Ducati Monster Forum

ok, i have an m796, and i acquired some hypermotard 1100 cams(older not evo) and i started to tear into my engine, scary right?

i have 7200 miles on it, so its just about due for the 7500 valve check anyways, so i figured, might as well swap the cams and do the valve adjust anyways.. whats 2 extra bolts and nuts anyways?

start by removing tank and timing belt covers
(http://sphotos.xx.fbcdn.net/hphotos-ash3/575165_4067733251239_1412393277_n.jpg)

then set the cams to tdc via timing mark
(http://sphotos.xx.fbcdn.net/hphotos-ash3/165991_4067798252864_1633634956_n.jpg)

i broke my socket i made to get these castle nuts off, so i ended up drilling them out and using a chisel and hammer to knock off the nuts, pretty much destroying them in the process, i have new nuts so thats fine
(http://sphotos.xx.fbcdn.net/hphotos-snc7/577679_4067779332391_1958149849_n.jpg)

this nut cracked in half when i used my chisel, they were on there GOOD(crappy cell phone pic)
(http://sphotos.xx.fbcdn.net/hphotos-ash3/556190_4067795212788_1444185316_n.jpg)

heres what it looks like without the nut
(http://sphotos.xx.fbcdn.net/hphotos-ash3/575677_4067967297090_797600760_n.jpg)

"new to me" cam on left, stock on the right, looks like its got a little longer duration and more overlap, so more power!!!!
(http://sphotos.xx.fbcdn.net/hphotos-snc6/182195_4067862414468_1242259358_n.jpg)

im calling it a night with the vertical head pretty much done, ill tackle the horizontal cam tomorrow

those nuts were one time use anyway

its very hard to tell and prob silly to call from here, but it looks like the cam on the right has more lift.... can u confirm which of the two cams is the 1100 cam, and maybe a better picture?

i verified the grind id and it is from a hypermotard 1100, the cam on the right is the stock 796 cam i just pulled out of my engine

true, it is hard to call from those pics.  1100 cam my actually be milder since the bigger motor doesnt like to rev so much....


 [popcorn]

well i can tell that it has a longer duration for sure

IIRC: lift is the same across the new air-cooled motor stock cams, 696 & 796 make due w/less duration.

yea but a longer duration could make more power when fueled correctly

for reference my bike stock pulled 75hp to the wheel

does the 1100 also have larger valves? another reason for a possible milder lift cam being used in std form.

if its the same lift and longer duration as the op and duck-stew thinks, it could make a nice improvement with some extra fuel. all depends on the heads then i suppose.

im told the heads are identical ;D

heads are identical, valves are not..

1100 are using larger valves. and the heads aren't exactly identical.
cams are just using longer duration/overlap

lets see if my table works

CAM   I O    I C   E O   E C   IN DUR   EXH DUR   IN C/L   EXH C/L   LOBE SEP O'LAP   IN LIFT   EXH LIFT
696/796   18   60   53   23   258   256   111   105   108   41   11.2   10.8
1000   15   65   62   19   260   261   115   111.5   113   34   11.2   10.8
EVO   14   73   66   25   267   271   119.5   110.5   115   39   11.8   11.2

so the 1100 has a little more duration, same lift and wider lobe seperation (less overlap). might hurt the middle a little a bit.

Why not start by porting the head for better flow/power?

where did you get this info?

Its Mr. Black, our in house father of tuning knowledge.  Click his sig, I am sure Brad measured and confirmed those numbers for the cam profiles himself.

got everything wrapped up, and i spun the motor a few times to make sure the timing marks lined up and that nothing was hitting

double checked to make sure i wasnt leaking fuel out of the quick connects
started it up and it idled fine, no check engine light or anything, no weird noises, rode it down to the gas station to fill it up and surprisingly on the stock tune no less, it felt a lot smoother down low than it normally did

anyhoo, took it out on the freeway to wind it up a little, and it feels like it starts to really pull at 7500 and i think the power peaks close to 8k

if you have the means, i would HIGHLY recommend putting in 1100ds cams in the 796 motor, i need to dyno tune it and adjust the map, but it feels quicker at the high rpm range, i would really love to see what it does on the dyno

info from manuals

what are the id numbers on the ends of the cams?

I would be reluctant to install stock cams from the big capacity lower revving motor into the smaller rev happy motors.  Just seems like a mis-match to me. 

But unlike the OP I have no first hand experience.

grind id's are O7C and V7C

but the main thing is that the cams keep the valves open longer than the stockers, which allows for more air and fuel to flow in

and i was pleasantly surprised that it ran on the stock ecu just fine, im sure its not 100% but its good enough to ride and its actually pretty zippy at higher rpm, that being said, i really do need to get some dyno time to get actual number to support this theory, but it is a lot smoother than it was before

is that the 796 or 1100?

I think that's the first time i've seen someone question Brad..... :o

the cams came out of a hypermotard 1100s, not an evo, the evo has a different grind id

not that im questioning him, i just was trying to look for that data before

so o/v7c is the 1100 cam?

what's on the 796 cams?

the 796 cams are O/V8P

about 200 miles now, and it feels a little quicker than it did before, the front just about power wheelies in 1st gear, i cant wait to get this thing tuned! i need a new tire first

I'm running 1100 cams ergal rollers and flywheel. thing apins like a top gettin into the powerband.  fricking love it. 

a good tune and pretty certain ill be able to power the front in stock 1st