View Full Version : speaking of engine swapping...

08-09-2007, 09:37 PM
So, it seems like all duc motors (speaking of 4 valve) seem to be roughly the same size.

is it me , or am I smoking crack... it seems like you could swap motors fairly easily?

like a 1098 motor ;) into a 916 body? or the other way around. thoughts?

08-09-2007, 09:55 PM
I think 1098 is a taller engine. The top end is new and that's where the difference may be...(bore strokes are different)

08-10-2007, 04:56 AM
There's a pretty big difference in the bottom end, as well, testastretta vs. non-testa. The non is a deep sump motor, and the testa is a non-deep sump, and it looks (at least in the pictures in my desmo times manual) like the bottom of the motor where the drain plug is shaped very differently at the least. Question being if it would fit, shapewise, not just size wise. It would suck if you bought one to find out the cylinder heads in the 1098 motor were 3mm wider than the inside frame dimensions in your 916....

08-10-2007, 05:50 AM
I dont have any bike/motor to do this with. I'm just curious. But what about other swaps outside of a 1098/916

08-10-2007, 08:24 AM
You might be able to swap 748/916/996's; or 749/998/999's. (although not too familiar with the size of 998's.)

749/998/999/1098's are all testas, but 1098 is a different size..

08-10-2007, 09:20 AM
Here's a really cool engine swap: take a 748 monoposto with a blown engine and swap in a fresh 1000ds -- the poor man's Imola.

08-10-2007, 11:25 PM
There was a 916 chassis and bodywork running today at PIR - with a 1000DS MTS engine implanted. From the grins on all the riders that took it out it looked like a lot of fun. Very light and nimble without all the extra watercooling weight.

Dave R
08-10-2007, 11:49 PM
and the MTS swingarm is a believe 20mm longer than 748/9** series AND fits the DS cases unlike a 748/9** arm. This is the package I would like to some day assemble for myself : ) a poor man's Milona :bowdown: