Dellorto Carb Setup Tips - Beginners Strip Down Guide - Vespa & Lambretta Carburettor Jetting
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- Опубликовано: 15 апр 2021
- Dellorto Carb Setup Tips - Beginners Strip Down Guide - Vespa & Lambretta Carburettor Jetting
The Targa was having a bad-carb day, so I opted for a strip down and check. Whilst in there, I took the time to offer a few basic setup tips for beginners.
The PHBH is possibly the most underrated carb for Lambretta & Vespa scooters, repeatedly overlooked in favour of more ‘exotic’ setups. Yet the PHBH is affordable, available, easy to set up, and has a great balance of cost vs performance vs fuel economy. Plus, for the vast majority of scooter owners, there are some very repeatable ‘base settings’ which you can use, for around 90% of all scooters, in order to get your ballpark starting point to work from and go on to perform plug chops with. There are also some crucial mistakes you must not make, as these can kill an engine very quickly if not followed.
More Dellorto videos for Vespa & Lambretta:
Part 1: • How to set-up a Dellor...
Part 2: • Part 2: How to set-up ...
Part 3: • Part 3: How to set-up ...
Suggested reading:
The Complete Spanner's Manual: Lambretta Scooters: amzn.to/3qX3R1v
Haynes VESPA Service & Repair Manual: amzn.to/3rNR2aY
Haynes Vespa Scooters 1959 - 1978: amzn.to/3rPov4M
Two-stroke Performance Tuning: amzn.to/3eG8quk
Motorcycle Tuning: Two-Stroke: amzn.to/3qSUpMd
Oil:
Castrol A747 Racing Oil: amzn.to/38GfUda
Castrol ‘Power 1’ Two-stroke oil: amzn.to/3eJe3Ie
Parts:
Supergrip Lambretta 5 Plate Clutch Kit & Springs: amzn.to/3bLeK1Y
Lambretta Adjustable Rear Shock Absorber: amzn.to/3qHYOli
Lambretta Viton Engine Oil Seal Kit: amzn.to/3rKWlrw
Vespa PX/PE/T5 Viton Oil Seal Kit: amzn.to/3cA6VuX
Security:
Oxford OF802 Monster Chain & Lock 1.5m: amzn.to/3vo3Ab3
Oxford OF178 GP Chain Lock: amzn.to/3eHleAS
Oxford Products OF34 Disc Lock: amzn.to/3bLiX5M
Cleaning:
Muc-Off Clean, Protect & Lube Kit: amzn.to/2Q85n3Z
Muc-Off Cleaner, 1 Litre: amzn.to/38CX7z9
WD-40 Degreaser 500ml: amzn.to/2OS6u7o
WD-40 OIL 450ml: amzn.to/2OwV2OB
T-Cut: amzn.to/3cBKnKi
Autosol: amzn.to/3lk5C7s
Tools:
Syphon pump kit: amzn.to/3eH5TQv
5l Fuel Can: amzn.to/2Q6EjSL
Flexible funnel: amzn.to/3vq72Su
Home hobby compressor: amzn.to/3bOU756
Sealey 14 Drawer Topchest and Rollcab Combo with 239 Pcs Tool Kit: amzn.to/3rQxsuH
Gunson timing light: amzn.to/3eFd0cl
Vlog equipment:
Dragon Touch 4K Action Camera: amzn.to/3rSjhoG
GoPro HERO8 Black Bundle: amzn.to/30JVxHJ
#dellorto #jetting #scooteringmagazine #lambretta #vespa #scooter #scootering #exhaust #clubman #dyno #scooteringmagazine #lambrettascooter 
Развлечения
thx mate! finaly someone, who points out the right size of the fuel chamber needle, cheers to that! 😎🍻
⁴
Finally someone has gone over the parts and functions that I can actually visualize and identify their use!
The best video I have seen about Dell'orto carbs!
Hello from America 🇺🇸, I just bought a 1984 Moto Guzzi V65C and it has two phbh 30 carbs and this video was the best walkthrough I could find anywhere on this and your explanation was fantastic. Keep on keeping on!!!
Much appreciated, feel free to share 🤓😎
My PHBH 28 had become corroded during 2020 lockdown and so I used this video to guide me through a strip down and clean. My Lambretta started 3rd kick ... thank you so much for posting such a helpful tutorial ... really is appreciated 👍
Much appreciated, feel free to share 🤓😎
Can I ask what engine and exhaust you have. I'm struggling to start my 28mm phbh. Also do you know your jet sizes?
Great info, 👍 thanks my dude! Working on setting up my Vespa with Reed valve!
Great video , good bit of info
A huge learn!
Excellent video. 👍🏻👊🏻
Good quick introductory video but worth mentioning is one critical factor and that is float height. Dellorto have set float heights for set carburettors and if you don’t check this height - especially if buying second hand - it could be set too high causing fuel starvation and conversely, set too low could cause flooding.
All of which I am sure you know but want to make viewers aware of this. Bolti
I assume there is a tab that bends to set the float height?
Hi. Have learnt a lot from your channel. Thank you. Question. Vespa. Lml reed valve case. Pinassco 177 kit. Sip road 2. Phbh 28. Carb. I have the carb sitting at about 1 o’clock position. Banjo on the high side. Not parallel with the ground. Otherwise it will hit the body. Do you see this being a problem? Thanks
Thanks for the information.
What are the two vents on the sides of the carb body?
I have fuel spraying out of both!
Hi thank you for the video , we run PHBH 28 on our ohvale GP2 , we find the throttle response hesitante in slow second gear bends would raising the needle to richen help?
Hi mate, I have a honda crm 125, it runs perfectly a part from cold, I put the choke on and it fires up straight away, as soon as I drop the choke off it stalls and cuts out, I have to warm the bike up with choke full on for around 4/5 minutes before it will tick over, once it does warm up it’s absolutely fine will start and tick over, it’s just on the cold starts, like it isn’t getting enough fuel on tick over when cold, it uses the PHBH 28 carb, do you have an idea on what’s happening? Thank you
Hi, could you just give me a rough idea what a 34mm carb jetting needs to be for a sst265, for our climate, as I think out of the box from rimminni the settings are a bit too rich.
Cheers.
Great informative videos .
On the 1515 where should I set the screw? I'm a 68 jet batavus hs50 I had it running only with no filter on then I started changing Jets and the screw put back to 68 and it's not running now
Hi. I have an standard SX200. Is it ok to run a Dellorto PHBH 30 AS? If so what’s the recommended jetting?
I had this with mine, it turned out to be ethanol swelling the float an sticking, I drilled out the hole the pin sits in and the edges of the float were catching..
Hi, I'm currently restoring a 1962 li150. It has no Carb and I was thinking of running a phbh30. It has a "swift" exhaust and no other engine work.
I'll be running no air filter, do you have any recommended settings I could use as a starting point please?
Thanks
Rich
Hi ya I’ve got the same make carburettor but my one is a 34… My question is I’ve got a little brass looking screw or something and it’s dripping fuel. Can you show me what it is and how to fix it please. Maybe do a video of it would help if you have a 34 carburettor. Many thanks as you may tell I don’t know a lot at all about carburettors.
Brilliant video as usual. Does anyone out there know the jetting for a lambretta li 150 with a mogello 185 kit on? I don't want top performance, just a nice ride. Thanks
Its a spray tube and its designed to smooth out pulses on a 2 stroke . but its not needed if you run reeds .. as in the dellorto manual there is no two stroke or 4 stroke carb they are the same , only some components are changed such as spray tube .
My 30mm Delly has a brass dish with 4 small holes in it, it's a push for around where the atomiser goes, what is it and is it necessary?
It’s a surge washer. I always leave them in.
Hiya could you help. Ive rebuilt my standard 200 lambretta, phbh30 and a pm pipe. I'm just trying to find My base settings.
Carb set up.
Inlet 350
40 slide
X7 needle on 2nd clip
Av266
120 main
50 pilot
60 choke.
Do you think I need to go x13, 55 pilot to start. What size main jet and needle clip would you recommend. Top videos BTW 👍
Start with 55p and 125m - other settings seem OK as a starting point. Do road tests and plug chops at varying throttle positions in order to refine.
Why does my scooter have a slow tick over even with the tick over screw wound all the way in?
Slide replaced with new, still the same
What is the engine spec (kit, pipe and carb make/model) and what is your existing jetting spec (main, pilot, atomiser, needle, clip, slide, etc).
Where was your anti surge washer ? Or was they not fitted on the solid mount type , no mention about them .
I normally eave them in. These carbs came with the engine and never had the. Presume it’s a ‘solid mount thing’?
@@drunkmunkey6969 probably due the the less vibratory engine it was deemed unnecessary too fit, but I’d still fit one 😁
Great video, i have a 28mm that currently has fuel pouring from the float bowl overflow, reckon its the float valve or float causing this?
Yup, very likely one of those... only one way to find out! 🤓
Poking the end of a dirty steel screwdriver, into a finely machined aluminium casting, or near a throttle slide, gives me the heebie jeebies.
Great, but confusing when started talking about about screws on other random carbs
@7:46 its not 40mm high the slide cut out (thats 4cm!) its cut at an anle of 40 degrees
Why have solid mount with it’s known problems 🥴
Good question, this was how the Targa came, not my choice :)
@@drunkmunkey6969 blame Tino then 😆
Bro stop scratching your carb :D
Ace video as I've just used standard vespa cars. Running a 24mill delertto on a pk130 🛵so I no my idle and air cheers ace video