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 Post subject: Blown Paso
PostPosted: Fri Dec 28, 2012 10:13 am 
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Joined: Mon Mar 30, 2009 7:59 pm
Posts: 269
Location: Australia
model: 906 Paso
year: 1989
This is a little project that has developed into a rather large project that I started during the winter months. I had it running today so I thought I might share it with anyone interested. The supercharger is an Aisin AMR500.
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Paso Supercharger 010.jpg [129.39 KiB]
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Paso Supercharger 011.jpg [130.08 KiB]
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Paso Supercharger 012.jpg [132.41 KiB]
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 Post subject: Re: Blown Paso
PostPosted: Fri Dec 28, 2012 10:48 am 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5418
Location: southern Germany
model: 750 Paso
year: 1987
Wow, I`m speechless. Never seen anything like that on a Paso :) :thumbup:
More photos, more infos ... :!:
(That tube on the right makes me wonder if the fairing still fits).

G.


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 Post subject: Re: Blown Paso
PostPosted: Fri Dec 28, 2012 11:40 am 
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paso grand pooh-bah
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Joined: Tue Jul 29, 2008 9:50 pm
Posts: 3232
Location: Hilltown,Pennsylvania
model: 906 Paso
year: 1990
Nice kept the Weber :beer: :beer: :beer:
Does the tank still fit :?:

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There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie


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 Post subject: Re: Blown Paso
PostPosted: Fri Dec 28, 2012 12:09 pm 
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Joined: Mon Mar 30, 2009 7:59 pm
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Location: Australia
model: 906 Paso
year: 1989
The hose you're refering to G doesn't stick out any further than the original cooling hose, well maybe a few mm, but the fairing still fits on. Yes Higgy, the tank still fits over the weber. If I take the horns and spacer off there is about 85 mm between the top of the carby and the underside of the tank. The next part of the job is to make up a new air box and filter arrangement. I wanted to keep the weber because I've worked on it so much over the last couple of years I feel I know it inside and out so to speak. I'll post some more pics/info up tomorrow.


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 Post subject: Re: Blown Paso
PostPosted: Fri Dec 28, 2012 3:32 pm 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
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Location: southern Germany
model: 750 Paso
year: 1987
How much boost does it produce, did you have to reduce the compression and what octane gasoline do you have to use ? I`m looking forward to see it run and curious about how the complete lower end will keep up.
An inspiring project.

G.


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 Post subject: Re: Blown Paso
PostPosted: Fri Dec 28, 2012 9:50 pm 
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paso grand pooh-bah
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Joined: Sun Aug 01, 2004 12:00 am
Posts: 1097
Location: siena, italy
model: 750 Paso
year: 1988
Such pics are your XMAS gift for us! :mrgreen: :lol: :evil: A dream to play with!
:truck:

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Black "DUKE" 751582
ex...Red "smooth" 753349 :-(


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 Post subject: Re: Blown Paso
PostPosted: Fri Dec 28, 2012 11:44 pm 
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paso grand pooh-bah
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Joined: Tue Jul 29, 2008 9:50 pm
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Location: Hilltown,Pennsylvania
model: 906 Paso
year: 1990
you could make something out of pvc./abs to fit under the tank and out the sidevents of the fairing I reckon :idea:

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Ducati,making mechanics out of riders since 1946
There's no problem so bad that a little fixing can't make it worse! : )
If it ain't broke keep fixin it till it is
88 750
90 906
92 907ie


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 Post subject: Re: Blown Paso
PostPosted: Sat Dec 29, 2012 9:09 am 
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Joined: Mon Mar 30, 2009 7:59 pm
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Location: Australia
model: 906 Paso
year: 1989
paso750 wrote:
How much boost does it produce, did you have to reduce the compression and what octane gasoline do you have to use ? I`m looking forward to see it run and curious about how the complete lower end will keep up.
An inspiring project.

G.

I have a gauge hooked up to it but the needle moves that much it's hard to tell what boost i'm getting but with all the calculations that I've done I should be getting about 3-4 psi. I didn't want to go anymore than 5 psi because the engine is standard apart from some head porting, everyone I've spoken to says that these engines are bullet proof but that also depends on the size of the bullet. I'm running it on 98 octane fuel, I haven't tried it on anything else. One issue that I need to fix is the amount of advance the ignition unit has. The advance is way to much with the increased vacuum in the inlet manifold so I'm going to have to find some way of restricting the vacuum signal or try and find some way of reprograming the ignition module, maybe someone here can help me with that. I've attached a couple more pics showing the manifold and rocker cover/blower mount and the 916 thermostat I used to help redirect the cooling system.
Attachment:
Paso Supercharger 007a.jpg [114.37 KiB]
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Paso Supercharger 015a.jpg [108.01 KiB]
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 Post subject: Re: Blown Paso
PostPosted: Sat Dec 29, 2012 10:33 am 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5418
Location: southern Germany
model: 750 Paso
year: 1987
maybe this is of interest
http://www.bikeboy.org/ducati2vignition.html
You`ll probably need colder spark plugs, too.
Fingers crossed the crankshaft bearings are still good and there`s no unbalance. The additional boost will put more stress on all parts.

G.


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 Post subject: Re: Blown Paso
PostPosted: Sat Dec 29, 2012 10:45 pm 
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paso grand pooh-bah
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Joined: Sun Aug 01, 2004 12:00 am
Posts: 1097
Location: siena, italy
model: 750 Paso
year: 1988
You have Marelli Digiplex sistem?
The ignition module can be reprogrammed and you can find themaps of many other cars using the same. Your best trouble will be identify wich kind of processor it has.
If I can remember, some of them have double sensor, before and after supercharger.

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Black "DUKE" 751582
ex...Red "smooth" 753349 :-(


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 Post subject: Re: Blown Paso
PostPosted: Sun Dec 30, 2012 1:17 am 
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Joined: Thu Nov 29, 2007 2:38 am
Posts: 327
Location: UK
model: 907 I.E.
year: 1990
One option (cheap and easy) is to remove the Digiplex system and replace it with the one fitted on the SS900/M900 "carburators" (2 pickups and two modules) BUT instead of fitting the Kokusan modules you just use an Ignitech programmable ecu type SPARKER TCIP4.

The Ignitech SPARKER TCIP4 is cheap (150$) and has all the options you need for your project; when you order it you just need to specify that is for a DUCATI and they will provide all the necessary connectors.

There is a "full version" that will allow extra features and being fully programmable you will be in position to change the advance for each range of RPM.

I think you could even add a TPS.


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 Post subject: Re: Blown Paso
PostPosted: Sun Dec 30, 2012 9:12 am 
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paso grand pooh-bah
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Joined: Tue Dec 06, 2005 12:00 am
Posts: 3312
Location: Roma, Italia
model: 907 I.E.
year: 1992
I would'nt to be the same old wet blanket...
Sure, it's a very exciting project but... I never would make a such thing on a such nice oldtimer.
So as I can't stand the oldtimers' races.
However, I'm curious about that challenge.
Good luck :beer: :beer: :beer: :beer:

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Ducati 907IE 1992 Rosso
Ducati 907IE 1993 Nero
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 Post subject: Re: Blown Paso
PostPosted: Sun Dec 30, 2012 10:50 am 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5418
Location: southern Germany
model: 750 Paso
year: 1987
Quote:
(2 pickups and two modules)
and different flywheel, isn`t it ?

G.


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 Post subject: Re: Blown Paso
PostPosted: Sun Dec 30, 2012 10:56 am 
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paso grand pooh-bah
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Joined: Tue Jul 20, 2010 9:27 am
Posts: 604
Location: Melbourne Australia
model: 907 I.E.
year: 1992
I'm speechless as well...that is an awsome bit of engineering you have going there, and neat too...
you must have a lot of time on your hands, keep up the good work :thumbup: :beer:

ps:a bit too much oil in the sump :)

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...long live the square framed duc!

'92 907...numero 2046
'92 851...in progress


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 Post subject: Re: Blown Paso
PostPosted: Sun Dec 30, 2012 4:49 pm 
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Joined: Thu Nov 29, 2007 2:38 am
Posts: 327
Location: UK
model: 907 I.E.
year: 1990
paso750 wrote:
Quote:
(2 pickups and two modules)
and different flywheel, isn`t it ?

G.


Unless you want to do dome machining and loose the original parts from the 906, the list of what is needed is simple... out of a SS-Monster 900 750-900 carburated youi need:

- left crankcase cover (including the stator)
- flywheel
- Rotor (for the generator)
- pickups
- a pair of coils
- Ignitech or KoKusan modules
- consumables (faston wires, solder, shrink-sleeve, etc etc)

everything can be found on ebay, then the fitting is a matter of a couple of hours, knowing what you have to do.

Most probably there will be the need of some drilling / tapping to fit the pickups.

alternatively you can do it using the original cover (with stator) and the generator rotor, but the cover will need a small hole for the pickup cables to come out and the old pickup location will need to be sealed.


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