696 Engine modifications

Started by Raux, September 07, 2009, 11:50:51 AM

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Raux

here's what ducati kaemna said for pricing in euros

lightweight flywheel exchange   approx 100,-
porting/polishing   approx 680,- complete with new valve guides and new valve adjustment ready to install
mounting valves with cutting the current seats  included
crank lightening/balance   lightening and balance up from 448,-
piston cutting for larger valves and to keep compression ratio below 12:1  depends on how much work it is ,
approx 110,- max i think .

soooo i may have to cut back.. that's almost 2k dollars of engine work. i wasn't planning on more than 1k
may just got with the flywheel, crank balance and if needed piston work (waiting on parts list for HM 796 to see what they did for the change)
1k alone for valve work is too much.

Raux

went with the lightweight flywheel from the ducshop. 84 vs 130 dollars for Kaemna's work!

and i am picking up a pair of spare 696 heads to try my hand at polishing the ports myself. i know i won't be able to do major port work or do the work for the larger valves in unless i can find a local shop that can 3angle for cheap.

i'll probably have to send the pistons still to them for the cutting to work with 66mm crank. and leave room for the 45/40 valves if i can find another shop to do the work or find out how much they would charge just for the valve seat work.

stopintime

Maybe you already read this, but a press release says the 796 is a 803cc 88 x 66 comp 11:1  lighter cases ....
It has a new crankshaft and a 848-type lightened flywheel
252,000 km/seventeen years - loving it

Raux

#33
didn't read that but it's not unexpected.

the 11:1 ratio is new though. the stock M800 compression was 10.5 so apparently either the pistons are completely new or the old rods are smaller.

really need to take a look at the parts catalog when it comes out so i can check the rod and piston part numbers compared to other bikes.

Duck-Stew

Ducati's really good about putting the parts catalogs up in November so you may not have to wait that long man...
Bike-less Portuguese immigrant enjoying life.

Raux

Was told by a great Ducati engine builder that the valves aren't a good idea so I am not goint to go to 45/40 valves. just going to polish the heads myself (pray for me)

cokey

I WIN
Quote from: my wifeOk babe I surrender to u.  U may work me out till I drop

Quote from: Timmy Tucker on February 27, 2011, 11:11:58 AM
About the goat...
His name was Bob, but the family called him BeelzeBob. 
make the beast with two backs goats.

Raux

Quote from: cokey on October 14, 2009, 05:41:43 AM
Did he give a reason?
the bigger valves don't work well. good enough for me.

cokey

I WIN
Quote from: my wifeOk babe I surrender to u.  U may work me out till I drop

Quote from: Timmy Tucker on February 27, 2011, 11:11:58 AM
About the goat...
His name was Bob, but the family called him BeelzeBob. 
make the beast with two backs goats.

Raux

basically the valves get too close to the cylinder walls the airflow isn't so good.

Raux

#40
This is the projected build.

803cc,
88mm x 66mm
port/polished 40/38 valvetrain.
Custom undertail exhaust 2-into-2
BMC Airfilter
lightened flywheel
possibly an 848 clutch
DP ECU
PC V (if it ever comes out for the 696)
Magnesium alternator cover
Magnesium Clutch cover
Custom AL or CF airbox with more volume and 916 intake funnels
Electreaon quick throttle cam

EDIT: forgot the DS1000 cams that are coming too!

stopintime

http://www.motowheels.com/italian/myproducts.cfm?parentcategoryid=1054%7CMonster%20Engine%20%26%20Performance&productID=6784&showDetail=1&categoryID=1079|MON%20Engine%20Fuel%20%26%20Air&vendoridtodisplay=0&filterFor=&collection=168%7CEuropean%20Motorcycle%20Parts

I like your project - you're crazy, but I like it [thumbsup]
252,000 km/seventeen years - loving it

Raux

#42
yeah you can preorder it, but Dynojet hasn't released it yet, checked their website.

my target is to make as much HP as the 1100  :o

caperix

What about a nemesis it has alot more tuning options then the pc.  It is a Mirelli product though so they may not make in plug and play for the semens equiped 696.

Raux

#44
Quote from: caperix on October 21, 2009, 02:39:24 PM
What about a nemesis it has alot more tuning options then the pc.  It is a Mirelli product though so they may not make in plug and play for the semens equiped 696.

aren't the nemesis like a grand AND A HALF or more

i think the DP ECU with the PC V and maybe the Autotune.
also a speed sensor and temp sensor will allow for more adjustment. say increasing or decreasing on cold starts, or setting it up for in town 20% throttle and low speed riding with better fuel economy.
seems pretty flexible.