So you've upgraded the carb?
Sorry, i should have been more specific. Original carb is gone. I bought it with 2 dellorto side drafts already installed. Which is a good thing. I would have liked to have the webber on hand just for originality sake.
It's weird to have the delortos. Anything is better than the Weber. That never worked right. The mikunis from my bike would be your upgrade. Mine is going to FCRs. If the delortos are working, cool. That was the set up in the 70s.
It appears they do fit. These are the V2 heads, so bigger valves and longer maintenance intervals. I also have an extra set of mikuni carbs.
Passed by a pristine fully enclosed fairing Ducati on my way to work today. Shoulda pulled over as I was an hour early.
Which Dellorto carbs are you running?
I've got 36mil pumpers on my Lemans and 32mm pumpers on my 860 GT and they're fantastic carbs to deal with, nor trouble from them at all.
nutherjrfan said:Passed by a pristine fully enclosed fairing Ducati on my way to work today. Shoulda pulled over as I was an hour early.
Ive seen a nice looking 900ss pass by my house quite a few times. Ill have to figure out who it is once I get mine up and running.
In reply to Trans_Maro :
I have 36mm, it ran pretty great before I botched it up. It had a tinny bit of a hang off idle, but i think something is just sticking a little.
Sorry for the long wait, I know you were holding your breath . I finally got the Bike back together!!!! once I got the head reworked ( new valve and guide) I just had to re-assemble. I lucked out with the valve lash. I only had to sand down one adjuster to get it to work out. I had to weld a socket to a wrench to torque the head bolts, but what else are cheap china wrenches for? It runs pretty well, but I think I might have a vacuum leak somewhere as the throttle seems to hang a little when you let off. Has anyone used reinforced silicone "Boost" hose down stream of carb before? The reason I ask is that I saw some of it advertised as "not safe for gasoline" The Oem boots (and aftermarket ones) are expensive and "boost" hose is cheap.
I rode the bike for 60 miles yesterday and she ran like a charm. No throttle hanging, idles well at 950-1050 rpm, pulls strong, runs nice and smooth (a lot smoother than my brothers 2011 Monster 796). The power seems to drop off at higher RPM but that's probably just the nature of the beast. The only problem now is that the battery light started coming on at anything below 1500RPM. It used to flash a little if it idled down to low (800RPM), now it slowly starts to glow around 1500-1600 RPM's and is on steady below that. hmmm more troubleshooting
As far as the throttle hanging goes, I did change out 1 carb boot that had a tear in it. That really didn't make much of a change. There were two vacuum lines coming off of the intake manifolds that Tee together and went somewhere up under the seat, not really sure what those were for... I capped them off and that really didn't do much either. I finally broke down and richened the idle mixture screws out 1/4 turn. Now it idles quite nicely and has much less tendency to hang. I probably changed the air fuel characteristics when I added intake track length over its previous config.
Facebook video of the ole girl idleing
https://m.facebook.com/story.php?story_fbid=10211776196631294&id=1560360090
I figured out where the mystery vacuum hose went. Turns out this bike was converted to marelli digiplex ignition (from the Ducati 900ss/ Paso 906). I suppose I should hook that hose back up and see how it runs. It must be for vacuum advance or something.
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