dropped the primary belt drive in '83 at the latest, and went to the primary chain on the 83,84 and 85 FXSB, this inner primary must be original to the bike, or another primary belt drive application, as it could not be used with a primary chain without the chain adjuster drilled and installed.
Mystery.
My Bike is also an early 1980 with the 11 digit VIN..Must have been built in late '79.
This Sturgis has the longer trans mainshaft to make room for the rear belt drive...still has the rear drive pulley on it.
The 83,84 and 85 4 speed trans do not list a different or longer mainshaft than the taper shaft Sturgis to accomodate the rear belt drive,, so I suspect that the '80 Sturgis mainshaft will accept the 83-up primary chain drive, and maybe even the early EVO wet clutch if the 4 speed clutch release mechanism will work
This is an 8 hole primary cover.
I will find out soon. I love this stuff.
just to try to clarify i think your possibly mistaken, all models 1980 to E84 used the same Transmission Mainshaft regardless if it was Chain or Belt Drive , the longer Transmission Main Shaft was used because the L84 to 86 Diaphragm Spring Clutch Basket , heres a picture for comparison , the top is the 70-E84 & the bottom is the L84-86
as you can see the length of the Transmission Main Shaft is after the taper for the Clutch Hub . . .
It is hard to find info for 40 year old bikes...a lot of old guys have passed on. Hell, I am 73.
I always considered Shovels to be the new stuff ,and never owned one. I went right to Twin cams.
So the longer trans shaft was for the later EVO/shovel wet clutch.
I had assumed that that offset for the rear belt drive--about 1" recess in the inner primary cover's back side, caused the inner primary cover to be made wider, along with a longer matching main shaft trans.
Thanks for the input!
Regarding drilling the inner primary--- I have a pattern to follow, and the cover's recess does not allow for much variation in location. vertically or horizontally. I will get a complete adjuster assembly before firing up the mill.
the "off set" or "recess" in the back side of the inner primary is to accommodate the wider Transmission Belt Pulley & Belt . . .
heres a shot of the inner "Belt" Drive Primary, . . . notice that this one is for a L.84-86 Wide Glide as it has no hole for the mid controls Shifter Shaft, but dose have the Chain Adjuster & it is also a 9 hole Primary
its ben questioned earlier in this thread as to why you want to convert to Chain Primary Drive , i think its not a bad idea because the rubber bushings used in the front Pulley of the OEM Pulley are long obsolete & are now hard or impossible to find NOS , so for a bike that will see a lot of miles a Chain Drive Primary might be a better alternative ,
i was also thinking before you drill your Primary for the Chain adjuster, you might be better off finding the right inner Primary because i don't think you'll be able to make your Sturgis Primary oil tight , the opening in the front of the inner Primary is oval shaped to allow for Belt tension adjustment & dose note have the lip for an O ring Seal between the inner Primary & the Motor Case
Last edited by troy montoya; Aug 2, 2021 at 05:22 PM.
I will look for a set of correct primary covers for a mid shift FXSB, but searches so far indicate that no after market primary is yet being mfg, and not enough rear belt shovels have been disassembled for parts.
So
I checked out my inner primary cover, and lo and behold, it does have the recess/groove for the o ring between inner primary cover and engine...that issue is solved.
The oval, mid shift shaft plate, does have an extra 1/2 " diameter hole in it, for the shifter footpeg, besides the 4 screw holes and shifter shaft hole.
Outer primary covers seem to be available for 84 FXSB . I will need one of those.
Interestingly enough, my outer screened primary cover, is a 9 bolt, unlike the 8 bolt inner, and the 9th bolt hole is blocked with filler.
It also has an ink stamp inside it, " 86-6-18". May be an aftermarket, screened outer primary cover after all. I am not confident enough to attempt to make plates to seal up 3 large screened areas.
I cannot quite make out the number of the inner primary cover you posted.
Is it 30-97-80B?
My Sturgis inner primary cover will have to do, with drilling for the primary chain adjuster assembly. It is set up for mid shift already. No others have appeared yet set up for mid shift.
Catalog Inner primaries are:60502-80A for FXB and FXSB, and 60502-84 for early FXSB..meaning '80 Sturgis with mods will work on FXSB..
for Outer Primary cover is either an original 80 Sturgis without screen holes--- 60488-80, or a 60531-83B for 83-84 FXSB/WG
Compensator sprocket assembly is 40275-83 -----83-84 FXSB/WG Is the new, shorter comp assembly
Clutch shell is 37707-82 ......fits early FXSB and WG, is pre wet clutch
Primary chain is normal 82 link
Starter set up is same as 80 Sturgis
Chain adjuster assb is same as all primary chain adj assemblies.
Let me know is this is correct or missing something.
Thanks for all the input so far.
Outer primary cover should be 60498-80 and I have NEVER seen one, not even on jw boon. All 3 of mine have 60606-77 and I just milled them down to accommodate the 9063 bearing
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