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Old 12-01-2006, 05:08 AM   #1 (permalink)
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Default 680cc big bore kit for M600, is it worth it?

A motor swap is what I really want but it seems almost impossible since there are no 900 motors for sale in where I live. Is a big bore kit going to give significant improvement or is it just gonna be a waste of funds? I'm talking about the DP kit by the way..
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2000 M600 --> 680
DP 680 cc cylinders and pistones, DP oil cooler, Tommaselli clip ons, CRG lanesplit, 14T front, DP CF cans, Dynojet stage II jetkit with K&N, CC frame sliders, clear indicator lenses, Hyperpro rear spring, SBK + Racetech conversion, CF SS fender, hugger, sprocket cover, beer tray & plate holder, LED tacho.

1996 Ducati 916 SP3 (#343)
Corbin seat, some CF bits.
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Old 12-01-2006, 08:52 AM   #2 (permalink)
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Default Re: 680cc big bore kit for M600, is it worth it?

Sell the bike, and go buy what you want. It will be cheaper, easer, better resale, and just a whole lot less hassle - Unless, your looking for a project, of which case - have fun.

A while back, a freind and I did a small block Chevy conversion on a pristine 1940 Chevy coupe. By the time we got through cutting the coupes frame, welding in a new subframe, replacing the rearend, wiring, exhaust, and making it all work, he had much more in it than if he had just gone out and bought what he wanted. However, him and I liked these types of projects, so it was a good weekend project.

Having pulled I don't know how many bike engines out and put them back in again after rebuilding; Unless you love projects, have a donnor bike to get the engine out of cheap, or love to wrench, my suggestion is sell what you have, and go buy what you want.

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Old 12-01-2006, 10:18 AM   #3 (permalink)
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Default Re: 680cc big bore kit for M600, is it worth it?

Selling the bike and buying a bigger one was an option but not anymore, I have decided to keep it and swapped the forks etc. Put relatively lots of time and effort on it, it gives me what I need which is a lightweight compact machine. It lacks the power on the highway when we return home after a day in the twisties. The power is more than enough for me at the twists anyway, I am not capable of turning them with more than 100 mph :P What I am looking for is a bit of improvement in the max speed with maybe a marginal touch of low and mid speed acceleration development. I will not be doing the job myself but labor is pretty cheap here. What I need to know is... is it gonna be a totally worthless mod or is it gonna be beneficial for the money spent, which I will spend if the kit does not get bid above $1000. After that figure I am off the auction no matter what.
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2000 M600 --> 680
DP 680 cc cylinders and pistones, DP oil cooler, Tommaselli clip ons, CRG lanesplit, 14T front, DP CF cans, Dynojet stage II jetkit with K&N, CC frame sliders, clear indicator lenses, Hyperpro rear spring, SBK + Racetech conversion, CF SS fender, hugger, sprocket cover, beer tray & plate holder, LED tacho.

1996 Ducati 916 SP3 (#343)
Corbin seat, some CF bits.
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Old 12-01-2006, 11:15 AM   #4 (permalink)
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Default Re: 680cc big bore kit for M600, is it worth it?

It is not always the end goal that is what people want. I like the idea of the big bore kit. I know you could go out and buy an rs4r, but I am kinda like you I have lots of things done to my bike, I like it and I am proud of it. If you can get the kit for a fair price, I say go for it!!
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Old 12-01-2006, 01:29 PM   #5 (permalink)
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Default Re: 680cc big bore kit for M600, is it worth it?

if you are gonna swap motor, why not a 4v?

big bore kits give you marginal power increases and may or may not kill the reliability of your machine.

for the $$$, I believe that a stock motor out of a bigger salvage bike is cheaper than a smaller motor that's being pushed to failure.


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Old 12-01-2006, 01:51 PM   #6 (permalink)
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Default Re: 680cc big bore kit for M600, is it worth it?

Quote:
if you are gonna swap motor, why not a 4v?
I am not able to swap the motor cause M900 sales have been very limited here (so have been the bigger engined bikes for that matter) and it is almost impossible to find a motor off a salvage bike. Also, importing an engine is not a reasonable thing so swapping the motor is not an option.

Quote:
big bore kits give you marginal power increases and may or may not kill the reliability of your machine.

for the $$$, I believe that a stock motor out of a bigger salvage bike is cheaper than a smaller motor that's being pushed to failure.
That's an interesting point and the kind of information that I am looking for. Thge kit is OEM, but it still is risky and may cause engine damage you reckon? If so I will not be doing it for an additional 12 hp (which the seller claims)
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2000 M600 --> 680
DP 680 cc cylinders and pistones, DP oil cooler, Tommaselli clip ons, CRG lanesplit, 14T front, DP CF cans, Dynojet stage II jetkit with K&N, CC frame sliders, clear indicator lenses, Hyperpro rear spring, SBK + Racetech conversion, CF SS fender, hugger, sprocket cover, beer tray & plate holder, LED tacho.

1996 Ducati 916 SP3 (#343)
Corbin seat, some CF bits.
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Old 12-02-2006, 06:47 AM   #7 (permalink)
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Default Re: 680cc big bore kit for M600, is it worth it?

Having done some search I guess the big bore piston kit will not deliver any significant performance without high compression pistons. The kit in question here is a catalog item, 96401898C. Comes with
big bore 680cc cylinders and pistons, variable-advanced control unit, set of carbon fiber lowered silencers, Dynojet carburation kit + DP filter and claims to increase hp by 12 figures. I am not sure where the HCR gets in the equation here, or what ratio these cylinders/pistons have. Any comments?
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2000 M600 --> 680
DP 680 cc cylinders and pistones, DP oil cooler, Tommaselli clip ons, CRG lanesplit, 14T front, DP CF cans, Dynojet stage II jetkit with K&N, CC frame sliders, clear indicator lenses, Hyperpro rear spring, SBK + Racetech conversion, CF SS fender, hugger, sprocket cover, beer tray & plate holder, LED tacho.

1996 Ducati 916 SP3 (#343)
Corbin seat, some CF bits.
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Old 12-02-2006, 09:47 AM   #8 (permalink)
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Default Re: 680cc big bore kit for M600, is it worth it?

Do you mean this kit
http://cgi.ebay.de/Ducati-Monster-60...QQcmdZViewItem
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Old 12-02-2006, 10:10 AM   #9 (permalink)
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Default Re: 680cc big bore kit for M600, is it worth it?

Quote:
Do you mean this kit
Yes. I asked the compression ratio and the answer is 12:1
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2000 M600 --> 680
DP 680 cc cylinders and pistones, DP oil cooler, Tommaselli clip ons, CRG lanesplit, 14T front, DP CF cans, Dynojet stage II jetkit with K&N, CC frame sliders, clear indicator lenses, Hyperpro rear spring, SBK + Racetech conversion, CF SS fender, hugger, sprocket cover, beer tray & plate holder, LED tacho.

1996 Ducati 916 SP3 (#343)
Corbin seat, some CF bits.
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Old 12-02-2006, 01:38 PM   #10 (permalink)
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Default Re: 680cc big bore kit for M600, is it worth it?

Quote:
Originally Posted by qfactor
...big bore kits give you marginal power increases and may or may not kill the reliability of your machine...
I'm not sure on the marginal part. I had a Hawk GT racebike, 647cc stock had 48hp. Wiseco 700cc pistons upped to 65hp, thats nearly a 40% increase which is pretty dramatic.

I did also add Carillo cromo rods, pod filters, and jetted the carbs, and premium fuel was a must. I do agree about reliability, mine would require new rings every year but that might not be the case on a streetbike.

A big plus is that you will learn a lot about engines in the process.
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