Slalom Polo by VGS motorsport Cologne

Engine overbore 1298.2cc 128 HP @? rpm

https://www.facebook.com/pg/slalompolo/notes/

 

Weber DCOE 40  136/137

Chokes 32

Aux venturi  6

float level 7mm

main

140

emulsion

F47

air corrector

160

 

idle 55f17

30 pump jet

.

Wow, he's dry-sumped it. Not on the Webers anymore

 

Edited 27 April, 20197 yr by dvderlm

Fiat 128p flowed and tuned

1290cc 10.2:1 CR

http://www.guy-croft.com/viewtopic.php?t=1444

 

(faster than 120hp Alfa GTV which I reckon has twin Dellortos as standard)

 

DHLA 40 (no suffix)
Choke 32mm

idle holder 2 (was 9) with mixture screws 7 turns out!
idle jet 40
pump 40
emulsion tube .5
mains 120
air corrector 190
 

Sprite and Midget engine 1500cc

 

Twin Weber 40 DCOE

 

Standard

Aux 3.5

Choke 28

Main 115

Air 170

Emulsion F16

Pump 35

Idle 45F9

 

Fast Road 

As above but

Choke 31

Main 125

 

Race

as above but

Choke 33

Main 130

Pump 40

Idle 50F9

 

https://books.google.co.uk/books?id=V3STrysMNjQC&pg=PA39&lpg=PA39&dq=dhla+sizing+venturi&source=bl&ots=p8IL_fkWka&sig=ACfU3U2wYJdUjzmkntfHmhMw32_5F7WWRQ&hl=en&sa=X&ved=2ahUKEwjN07bKhdHlAhUKEVAKHWLtDd4Q6AEwEnoECAkQAQ#v=onepage&q=dhla sizing venturi&f=false

 

 

AlfaRomeo Giulia Super 1290cc

9:1 CR. 89bhp @6000 RPM

140Nm torque  at 3200rpm.

 

Solex 40 ADDHE 11.

with holey emulsion tube (3x 0.8 5x1.0 holes)

 

Choke 28

Main 117.5

Air 155

Pilot 57.5

Pump 45

Pump vol 20 squirts  7 +or- 0.5 cc

Needle valve 1.6

Fuel level 18.5 +or- 0.5 mm

Starter jet 140

 

Edited 7 June, 20215 yr by dvderlm

O.S.C.A MT4 1342cc twincam 

(in 1450cc twin spark form this gave Stirling Moss 12 hours of Sebring win in 1954)

100bhp @6300 rpm

9.0:1 CR

 

Weber 38 DCO3

Choke 31

Main 120

Emulsion F1

Air 150

Idle 55 1.2bleed

Pump 70

Needle valve 2.25

 

Osca MT4 1350 Morelli Spider, 1952 [Auta5P ID:11206 EN]

 

Two thirds of a 1968 Porsche 911T Turbo 6 cylinder 1991cc.

is 1.327litres.

67hp? @ 5800rpm (all 6 cylinders gives 110hp and 177Nm torque at 4200rpm)

 

Compression ratio 8.6:1

 

Weber 40IDTP3C

 

Choke 27

Main 110

Emulsion F3

Air 185

Idle 50 

Idle air 110  (in carb body; the F10 idle holder has no hole)

Pump 50

Enrichment 70

Float height 20.75

 

http://forums.pelicanparts.com/porsche-911-technical-forum/431669-weber-carbs-diff-between-ida-idt-idtp.html#post4196754

Edited 20 July, 20215 yr by dvderlm

Hello, I have toyota corolla 2E engine and I install Solex 40 ADDHE carbs, can someone help me with jetting, what jets should I use, The engine is 1,3 12V 55kw

I'm not familiar with that engine, but know the Yaris 2NZ-FE and and 2ZZ-GE licensed by Lotus.

I don't know much about Solex twin carbs either.

 

A lot will depend on the choke/venturi size in the carbs and the cam duration...

Which 2e version?

https://www.engine-specs.net/toyota/2e.html
 

Also see this thread...

Lancia 1.2 used 42.5 idle.

 

(Engine will also need more ignition advance at lower revs on twin 40s than a single carb but about the same maximum advance.)

Edited 4 September, 20215 yr by dvderlm

15 hours ago, dvderlm said:

I'm not familiar with that engine, but know the Yaris 2NZ-FE and and 2ZZ-GE licensed by Lotus.

I don't know much about Solex twin carbs either.

 

A lot will depend on the choke/venturi size in the carbs and the cam duration...

Which 2e version?

https://www.engine-specs.net/toyota/2e.html
 

Also see this thread...

Lancia 1.2 used 42.5 idle.

 

(Engine will also need more ignition advance at lower revs on twin 40s than a single carb but about the same maximum advance.)

i have problem with carbs, I had a back fire in carbs was 45idle jet and 145 correcton jet, than I change them for 55-155 and now car have less backfire I have sometimes when Im driving around on low rpm, and when I give fuill throttle my car bog down want to die, but when I go slowly on gas pedal than car run normaly 

Innocenti Cooper 1275cc  9.75:1 CR

71bhp @ 5800rpm  

107Nm at 3200rpm

Innocenti Cooper 1300 [pics] | Retro Rides (retro-rides.org)

 

https://en.wikipedia.org/wiki/Innocenti_Mini#/media/File:Innocenti_90_-_120_-_Mini_derivative_A-series_engine.jpg

 

 

Twin Dellorto FZD 32.28

 

Choke 28

Aux 6641.1

Idle 48

Idle air bleed 80

Main 135

Emulsion 6747.3

Air corrector 190

Pump 50 (8cc +- 0.5 in 20 strokes)

Float height 5 or 6mm?

 

Dellorto_calibration_table.pdf (vintagegarage.ru)

Edited 20 September, 20214 yr by dvderlm

Vauxhall Nova Sport Group A rally car 1300cc

Weber 40DCOE

Ignition at 32deg @ 4000rpm

 

Choke 28

Idle 52f26

Main  125

Emulsion F16

Air 170

Pump 40

 

Just wonder how they rejetted for Brands Hatch

https://www.motorsportmagazine.com/archive/article/november-1986/40/musings-reasoned-racing

Ivan commented casually, “Just rev it to what it will reach, you’ll never break it.  The needle will disappear beyond 7000, but you’ll only need fourth on the longest straights…”

Edited 30 September, 20214 yr by dvderlm

Talbot Samba Rallye Group B9 1285cc

130bhp @ 6700rpm.

199nm  @ 5400rpm

 

40 DCOE 143/144

Choke: 33

Idle Jet: 59F21

Air corrector: 145

Emulsion tube: F47

Main jet: 130

Pump Jet: 35

 

https://rallygroupbshrine.org/the-group-b-cars/rally-cars/talbot-samba-rallye/

 

Edited 26 April, 20233 yr by dvderlm

Surprised I never added this one.

Sorg Polo GK twin carb as in the Gutachten (hotly traded in Germany as it is required for inspection on modded cars)

Weber 40 DCOE 136/137

Choke 31mm

Idle 55f21

Main 120

Emulsion f34

Air corrector 185

I assume this for the Sorg SM1008 plenum.

https://www.polotreff.de/forum/t/63700

https://www.motor-talk.de/bilder/suche-ein-gutachten-fuer-40er-webervergaser-fuer-meinen-polo-86c-1-3l-g75386024/sorg-3-i208605153.html

Edited 27 November, 2025Nov 27 by dvderlm