I actually just did a swap on my 1984 Bagger. I had the old school style starter and such and kept eating bendix gears. The transmission cases should be the same. I got an 89 transmission case from a buddy of mine and swapped in transmission gears that were out of an early twin cam. I believe all the way up to 2006 transmission internals will bolt right in to the 89 and newer case. I also ran a 1993-1998 Inner Primary. One of the holes had to be threaded then everything bolted right up. I went with the 1993 and up inner primary because it opened me to a wider variety of outer primaries and seemed to be quite a bit cheaper than trying to find the older stuff. Then for the clutch, I got an assembly that was from an early twin cam. you can run either an evo or a early twin cam clutch basket. You will also have to run a different starter than you currently have. In my opinion, it was one of the best upgrades I have done to that bike for reliability. If you do some shopping around you can find the parts fairly reasonably.

 

bringing up a older thread of mine as I found a complete 91 or 92 fxr primary...has the inner/outer covers, complete primo pro clutch, compensator sprocket, chain, pushrod, etc....u can see it all in the pic....


my next purchase is gonna be a 6spd gear set(since id have to tear into it anyway)....will a primo or ultima softail 6spd builders kit work? since they are usually marketed toward softails?


and besides the whats in the pic....and the builders kit....will I need a new starter to complete the swap? anything else parts wise?
id hate to have to buy a 91-up fxr parts and service manual just to do this, but I might....I have both for the 88....

 

They still have them on their website.



http://www.delkron-mfg.com/products/...=TransCasesFXR

 

The website is basically dead and should be considered reference material. I asked about Delkron on another forum with a good FXR section.

I really don't get why links to other forums are banned here because motorcycle forums don't threaten each others revenue streams (tabbed browsing is a thing and people browse more than one website) but I'll just quote the post by Turboprop (a well regarded contributor) and let anyone who cares Google it.

My nick is casement. His response in bold:

He doesn't address the inner primary because he's into TC swaps, but that was IMO more important than trans cases. You can easily use a bagger transmission. I did and ditching the silly oil tank while upgrading my starter was a nice bonus. No more wet sumping and much more room under the seat for maintenance access or an enlarged battery box.

RIP Delkron. Evos are old and, like Shovelheads and earlier, aftermarket support will gradually fade to Taiwan replacement parts as the years go by. Hoard what you can. I will. Elvis is no fool.

 

The 6 Speed builder kits should work in the transmission case. To run that primary I believe that you will have to buy an 89-up transmission case for an FXR. and you will also need a newer Starter as i believe your 88 has the old shovelhead style starter. If my memory serves me right 89 they went to a different starter and then in 90 or 91 the changed the clutch basket from a taper shafted press on unit to a splined shaft on the transmission.

 

You need the later case and starter, but the later starter is a great reason to upgrade. BTW the vast majority of used stock Denso starters just need a solenoid rebuild and contact kits are cheap and easy to install. It's not worth it for a shop to fix Denso 'noids and risk customer comebacks from other causes because hourly rates are so high, but I'll do them for myself without hesitation. You can find "Denso starter" rebuild videos on Youtube as they are used on so many vehicles.

You can sometimes find the FXR-compatible (non integral oil tank) later bagger transmissions complete, but I didn't want one. They'd cost less than a case. Cases are out there. Check Ebay, FXR Facebook groups, etc. Also check Craigslist for people parting out baggers.

I bought every FXR book I could get my hands on. Totally worth it and used is fine. Ebay is my friend. Harley manuals and parts catalogs are wonderful educational tools. If you are low on money Ronnie's HD has online parts breakdowns, but I gave up trying to get around owning tech data long ago.

The All ***** single piece jack shaft is a nice upgrade and simplifies future maintenance including starter removal and installation. A pair of long forceps is useful for maneuvering jackshaft snap rings.

 

for what its worth I just installed the Baker OD6 in my fxr. stock gearing. for me, it was a waste of money. But I have a S&S 111" motor so it may be different for an 80" motor.

 

Everyone should figure out the gearing for their use case including final drive. I prefer taller final drive ratios even on stock engines with only carb/cam/exhaust mods, but I'm not a racer and don't spend much time in traffic.

 

I just did a upgrade also on a 88 FXR, I went with late 90s FL parts, including the engine. I used both the inner and outer Road King primary. On the inner primary I milled off the the shifter boss and also bored a hole for the shifter cross shaft through the case for mid controls. The pad for the cross shaft was cast into the stronger FL inner, it only needed to be bored to size. The cost of the machine work and both covers was less than any FXR parts I could find by about 60%. I went with a new Delkron trans case. Baker 5 speed gears. I used all the R King parts inside the primary , compensator ( better cruiser gearing) Clutch basket. chain. etc. It's a very straight forward bolt in swap with much better gearing for 70 mph cruising