I dynojetted my 750ss. I also opened up the airbox, added uprated coils and leads and slip ons. The main effect was to make it sound wonderful and and to make it much more tractable and rideable. It did not transform it into a ball of fire.
The other thing you can do is consider the final drive gearing. My ‘97 is geared stock and quite long legged. I played with our other 750 a bit and the effect was dramatic. It was out of legs by 110mph but acceleration was improved. That bike also had stage 2 Dynojet and breathed nicely. That plus the sweet handling made it an enjoyable ride.
The best upgrade was to chop it in for a 999, which has double the power of the 750SS, maybe 3 times the power of a 600SS. Better bike in every way, apart from the sound. I miss the bellow of the SS - the 999 sounds more like a machine gun.
Yes, I tried dropping the front sprocket by a tooth but missed the long-legged feel, so swapped back as I found it to be too buzzy. Have dropped the gearing on the 999 though, as don't need it to be geared for 180mph lol
I already have low gearing so acceleration is pretty peppy. I like the idea of a really fast bike like the 999 but not the reality. I like that I can red line the SS without killing myself. I'm not such a good rider I could use that much power...
Before you spend out on a Dynojet kit; strip your carbs and see if one is already fitted - the chances are around 75 - 80% IMO. I can provide the Dynojet info if required, but there is quite a lot in the Supersport section of the forum which makes it possible to identify Dynojet stuff. The 750 engine definitely has no provenance - I won't touch it because it may be from a stolen bike. He wants £350 for it, but that is too much to risk, I reckon. AL
I'll do that and come back to the forum no doubt for advice Not till the snow sets in though. After finally getting to ride it 5 years since it last was on the road... I'm enjoying it too much to take apart lol
So rather than a 750 graft I'm thinking a ferracci 675cc big bore kit might be the better option. Need a rebore of course but less intrusive than grafting a longer stroke top end on.
If the 750 and 600 crank cases are the same, probably are?, by far the best option would be just to drop a second hand 750 engine into your frame, cheaper, quicker, more reliable, you should be able to pick a 2nd hand engine up for around £500
Correct. Although it would be wise to upgrade the suspension and sprockets with 900SS parts; and the brakes depending on the OP's set-up (one or two discs / caliper size). Plus of course, the carbs depending on which the OP has. 900 carbs are jetted differently.
A bit to much power I think. It's a single disk front and a more basic suspension. But to be honest I'll be happy with 60ish horses. A750 or possibly the overbore kit are my favorite options. Especially the overbore. Fun to fit.
I think a better way to go is establish what parts Ducati and previous owners fitted to your bike in the way of suspension etc - you may be surprised. For example has the front fork leg without the disc got two spare lugs for another caliper.....and are the forks Showa or Marzocchi? Which shock is fitted to which swingarm etc etc? It really comes down to what you have, what you can afford and what price you can get things for.
I hadn't considered that. Good point. I'll see if those parts are stock or upgraded etc. I must admit I'm definitely open to a 750 engine if one comes up for sale. I'm not averse to upgrading other parts. I just don't want to go overboard else it really is better just to buy the bigger bike. But as you say if it is half way there already and the right parts come up at a good price... I'm open to that.
I just found the original photo you posted - you have a normal/usual steel swingarm and although I can't see the shock properly, I suspect that is a Sachs Boge one (should have blue adjustment knob on top of the reservoir). The forks are Marzocchi - they can be made to work quite well, but there aren't spare lugs on the right leg for an additional caliper. If you can find a good condition 750 engine at the right price, it would be worth getting another fork leg so you can have a twin disc set-up. At least you have the later fairing lowers with the extra side vent. For Brembo brake repairs etc, see your friendly KTM dealer - you won't pay as much even if Ducati will supply them.
