Ducati 996 engine custom build

[buzzer]

I know it’s not a Monster...  but you guys seemed to be interested in my multi special build, so I thought I would start a new post on my next custom build, which is going to be based an  ST4s

http://www.ducatimonsterforum.org/index.php?topic=76771.0

So here it is as it arrived.  It’s a running bike with 22k on the clock.  it’s not as tidy as it looks in the pictures, the paintwork in particular lets it down.  It’s a runner, but it had some electrical issues, which were easy to trace, the loom was a mess!

I have now stripped off all the parts that I definitely know I won’t use, and these are being sold to fund some of the build. First little job has been to machine the top yoke and rough some clamps out so I can fit conventional handlebars, to make it easier for me to move it around, and so I can sell the originals.

I am not sure yet on the style this will end up, but it needs to be reasonably easy to ride, no clip ons!  I am also going to make a tank in alloy this time, and work is already underway designing and making an English wheel which I am quite excited about.

I took the Multi out yesterday for its first short ride and was REALLY pleased with the way it run on the new ignition and carbs...  and that got me thinking...  I don't think anyone has done a 996 engine on carbs...(most will say why the hell would you!!)  I like the idea!  So I have sourced a pair of nice flat slide 48 mm carburettors!  Watch this space!

[Speeddog]

I used a set of HSR's on a race bike in the 90's, is that what you've got?

[buzzer]

I used a set of HSR's on a race bike in the 90's, is that what you've got?

They are off a Honda Firestorm, similar sort of power output I think

[koko64]

So HSR48's as used on big inch HD drag racers?

[buzzer]

I have decided to give the keihin 48mm CV flatslides a go...  these are off a Honda VTR, and apparently they are some of the biggest carbs fitted to a bike... unless you know different of course!  they have come up really well...

[koko64]

Yep gotcha, oem VTR1000 CV carbs, I envisaged Mikuni flatslide HSR48's. Biggest CV carbs I've heard of. Maybe S&S have a bigger drag racing carb in imperial size, but they're a straight butterfly carb.

[buzzer]

a little bit of progress, I have made the first manifold out of plate and tube, its come out quite well...  I have managed to mount the carb at the same angle it was on the Honda VFR it came off.

[koko64]

It's great that you can just whip up a manifold like that.

I think they're the biggest CV type carbs used on a bike iirc. You going with the VTR jetting as a baseline since it's a 1000cc, twin OHC, 4 valve V-twin, or have another setting?

[Howie]

 

[buzzer]

It's great that you can just whip up a manifold like that.

I think they're the biggest CV type carbs used on a bike iirc. You going with the VTR jetting as a baseline since it's a 1000cc, twin OHC, 4 valve V-twin, or have another setting?

at first yes, I think the configuration and power output of both bikes is similar enough.  we will see...

[buzzer]

I have mounted to other carb, it sits high so I had to cut a panel in the tank to clear it.  I may end up making a tank for this build, but for now I will use the original to get it all running

[koko64]

 

[buzzer]

thanks,  there wont be any updates to this thread until late September...  I have put the bike to the back of the garage and covered it up.  it was meant to be my next winter project, and I said I would not start it...  but its a good time to sell off all the parts I dont need, hence the strip down.  I couldn't resist a little play!

so its days out, riding, and some big holidays until September!

[buzzer]

Late August and the weather is terrible…  so I have made a start… for a few weeks before we go on holiday anyway  no going back now as I have had the angle grinder out on the rear of the frame.  I really don't want to use the ST4 tank though so I have managed to find a badly dented Ducati alternative in a breakers, which seems to fit after a bit of under tank surgery!

[koko64]

The way the tank exposes the rear head looks good.