manifold problems

discussions specific to the 750 Paso

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Fraser
Posts: 334
Joined: Tue Jan 17, 2006 12:00 am
model: 750 Paso
year: 1986
Location: Lower Hutt, New Zealand

Re: manifold problems

Post by Fraser »

Crusher,

Try Grant at spares@ducatispares.co.nz or visit their site WWW.ducatispares.co.nz as they are wrecking several Ducatis (including a Paso) for another manifold. Or try Phil at Desmocycle (sorry can't find his email address). Always keep an eye out on TradeMe, as I've seen carbs & manifolds for sale (there is a Weber carb/air box and manifolds on TradeMe at the moment for $60ish, if you really get stuck).

Cheers,

Fraser.
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ducinthebay
paso grand pooh-bah
Posts: 1323
Joined: Sat Sep 03, 2005 12:00 am
model: 750 Sport
year: 1990
Location: SF Bay Area

Re: manifold problems

Post by ducinthebay »

I found rubber elbows at;
http://store.airflo.com/90hl2.html
I used 2inch (50mm) with the screw on velocity stack on my Dellortos. It all fits tight in the engine compartment, but better than cramming little aircleaners into the rear cylinder. I used a short aluminum sleeve at the end of the hose since the air cleaner had 2" id also, so there are two hose clamps right next to eachother and a third one at the carb. So you need a total of 6 hose clamps.

I'll post a picture this weekend when I get time.

Cheers,
Duc in the Bay
1990 750 Sport x2-Rosso Blanko (900ss copy) & Nuovo Nudo (Scrambler project)
1991 907 -mostly stock
2002 ST4s - Lots of mods.
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wilbur
Posts: 70
Joined: Fri Sep 22, 2006 12:00 am
model: 750 Paso
year: 1987
Location: Port Murray, NJ

Re: manifold problems

Post by wilbur »

One carb should point to the front and one to the back.
I had this carb set-up on my first Paso. They were great. The only draw back was no choke. Just an enrichening circuit, so you had to keep the revs high by working the throttle until the engine was warm, gradually backing off on the enrichener aka choke lever. It was very easy to foul a plug.

Ok, here is the correct set-up. Using the Mallossi manifolds for the Dells as noted by Paso750 in that image, the carb on the left in that picture is for the front cylinder (horizontal), the carb on the right is for the rear cylinder (vertical). Just substitute your Mikunis for the Dells in that picture. So, the horizontal cylinder carb points to the rear of the bike. When I had this set-up, I had to run foam filters as there was not much room for the filter. The filter basically layed next to the cam belt cover of the vertical cylinder.

There is a manifold you can buy for the front cylinder that will turn the carb toward the front of the bike and make this a nice installation. Check out this video.
http://www.youtube.com/watch?v=7FDx-lpW27k

Manifold
http://www.autotrimdesign.net/detail.js ... gory=72142

I hope this helps.
Thanks

Tim
Port Murray, NJ
1987 Ducati 750 Paso
1995 Ducati 900SS SP
1999 Ducati 996
1998 ST2
2000 Honda RC51
Crusher

Re: manifold problems

Post by Crusher »

Thanks for the great info Wilbur, as I was already playing around with the old manifold 2 c if it could still face forwards, but ran into problems with the aframe and was still on a lean so float levels r? so thanks never thought 2 run it out the side, so it looks like im buying a new manifold cheers Paul :thumbup:
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persempre907
paso grand pooh-bah
Posts: 3312
Joined: Tue Dec 06, 2005 12:00 am
model: 907 I.E.
year: 1992
Location: Roma, Italia

Re: manifold problems

Post by persempre907 »

Nice video and interesting stuff :thumbup: :thumbup: :thumbup: .
Ciao
Francesco
Ducati 907IE 1992 Rosso
Ducati 907IE 1993 Nero
Moto Guzzi Galletto 1960 Sabbia
BMW R Nine t 2019
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Finnpaso
paso grand pooh-bah
Posts: 3091
Joined: Mon Jul 26, 2004 12:00 am
year: 0
Location: Finland

Re: manifold problems

Post by Finnpaso »

Thanks Wibur for very good video and explanation! Great job!!!! absolutely.... :thumbup:
Antti http://www.youtube.com/watch?v=HeKOh3XoXPg&NR=1
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