Don't think I've posted my latest info on my favorite forum yet, due to the gremlins with the new site.
But finally, my SP3 project took a big step: she was ready for the dyno!
Just a recap of what I've done to her (probably forgot some stuff):
851SP3 with 95 mm bore (so 907cc)
748R heads, cams and valves (36/30 valves), inlet and exhaust ports optimized by Biggelaar
Machined 95mm JE High Compression pistons - enlarged valve pockets, shimmed 1.3mm of the top of the piston deck to reduce the pocket depth
Machined 1.2 mm of the cylinders to get 0.85 mm squish. CR measured at 12.25:1
S4 crankcases
Carrillo conrods
IW31 injectors (4)
Raised fuel pressure 3.7 bar
Cam timing 748R advanced 3 degrees both inlet and exhaust (so 107 centerline inlet, 105 centerline exhaust)
50 mm tangential sil moto exhaust with termignoni cans
OEM airbox (no lid) with K&N airfilter
Had her on the dyno at Biggelaar, a reputable ducati specialist here in the Netherlands.
Pleasantly surprised with the outcome, especially with the torque curve. Not the revy monster I was expecting but a very nice fat curve. Remarkably similar to the previous tune with the G inlet and A exhaust cams and 33/29 mm valves! Same shape, just a lot more of that torque! Probably the spaghetti exhaust and the OEM airbox?
Anyway, se if I can attach some pics.
