Picked this up today. Comes from an S4RS, 4500 miles on it, DP slipper clutch. Going to put it in my 749. Has anyone done this conversion themselves? If I take the 749 lump out and document it, then do the reverse, is that it? Will it be easy for a logically thinking non mechanic ( that's me )?
The engine swap should be quite straightforward enough, it really depends on how good your mechanical skills are and your range of tools. Do you have the injectors and the ECU? if so that would make the job easier. I am not sure of the injector size on a 749 it may be the same as the 999 but the ECU I would say would be set up differently but you can always get it mapped for your new engine and it will be perfect. Cheaper option is to use the 999 ECU though as no remapping would (should) be required.
My mechanical skills are ok, if i have a guide. I'll try anyting. The tools thing may be a stumbling block though. I have the regular stuff, is there anything special needed? Was going to get ChrisW to flash one of my spare ecu's to the 999 termi map.
The engine swap should be quite straightforward enough, it really depends on how good your mechanical skills are and your range of tools. Do you have the injectors and the ECU? if so that would make the job easier. I am not sure of the injector size on a 749 it may be the same as the 999 but the ECU I would say would be set up differently but you can always get it mapped for your new engine and it will be perfect. Cheaper option is to use the 999 ECU though as no remapping would I am not so sure with the 749/999, you may need a 15mm socket for some of the bolt heads and maybe someone could advise what tools you need to remove the swinging arm bolt as you need a large allen key headed socket on one side for the 748 series bikes, again 15mm if I remember correctly, I used a sump key socket for that. Beyond that it should be quite straightforward and anything you did need you could no doubt get from somewhere like Halfords so you shouldn't be stuck and needing specialist tools. A decent torque wrench would be useful.
That engine will fit but the 749 swing arm won't, as the cases are fitted with bearings and are too wide for the 749 arm.
From Ducati Up North, I am not sure if they are exactly the same as yours as this seems to refer to the ST2 but it might help you to check out how your bearings are seated. swinging arm bearing removal Hi everybody seen a few threads on web asking how to remove the swinging arm bearings from the crankcases on ducs. Heres how i do it. after swing arm and all other stuff thats in your way to do the job is removed. 1. pick out the outer seal with a hook ended scriber. 2. use a heat gun to heat crankcase area around bearing {20 mins} 3. use an internal bearing puller and slide hammer to pull out the inner race of bearings {one at a time, outer then inner} 4. then get a suitable drift { an old swinging arm pivot pin is ideal}and use it to punch the circlip and inner seal in to the crankcase well. 5. apply some more heat. 6. get a socket that has the same diameter as bearing outer race and extension bar and drift the bearing shells in to the crankcase well. 7. take your old pivot pin and mash the bearing shells in the crankcase well. 8. use a set of long nose pliers and magnetic pen to remove the debris. and thats the hard work done . I will assume, that if you are tackling this, you wont need me to explain how to insert new bearings Okay its a bit brutal but it works and only needs done once in bikes life if you clean and grease them regular.
The engine cases are too wide at the back on the s4rs engine, so the 749 arm wont fit. The Monster arm is wider on the inside, where they go either side of the cases. It makes no difference that the bearings are taken out of the cases. :Banghead::Banghead::Banghead: You cannot use a monster arm on the 749 frame and s4rs engine as the shock mounting alignment is out.
I am not too sure of the material build up around the bearing area but an option would be to machine the cases down to the correct width. Taking in mind that the correct offset of the width of the cases for chain alignment. Or you could build the engine into a set of 749/999 cases.
Not really mate, if I'm honest I haven't given it much thought yet. What would you do? I'm wondering if putting the innards into my 749 casing is the easier option?
I agree, sell it, much easier and cheaper overall. Parts prices including gaskets can mount up. It cost me £900 in parts to build my 748R engine, it did include mains and big end bearings admittedly.
Have been busy of late but am gearing myself up to do this conversion, finally. Would the best option be remove the 749 engine, sand all the flaking paint from it and powdercoat (is that the best for heat?) the engine cases then put the S4rs engine into the newly painted cases? The bearing removal then FE's statement about it still won't fit does scare me.
