I have read into this a lot and can't seem to get a straight answer and sorry if it's in this forum I tryed looking

So here's the deal I have a 2000 flhrci road king 88ci motor and trans stock as far as I know and I want to upgrade. I found a custom hard tail with the S&S 113 CI Sidewinder stroker*crate motor (evo style ). Baker 6 Speed transmission complete with Baker Case not a drop in
BDL 3" belt drive w/joker machine cover runs amd drives great now I really only want the motor and trans out of it and want to swap it. Can this swap be done both bikes are turn key and go I just want to swap I understand that there's gonna be some t weeking going from efi to carb but I can handle all that I just want to make sure there's a way to make it lot up with out hacking my frame apart is there a adaptor for a evo and trans to go into my frame please help asap. TIA

 

for one, the evo motor is taller than the TC...and a stroker evo would be taller yet


the evo tranny doesn;t bolt to the motor like the twincam to give a good solid 4 point mount

the touring tranny case essentially supports the swingarm...

so you need a tranny case that'll work in the touring frame.

the tranny is connected to the motor by the primary case and you'd need a carlini torque arm /race brace to support the rt side or the primary case would break.

and and and

IF you REALLY want to do this- you do best to mod your frame- raise the backbone and weld in mounts for the F&R of the motor and tranny so that the drivetrain is solid mounted like a softail or a panhead.

you'd also need a short primary like the rubbermounts- the softails use a longer primary case- which may be used on your donor bike

mike

 

Thanks for the reply I'm thinking that this might be a bigger project than I thought it would. I got around 7k to build my bike so I figured I could do the swap and have 2 bikes I think I might be better off just building the motor I already have. I'll talk to some more local shops and see what it would cost me to do the swap and go from there thanks

 

depends what you want- what I would do is sell the RK and use that cash and the $7K to get a late model.

if you are ok with the old chassis and the brakes...then get a big motor to drop in, S&S makes twin cam motors that'll drop in
you can get a displacement and cams that'll move the 900 pound bike ( for this you want bore, not stroke for more torque)
other make motors or you could have yours built to 100+ horsepower...but then you will have to upgrade the clutch, tranny, etc etc. ( your stock 88 is about 56 HP)

bigger/ more power = less reliable, less mpg

it's really up to you.

or you could have a smooth touring ride and a raging bar-hopper, just by leaving those 2 bikes as-is

mike

 

If that custom bike has a separate oil tank you are not going to make the engine/trans fit your bike readily. Too many problems as I see it! I don't agree with Mike, having owned and enjoyed a stroker engine, however he is quite right that you should consider a proper bolt-in twincam replacement engine if you want an upgrade. As a fan of S&S products I have one of their 107" in my Evo, they make a 111" and 124" that will bolt right into your bike. I passed on their 113" as it seemed to me it was built for light bikes, not a touring bike.

 

Thanks everyone saved me form a lot of trouble I passed in buying the custom. I'm either just going to build my motor and trans clutch or buy a direct bolt up. Now to figure out how I want to go about it for the $money $ I have so many different options this forum is really helpful I'm new to it.

Thanks again

 

You'll find we're happy to help you spend your money, if you need any advice........

 

Hey GR !,
I base that on conversations with S&S...some years ago, I found a stinkin' deal on a 113 Sidewinder.

They suggested not a good match for the 95 bagger- with the bore/stroke, HP/torque characteristics vs weight and gearing.

They suggested a 107 for the bagger.


always good to discuss pros/cons


Mike

 

Mike,

I built an 89" stroker out of my Evo Glide, thanks to the serious work being done by a local indy. That motor was fine! When deciding I would like even more performance I looked into S&S engines and was advised against their 113". Unfortunately I was also advised against the 124", which is what I really wanted! The 107" I eventually bought has been succeeded by a 111", which is square, same bore and stroke. I see S&S now make a low CR version with the same 585 cams that I have in my 107, now that would be very interesting......