[gomura]

not true...if you really want it.

I dyno'd mine last week. '99 750SS 80.3 rwhp that's better than a stock 900 SS

Cool! But what did you do and most importantly, what did it cost?

 

[blade625CT]

Cool! But what did you do and most importantly, what did it cost?

I throw all my cash receipts away. That way, if I get killed riding, my wife won't discover what I've spent and piss on my grave

But...I've spent a bit. I'll let you guess.

these get the HP:
795 kit w/13:1 pistons
head porting and 900 cams [Bruce Meyers]
full exhaust
flashed ECU [Bruce Meyers]

these don't add to HP, but are nice [motor spins up faster, package handles better etc.]:
lightened flywheel [again, by Bruce]
dry slipper clutch [all aluminum components]
lightened and balanced crank [Ben fox]
carrillo rods
6 speed from '03 monster
swingarm off '95 SP
TiNi forks off 998
fork valving and rear Penske by NC Rick [you rule Rick]
forged wheels [NC Rick]


I could go on...but I'm sure you can see already that I am a complete lunatic.

 

[JDuc]

correct, but at what cost?

if you had done those same mods to a 900, you would still have more power...

 

[blade625CT]

correct, but at what cost?

if you had done those same mods to a 900, you would still have more power...

But, a 900 wouldn't fit into Ultralightweight Superbike. I built it with the sole purpose of competing in that class.

at some point, I'm sure I'll get around to building one of them [large case motor] too.

 

[DesmoEd]

I throw all my cash receipts away. That way, if I get killed riding, my wife won't discover what I've spent and piss on my grave

But...I've spent a bit. I'll let you guess.

these get the HP:
795 kit w/13:1 pistons
head porting and 900 cams [Bruce Meyers]
full exhaust
flashed ECU [Bruce Meyers]

these don't add to HP, but are nice [motor spins up faster, package handles better etc.]:
lightened flywheel [again, by Bruce]
dry slipper clutch [all aluminum components]
lightened and balanced crank [Ben fox]
carrillo rods
6 speed from '03 monster
swingarm off '95 SP
TiNi forks off 998
fork valving and rear Penske by NC Rick [you rule Rick]
forged wheels [NC Rick]


I could go on...but I'm sure you can see already that I am a complete lunatic.

Not only your wife, but all of her friends also with that list.

Must be a really nice ride. Balance is the key.

 

[mals900ss]

Originally Posted by blade625CT
not true...if you really want it.

I dyno'd mine last week. '99 750SS 80.3 rwhp that's better than a stock 900 SS


Interesting: 01 SS.. did the 5000 km service where they put on the DP Remus exhaust and map... 84.7 RWHP. I didn't have the money to get the cams dialled or airbox or... so of the general mods I'd say that was pretty standard... and not run in yet.

Here is a tip for riding yith your high HP jap bike buddies.. On a spirited ride through nice roads.. offer to lead them.. then balk them with traffic until you know YOU will get past. take off and only one might follow, the rest will be held up for a while but you get a break on them.. haha I do this with a hyabusa mate. Oh another tip is in the tighter stuff (with practice) stick just behind them.. Your sitting there with the booming exhaust means they won't be hearing their bikes.. just listening to you up and down one geas (less than they are). It's a hoot!!!

On a serious note... don't wory about being left behind.. search and read the article on "THE PACE".. ride to it and Email it to your friends...

 

[JDuc]

But, a 900 wouldn't fit into Ultralightweight Superbike. I built it with the sole purpose of competing in that class.

at some point, I'm sure I'll get around to building one of them [large case motor] too.

in that case I can understand it, however, for an average rider on the street, you must admit that it would be pretty ridiculous to do

 

[copperhead]

lol thanx for the advice, told you i was a newb lol, it sounds like this could be a fun bike to get into.....the bike that im looking at has been sitting, what are some things i should do jsut to get it on the road, i know it needs a battery, and i would do tires just as a saftey issue, any other matinence you suggest?

I just picked up my 1st Duc ('92 750SS) a few weeks ago, and I must say that it is an absolute blast to ride. Light, quick, handles great up here in the NH back roads. Did I say light? Well, at least compared the the BMW K and R bikes that I am used to. She's not the fastest bike out there by any stretch, but she has plenty of power to haul my 230lb body around.

Mine hadn't been ridden much in the past 1.5 years or so and I had it gone over by the local dealership before really riding her. She received new belts, fluids (oil & brake), new chain and sprockets, tires (Pilot Roads), carbs were cleaned and serviced, and a new crankcase breather.

Hope this helps

 

[1fast750ss]

Not to create a 900ss vs. 750ss thread, but I'm in the mind like Sean (Blade) here(good minds think alike). I did some similar things to mine as Blade, just not as high compression, as mine is a street bike. My 750ss was putting 76rwhp down before I added the 800cc heads. I just picked it up yesterday, so I have some tuning to do.

The difference: the 900ss has more power & tq stock, yes but, the 800cc heads flow better than the 900ss heads (ported). Just waithing for someone to come out with 800cc race cams so we can justify going bigger valves. I've seen 900ss' put out as much as 110rwhp, so I don't see a reason why a 750 w/800cc heads can't get 105rwhp(with the right cams). For that matter all of you 800ss guys and girls too. It'll cost a little less, dollar wise, to get the power out of a 900ss, only I have 1500rpm's more.

Can you get the same power with a 900ss... yes, but for not much-less money, but so much fun to do it to a 750ss and smoke all those SV650's.

BTW, before I start getting smacked around by you 900ss guys/girls, I also owned a '96 SP with the standard airflow/jet kit/exhaust mods. And I loved that bike too.

Brian C.

Let the flames begin.

 

[st2lemans]

To do the dry-clutch conversion, can you just use the side cover from a dry clutch bike, or is it more complicated than that?

Tom

 

[bigwiggen]

thanx for all the info guys, im going to go look at teh bike this week, take it for a spin and decide, ill let you know how it turns out.....thanks for all the great info!

 

[superduc21]

To do the dry-clutch conversion, can you just use the side cover from a dry clutch bike, or is it more complicated than that?

Tom

There is a thread on this called wet/dry conversion. That goes into some details but there is a lot more to it then just a cover. I am most likely going to start mine within a month or so.

 

[blade625CT]

To do the dry-clutch conversion, can you just use the side cover from a dry clutch bike, or is it more complicated than that?

Tom

It is definitely more complicated, but not rocket science.

brief overview:
http://www.ducati.ms/forums/showthread.php?t=4794

I am going to get my notes together for superduc21. I'll let you know when they are done.

 

[gomura]

Originally Posted by blade625CT
On a serious note... don't wory about being left behind.. search and read the article on "THE PACE".. ride to it and Email it to your friends...

Agreed... Also, sometimes riding with a group can get out of hand when the testosterone levels start to rise. It's important to keep a cool state of mind and try not to push your skill level too far... OK, I'm now stepping off my soap box.

 

[asshat]

SO............. 1 fast 750ss:
I have been interested in this 800cc head change since I first heard about it. Is it a bolt on? And if you don't mind me asking what kind of money are we looking at. I am curious if this is the easiest way to get 10 more r.w.h.p out of a 750? Let me know what you get out of her when she's done, bet it will be dramatic, and especially with cams. Don't any of the other 2 valve ducs have cams that would work? With adjustable timing gears?
Thanks

 

[1fast750ss]

The swap is direct. You have to keep a couple things in mind.

Different valve size and angle. The intake valves are 43mm vs 41mm, and the exhaust valves are 38mm vs 35mm. You will see a very slight increase in compression due to the change in angle. The inlet ports are more downdraft and when we looked at them, they looked almost polished from the factory. Much better flow.

Keep your eye on the cam timing as the 800 cams are different, require the timing variance, and will not fit in the 750 heads(due to bearing design) or vice-versa. You will want to make sure there is clearance if using stock pistons(valve cutouts) because the lift is greater in the 800 heads.

Money-wise, (don't frag me), I made money on mine. I bought an 800cc motor for cheap on ebay, pieced it out and kept the heads. Then I sold my 750 heads. I came out about $300.00 ahead, which went into the labor to install them anyway. I did sell my heads for around $450 (if I remember right) with coils, so I guess that would be a safe assumption for stock 800 heads. Compare that to doing a valve job and porting on your stock 750 heads at $1500-$2500. Not a bad deal as the stock 800 heads will outflow ported 750 heads.

I would say that a head swap would be your cheapest and easiest power upgrade.

We're hoping 90-95 rwhp with tuning.

I hope to be on the dyno soon, it's on the list along with moving in 2 weeks, selling the company, 20yr H.S. reunion, etc.

Once race cams come out, 45mm/40mm valves, ceramic coated cylinders and combustion chambers, and adapt 50mm TB's from a 748. I'm thinking of adapting the 5.9 ecu from a 620ss because I can up the redline to 12K rpm's.

100rwhp, 12000rpm's and 380lbs wet. HHMMMMMMM??????

All this because I was told that I couldn't get more than 75hp out of my bike.

HAHAHAHAHAHAHAHAHAHAHAHA........LIAR!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


Brian C.
I told myself I wasn't crazy, but I didn't listen.