Weber or Dellorto/Mikuni; Final Answer?!

[jklnhyde]

For all you Dellorto/Mikuni 'converts' out there, did you ever have any regrets in discarding your Webers?
I have two complete Weber setups at home that I am experimenting with, but I am not fully convinced that I will ever be able to set them up to my satisfaction, so I am considering the Dellorto/Mikuni conversion.
I am not concerned one bit about originality as much as rideability and reliability.

It's time to cast your votes!!
Rick

[randtcastell]

I purchased my '87 Paso with 40mm Del'Ortos and I am very pleased with the set-up. The carbs are real easy to adjust or rebuild, and they are Italian, and they work w/o fail. No fuel pump in the system is, I believe a good thing. The Del'ortos are simple and appropriate to the 750 Paso methinks and that's my two cents. Best, Randy.

[Finnpaso]

Not big troubles with Weber(only that "flat spot" in 90-100km/h speed), but i wanted something better, so converted to 40mm Dellortos what were too big(and very thirsty!) for "not modified" 750cc engine, so i turned to Mikuni's (from 750ss).

[Fraser]

Rick,

I also have Mikunis, the difference from the Weber is remarkable. The bike idles sweetly (no stalling at lights) and no annoying flat spot, just pulls cleanly. The bike also feels more powerful.
Cheers,

Fraser.

[ducinthebay]

Can't tell you about the Weber, as i haven't ridden a bike with one on it. I have ridden three 750 Sports with 36mm Dellortos on them, and they run just like they should, and get up to 115mph on a regular basis. Haven't run the Mikuni setup yet, but I have one on the shelf waiting for the day I can put them on and try them.

Cheers,

[higgy]

the answer to the weber flat spot is coming soon. detailed info will be provided.Unleash the true beast in any weber for less than the cost of any conversion. FCR performance at 1/10 the cost
no leaky del, no choked down mikuni, no $1000 keihins required. just some minor jetting changes a drill and new auxiliary venturi and some wiring mods. If you are a regular here on the Paso.org
you most likely have 90% of the mods done already.

115mph hahaha how about 145mph and clean up and down,easy start and no flat spot. And a sound only a Weber can make on a Paso.

[dewjantim]

When I got my first Paso (a 906), I ordered a K&N air-filter and jets from the European Paso. Installed the jets, set the low speed needle jets, put in the filter, and adjusted the idle. Top speed went to an indicated 140 mph and driveability was spot on. So far I haven't altered anything on my new (to me) 750 Paso.... but I will........ ......

[paso750]

145mph with a stock bike is something you dream off unless that is just read off the speedometer which may indicate quite optimistic at that speeds
Top speed loss with carb conversions I guess are in most cases due to missing airbox. Top speed and open filters just don`t combine that good.

[higgy]

have not had time to verify with the gps,of course it is the speedo Still it runs clean all the way thru........

My dreams? warm summer days and a nice ride well below 145mph

only time I get to go that fast is on the way to the Desmo picnic

[Finnpaso]

Gearing ratio(sprockets) makes also big difference to top speed... I dont need so much top speed (at all) here. With suitable sprockets Ducati behaves much nicer in city traffic and in curvey roads and U can beat very many jap bikers with suitable gear ratio in twisty roads(what fits very well to me!)... That "top speed" is not so important. More important to me is behaving of bike/engine, gearbox, brakes, etc.... Now to hot Sauna! with

[dewjantim]

Sometimes you can put on a bigger rear sprocket and actually go up in both speed and acceleration . I did this on my 900SS and gained a few mph because the bike would pull more rpms' in high gear. Before gearing it would run an indicated 130 mph (how ever fast that is) and about 134-136 afterward ...

[jklnhyde]

...waiting on that flat-spot answer, Higgy...

[higgy]

grand pooh bahs are proofing it, won't be long. Dotting "i's and crossing "t's" takes a little time. You will have a nice project for the rest of the winter
With a little luck we can release it into the wild next month
Have a few other ditti's to add as time allows. One is a trial of the Grose jet with our other mods. Also plan to see what works on the 750 Sport and Paso
Future additions will be on ECU remapping and Welding up 16 inch wheels to 17 inches.
Also would like to get a dyno run into the mix to verify our work and document top end speed maybe put a modded weber on the flow bench to see if there is any more
power to extract in a simple fashion with a minimum of fuss.

Romus has done a first rate job of putting all on paper

[commotoed]

I am shopping the Dellortos now, but would love to explore simple repairs to the Weber, cleaned & rebuilt last year it did exactly what they said it would.............surge pop poof, still love the bike!
eh

[higgy]

Delayed release to add a section on cam timing