Just curious, but what I've read so far, the engine archetechture is basicly shared between the 748/996 and the later testastretta versions ? (except for the head design and a couple other small changes?) I was wondering if you could swap in a later motor, i.e. an 848cc into a 748, and still use the fuel injection and engine management from the 748? Is there anything that has been changed that would prevent it? Ultimately, I would prefer to buy a crash bike and get the whole shebang. (maybe even upgrade to a 1098) Most people that part bikes out, almost never include any wiring or injection pieces with a motor, just wondering if you could make the new motor run with the old squirters and spark box? TIA...
The testastretta has different spacing between the throttle bodies. You could use the 748 or 996 throttle bodies if you made different bracketry/linkage or used individual cables to actuate them. The Testa also uses a different TPS so in order to use the 1.6 ECU you would have to make a bracket to mount the old style on the testastreta throttle bodies (If you opted to use the testa TB's)(or get 998 TB's and airbox)
I don't know about the 848/1098 I'm talking about a 749/999 engine here.
Several people have put 998 engines in, do a search.
The 748/916 are pretty much cross compatible. The 748 has a shorter stroke, thats why a lot of people prefer modifying it over the 996.
The 996 is its own beast, the heads have different stud spacing, so they don't fit on any other block but the 996. Though, the 748R and 996 share the same valve size.
The Desmoquattro's (above) all share the same throttle bodies, airbox and ECU to a certain extent.
The testastretta's (996R/998/998R/749/999) all share the same heads/casings with different porting, valve size and of course, bore/stroke. These motors are totally incompatible with the other versions.
The testastretta Evo (848/1098/1198) all share the same components, but are totally incompatible with the older version.
The killer setup is a 748R with 853 kit in it... If you do it right, its very revvy and so powerful.
The engine management is all very similar. You can easily hook up a system built for a testastretta onto a desmoquattro, just need to tune the ECU properly for the motor.
All desmoquattro engine will fit any 748/916/996 Frame (except maybe 996R).
Fitting a testastretta engine to a "non-R" 748/916/996 frame will give you some more stuff to do, like cutting into the frame because of the diffrence in crossframes.. It can be done ofcourse, several people have but it isnīt as straightforward as on the r-frames.
The Testastretta engines fit "bolt on" on all older R superbikes (748 and 996/998). We use a -04 999s engine in a -02 748R chassie as our Endurance race bike. Tom over at Hypertrick did the mapping, so we used the 999īs throttlebodies/TPS and so on with our existing 1.6m 748R ECU.
Tom didnīt think the 748īs throttles would be a good choice for a liter size engine and the size diffrence is HUGE.
Not sure about the Testastretta Evo engines like the 848/1098/1198, but my guess is that they will bolt right in aswell. And while using the 1.6m ecu would probably be possible i doubt that if using the 748s TBīs the engine would be able to perform as good as a stock 848.. The reason being that the throttlebodies on the 848 and particularly the bikker 109/1198 have larger diameters to be able to deliver enough air/ful to the engine.
//amullo
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1998 916SPS #526 - Fast by Hypertrick
Pitcrew for GLi Infideli Endurance Racing
I was toying with the idea of buying a crash bike 1098, and slipping the motor in there, I guess the radiator would maybe fit? It looks like you would have to hack on the front mount a little to get the injection to clear things? Also I know I would have to fab something for the airbox, but if you had a whole bike for parts, it seems like it would be doable? Fabbing an exhaust would also be a minor issue, but with a tig and a few pieces, that's not really a problem? The thing I'm not to sure about is the motor mount bolt sizes, maybe some more whittling would be required?...
I was toying with the idea of buying a crash bike 1098, and slipping the motor in there, I guess the radiator would maybe fit? It looks like you would have to hack on the front mount a little to get the injection to clear things? Also I know I would have to fab something for the airbox, but if you had a whole bike for parts, it seems like it would be doable? Fabbing an exhaust would also be a minor issue, but with a tig and a few pieces, that's not really a problem? The thing I'm not to sure about is the motor mount bolt sizes, maybe some more whittling would be required?...
i dont know about the 1098 in the 748 chassis but its pretty simple to do the 999 into a 748, if my 999 grenades im gonna try the swap you have mentioned, ive already molded one custom airbox , i wouldnt think twice to do it again. i cut my cross bar out of mine for my airbox and welded in a single slant bar, honestly if you can fabricate and enjoy doing it go for it.
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2000 748 biposto
Ducati MacGyver
transplant complete! if she only had a brain...
engine swaps...
Linear Mode
