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Post by whorobj on Dec 14, 2011 8:23:49 GMT
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Post by gregpap on Dec 14, 2011 9:04:59 GMT
the only thing for sure is that you need 5mm not 6mm jets...
now, see what the previous owner has inside and decide...my opinion is to stay below 75 for 75-80cc, but you need to test it...
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Post by whorobj on Dec 14, 2011 9:11:05 GMT
the only thing for sure is that you need 5mm not 6mm jets... now, see what the previous owner has inside and decide...my opinion is to stay below 75 for 75-80cc, but you need to test it... just wondering, why are you sure it's 5mm? dell orto website and everywhere else leads me to believe it's 6mm |
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Post by gregpap on Dec 14, 2011 9:13:40 GMT
cause I have many dellortos passed from my hands... ;DLOL
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Post by Perkin on Dec 14, 2011 11:24:13 GMT
Whereabouts are you? I have plenty of jets kicking around.
Also proper 16/16 carbs. That 16/12 will just restrict it...
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Post by whorobj on Dec 14, 2011 21:20:31 GMT
Whereabouts are you? I have plenty of jets kicking around. Also proper 16/16 carbs. That 16/12 will just restrict it... san antonio. Yeah i've read the 16/16 makes a good upgrade even the 19/19. I just wanted to replace the broken carb that was on it when i got it and get it running. Carb upgrade among other things is deff on my list. |
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Post by amazombi on Dec 14, 2011 21:39:02 GMT
These are different carbs and will not be a straightforward fit on yours. The Automatic uses an FHBB carb, not a SHB like all other smallframes. The FHBB takes a 6mm mainjet, as standard it should be a 76 or 78.
If yours does 75 kph it definitely is kitted. Pinasco recommended to keep the standard jetting, I'd upjet to something around 82 or so. If it runs now, and runs well, sell it while you get some money for it. They are not exactly bullet proof, and if they break spare parts are not that easy to get. Or try to get your hands on spare parts, possibly a spare engine in time if you want to keep it on the road for longer.
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Post by whorobj on Dec 14, 2011 23:06:29 GMT
These are different carbs and will not be a straightforward fit on yours. The Automatic uses an FHBB carb, not a SHB like all other smallframes. The FHBB takes a 6mm mainjet, as standard it should be a 76 or 78. If yours does 75 kph it definitely is kitted. Pinasco recommended to keep the standard jetting, I'd upjet to something around 82 or so. If it runs now, and runs well, sell it while you get some money for it. They are not exactly bullet proof, and if they break spare parts are not that easy to get. Or try to get your hands on spare parts, possibly a spare engine in time if you want to keep it on the road for longer. thanks for affirming what i thought. People just don't understand that the automaticas aren't the same. It's very mechanically sound. Probably just get it as daily-able as possible until it's time to sell it and upgrade. pulled apart my old carb. main jet is a 65 |
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Post by amazombi on Dec 15, 2011 6:16:58 GMT
They are quite rare, so most people haven't had a chance to look at one. I used to work at a Vespa dealer in the 80ies, so I had to. I'm not a huge fan of these though. www.altevespa.de/rollertechnik/tabellen/pkauto/pk50xlauto.htmlThat's a sheet with some data at least. Check jet sizes there. Usually this source is accurate, so I'd take that as a starting point. |
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Post by whorobj on Dec 15, 2011 6:36:19 GMT
They are quite rare, so most people haven't had a chance to look at one. I used to work at a Vespa dealer in the 80ies, so I had to. I'm not a huge fan of these though. www.altevespa.de/rollertechnik/tabellen/pkauto/pk50xlauto.htmlThat's a sheet with some data at least. Check jet sizes there. Usually this source is accurate, so I'd take that as a starting point. ive found that kind of info before but mine is rare lol. xl2 auto was made in '90 only. the data sheet shows a 16.14 carb, mine has 16.12 and a 65 main jet not a 75, that's stock. if i had to guess i'd get a 70 and like a74 and see what happens |
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Post by amazombi on Dec 15, 2011 8:26:42 GMT
Sorry, I meant I was working there in the 90ies. They either had the 16/12 or the 16/14, depending on which market they went to. Jetting appears to have been the same for both.
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index
V90
PK50XL2 1996, 50 Special 1981
Posts: 57
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Post by index on Dec 16, 2011 23:41:59 GMT
SIP recommended main jet between 66 and 68 for my PK50XL2 with a 75cc kit. I have tried with 69, 70 and 75, but it runs better with the standard 65. So I will order 66 up to 68 the next time...
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Post by whorobj on Dec 17, 2011 6:42:31 GMT
SIP recommended main jet between 66 and 68 for my PK50XL2 with a 75cc kit. I have tried with 69, 70 and 75, but it runs better with the standard 65. So I will order 66 up to 68 the next time... what exhaust are you running? could i ask what your carb settings are like? someone else that has an xl2 and speaks english! I feel like we should start a club or something. Going to get a new plug tomorrow too. I might as well replace the last thing that could've been destroyed when resurrecting this thing. Got this thing running after 12 years at least on that plug. Hard to tell what color it is/was anymore lol |
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index
V90
PK50XL2 1996, 50 Special 1981
Posts: 57
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Post by index on Dec 17, 2011 8:57:19 GMT
It has a standard Sito exhaust, and an original 16/15 carb.
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Post by amazombi on Dec 17, 2011 9:04:43 GMT
Are you sure you're talking about an Automatica? If so it shouldn't be a 16/15 carb. The geared XL II and the Automatica are two completely different engines, I don't think they have a single part in common.
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Post by whorobj on Dec 17, 2011 21:56:59 GMT
Are you sure you're talking about an Automatica? If so it shouldn't be a 16/15 carb. The geared XL II and the Automatica are two completely different engines, I don't think they have a single part in common.  |
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Post by carolf29 on Jun 18, 2017 22:54:41 GMT
Can I ask where you got your carburetor Dellorto Fhbb16/12 .. as I require one and I cant find one anywhere .
Thank you
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