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I've not updated on my 501 in some time. At this point, the project is very close to "done" (although I still need to replace the rear shock at some point). The PHBH 28 carbs I've got jetted and working well, and the Vespa coils are providing good spark. On the whole I am very happy with h...

I changed the fluid on the front forks on my 501XE Camel (the old fluid looked just fine - so that's good). Put in standard 10W oil. I have the factory manual, which leaves out a few details on this bike it seems. When I pulled off the covers at the top of the forks, I found that the fill ports had ...

I'll do some more playing around and seeing what I can find. But, the bike is running better than it ever has under my ownership thus far, so that's a good thing.

EFI is so much easier to tune... once you get it set up.

I've spent the past month and change trying to tweak the jets on the PHBH 28 carbs on my 501XE Camel. I've made good progress on this. I've reduced the main jets from 110s originally in the 28s down to 95s, and I've kept the X10 needles for the time being. Overall, the bike rides really well now. Ab...

I think before I order new jets, I want to do a bit more riding on the bike, but I also want to switch the needles from being on the 2nd ring from the top to being on the top ring. That should lean things out a bit as well and might help the running issue. It's an easy/quick enough swap to do. I thr...

You also mentioned the different needle jets/pulverisers in the 30 mm carbs, well they were also a pumper type acceleration jet in those US spec bikes. They were worked by the throttle needle when it raised. Hence another needle type in the mix. I think you'll be much better off with the 28's. That...

I worked on getting the PHBH28s on the Morini in place of the 30s, and got the first one together. Unfortunately the two carbs use different atomizer types, so they weren't compatible. I basically threw some parts from each carb together and I expect it will be too rich at the top end to start, but ...

I think getting the throttle body assembles used/from a wrecker would be the way to go, and had figured that in the cost estimate. I used to own a Moto Guzzi V7 Racer but never got into it particularly deep to see what parts it had inside. Agreed that the Morini's issue is space. Maybe some of the n...

If you can design a simple, robust system, I'm sure there would be interest. The carbs are wearing out and the bodies are no longer available. A nice, new manifold would resolve a lot of the problems, too, with the rubber inlets... It definitely could be done, the cost aspect is probably the bigges...

check out this page for the carb values for the settings: https://www.motomoriniclub.nl/carb.html Thanks. Looking at that, it looks like I may end up being best off taking the bits out of the PHBH30s on there now to put into the 28s, and that may get me the closest. These 28s I have that came off o...

Thanks for the suggestions. I've ordered the rebuild kits, and it sounds like I need to see what I have in there better. I know I have two 110 mains and one 100 main, but I don't know about the others within the 28s or what's on the 30s. Truthfully I far prefer EFI. Then again, I used to program it ...

I managed to order a set of PHBH 28 carbs that I'm going to rebuild in hopes of addressing the fueling hole that seems to exist at 4000 RPM. Since I have PHBH 30s that came with the American market bikes and as I understand others had 28s, hopefully this will improve things. I'm trying to figure out...

Thanks. When these carbs arrive that I've ordered I'll take stock of what I have in them and then decide what to do jet wise to start.

Last night I did some checking around on eBay and managed to score three PHBH 28s. I figure out of the three I should have most of the parts needed for making 2, and then make sure I have appropriate jets. Hopefully that will help things. As far as I can tell, there is nothing missing from the airbo...

John, what parts of the airbox did you replace that had been removed? My airbox seems to be complete and stock.