Lambretta Carb Set-ups.....

Check here for a list of various carb set-ups to help with jetting and all aspects of carb trickery!
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Location: Beckenham, Kent

Sat Jun 19, 2010 12:48 pm

Race Tour RT230
PWK 28
JJK Needle 2nd clip from top
40 slide
45 idle
108 main
Marchald filter
BGM Stator 17 degrees BTDC

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Location: Matera - South Italy

Sat Jun 19, 2010 1:30 pm

Ts1 225, tuned exhaust port and transfers.
Af RB race crank, pacemaker gearbox 17x46, Rewired indian ignition with 2,3 kg lightened flywheel.
Jolly moto reverse pipe, V-force 3 reed valve.
TMX 35 running Tino Breath-Sweet filter:
20 pilot
3/4 turn air screw
58 needle 2nd slot
310 main jet.

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Location: Belgium, near Waterloo

Thu Jun 24, 2010 10:20 am

jean wrote:Cambridge lambretta show a new table about "Basic carburettor settings"

When you compare with the last list and many many set-up present here, it's richer between 1/4 ->3/4 (needle smaller/atomiser bigger) and poorer after 3/4 (mainjet).

I try it since 1 month (mugello 186), it's very good, more torque...
Well, news:

For the mugello, it work, like this, but with the ancilloti exhaust:
PHBH 28mm
airfilter type Ramair
slide 45
AV266 main 108
starter 50

BUT, with the exhaust JL Road KRP3, it don't work with the airfilter...
I tried multiple main jet, and it's impossible... because, I think, It's too rich at 1000-3000 rpm and the carb drowns itself at the level of the airfilter (many many fuel in the airfilter)
Maybe, the JL needs more air/fuel than the ancilloti... :?

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Posts: 58
Joined: Mon Nov 23, 2009 8:25 am
Location: manchester

Mon Jun 28, 2010 5:01 pm

mugello 4 225
mec 60mm crank
dellorto 28mm
remote filter
112 main
48 pilot
x7 needle 1.5 notch from top
40 slide
mixture screw 1 3/4 turns out
timing 19 degrees
sterling pipe
pacemaker gearbox with 46/16 primary
very rideable and pulls hard and clean so . may change pipe for jl in future. tried a fresco but didnt suit kit.

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ebay user ID: scootrogcat
Main scooter: Indian GP200
Location: SWINDON (Wilts)

Thu Aug 19, 2010 10:30 pm

Race Rapido 200, ports smoothed
102 main,40 slide, X12 needle,top clip, 50 pilot, 60 choke, AV264
19x47 SX10 box. over 70 mpg||||

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Posts: 7
Joined: Mon Dec 28, 2009 7:05 pm

Sat Oct 23, 2010 5:52 pm

Franspeed Pipe
30mm PHBH
148 Main
52 Pilot
X7 Needle (3rd groove down)
AV266 Atomiser

Much better now
Last edited by jefo1970 on Thu May 26, 2011 1:54 pm, edited 1 time in total.

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lee b
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Location: Atherton gtr manchester

Wed Nov 24, 2010 2:32 pm

this is in mine:
225 mugello standard gp 200 gearing.
ancilloti 48mm clubman
28mm PHBH open mouthed,short bellmouth
264 atomiser
115 main
53 pilot
x2 needle on top clip (from memory)

runs slightly rich,but not too much,goes well not had it dynoed as yet,but pulls like a train.

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Posts: 472
Joined: Tue Aug 04, 2009 8:40 pm

Sat Jan 22, 2011 11:51 pm

TS1 230cc harry barlow touring tune - 18 degrees indian static timing
30mm PHBH no filter
52 pilot (very slightly rich - could get away with 50?)
AV266 atomiser
X2 needle on TOP clip
140 main to be safe

and good with:

48mm clubman
ron moss special clubman
taffspeed knockoff pipe
taffspeed mk 4 pipe
Last edited by mickdale on Tue Apr 19, 2011 9:53 pm, edited 1 time in total.

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Posts: 614
Joined: Wed Jan 07, 2009 12:24 pm
Location: Nuneaton

Mon Jan 24, 2011 1:08 pm

Mick believe me all 148 will do is use more fuel. 140 is still big I just left it in to satisfy Harry huge jet :D
My clubmate Tracys TS1 ran a 128 before a powerjet was fitted(uses 122 now) and it makes 8hp more than yours.

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Joined: Wed Jan 07, 2009 10:45 pm
Main scooter: SX150/GP Muggy/LiS3 Avanti TT3
Location: Weymouth

Sun Jun 12, 2011 12:30 pm

Mugello 186 v4
KBA Clubman 42mm
Li 125 gearbox 17 and 46 sprockets (4.98 final ratio)
Though Airbox and filter (neck removed inside box but no extra holes) & GP airscoop
TM24 carb (cable choke conversion and Dellorto elbow cable adjuster fitted)
main: 180
pilot: 17.5
needle: 4DH7-clip 2 down (the richer 5N13 on clip 1 was still a bit spluttery around 1/2 throttle but I left it alone while running in)
slide: standard as delivered
atomiser: standard as delivered "O"

Recently run in and have done initial checks from idle to 3/4 throttle, very clean response through the range. The main might come down a bit later Overall thrilled to bits with it! :fb:

Carb kit supplied and initially jetted by that nice Mr Corrado, highly recommended!


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