Evo Frame Swap Fitment Questions

[PutALittleHeatOnIt]

Hey guys,
So I have a '98 FXD that I picked up cheap. Was hoping to swap the motor over into a hardtail frame this winter.
I can see that with the oil pan underneath the transmission, it won't be able to bolt up to anything with a mounting plate. My three biggest questions are-
1. Will a softail transmission be compatible with the motor? Hoping to do a 5 speed with electric and possibly kick start
2. Will I need a new inner primary, and if so, will I need a new clutch hub, comp sprocket, etc?
3. Is it possible to plumb oil lines from an external tank instead of the pan underneath the factory transmission?

Thanks guys!

[JBinNC]

Evo motors are all the same in respect to the motor mounts, inner primary face on the case, and output (sprocket) shaft. The oil pump covers vary, because the oil line hookups are slightly different, but that is easy to work around.

Yes, you will need a new inner primary to match a Softail transmission. You can use your existing clutch, compensator, primary chain, and chain shoe assembly. You will have to adjust the spacing of everything outboard of the alternator rotor, but that is also easily done. Your Dyna outer primary cover will fit the Softail inner primary.

You could even swap the transmission internals from the Dyna to a Softail transmission case if you need to.

It's an easy swap all around, go for it.

Jim

[Dragstews]

You may run into a problem with the Evo motor being too tall for fitting into a standard hardtail frame ..
They are about an inch taller than a Pan/Shovel motor ...

[PutALittleHeatOnIt]

Thanks to both you guys for the solid advice.

JB, when you talk about spacing outboard of the rotor, is that something that could be accomplished with a set of shims? Or do you mean I would need a longer primary chain?

Thanks for the heads up Dragstews, may end up raising the neck a bit to accommodate that motor then

[JBinNC]

The compensator spacing is accomplished with shims. There are instructions included with H-D replacement alternator rotors that detail the differences. Primary chain is the same, as I already stated.
Almost ANY aftermarket rigid frame made since the mid-'80s will fit an evo motor. The H-D rigid pan frames will not allow for an evo motor, and are way too valuable to cut up for the purpose, in my opinion.

Jim

[docmel]

The compensator spacing is accomplished with shims. There are instructions included with H-D replacement alternator rotors that detail the differences. Primary chain is the same, as I already stated.
Almost ANY aftermarket rigid frame made since the mid-'80s will fit an evo motor. The H-D rigid pan frames will not allow for an evo motor, and are way too valuable to cut up for the purpose, in my opinion.

Jim

Did a Evo engine in a aftermarket rigid frame for a shovel: Rear rockers hit the gvframe Just grinded a little on the frame, no big deal:

[Dragstews]

Thanks for the heads up Dragstews, may end up raising the neck a bit to accommodate that motor then

It will need the seat post raised ..

If needed I can supply you with a "Edlund" frame that looks just like a stock frame from the 48 to 57 era that has the needed height for Evo motors ...



Would be Plug & Play deal ...

[PutALittleHeatOnIt]

Really appreciate it Dragstews, definitely interested in the frame but would have to wait a bit for some funds to roll in first

[PutALittleHeatOnIt]

Thank you for your help JB and docmel

[Dragstews]

Really appreciate it Dragstews, definitely interested in the frame but would have to wait a bit for some funds to roll in first

Do you play Lotto ... ??
.. Might get lucky ..

A special order frame would cost near 3 grand ..

[PutALittleHeatOnIt]

Working on sending a private message! Just can't get the site to work properly, maybe user error as well

[Dragstews]

Ya might try "Putting A Little Heat On It" to get it to work ...

[c4l4f]

Trans swap

So I’ve got 94 dyna trans I can swap the internals over into a softail case without issue

[JBinNC]

So I’ve got 94 dyna trans I can swap the internals over into a softail case without issue

Yes.

Jim