Carburetors
We encountered a problem identifying and classifying carburetors for various ŠKODA models (external features, installation, type, configuration...), and since we could not find a practical overview, we decided to compile our own findings here.
Installation and replacements of SOP and BS carburetors
| Original vehicle | Original carburetor | Replacement vehicle | Replacement carburetor |
|---|---|---|---|
| 440 + 445 | 32SOP | 440 + Octavia | 32BS16 stamped 3099 |
| 450 + Felicia | 32SOPb ×2 | 445 + Octavia Super, Combi + 1202 | 32BS21 stamped 3109 |
| Octavia + Octavia Super | 32SOPb | 450 + Felicia + Octavia TS | 32BS19 rear + 32BS20 front |
| Octavia + Octavia Super (model ’61) | 32SOPb | Felicia Super + Octavia TS 1200 | 32BS22 rear + 32BS23 front |
| Octavia TS 1200 + Felicia Super | 32SOPc ×2 | . | . |
| 1202 | 32SOPc | . | . |
| 1000 MB, 100 | 32BST18 stamped “3170”, later “2903”, sport 32BS “3169” |
| 1100 MB, 110 | 32BST21 stamped “3171”, later “2904”, sport 32BS “3168” |
| 1100 MBX | 32BS + 32BST |
| 110 R Coupé | 32DDSR |
External characteristics of SOP and BS carburetors
| 32SOPb | Original | Fuel inlet on top with metal fitting and filter screen. Various internal setups depending on vehicle type, casting identical (diffuser 23). |
| 32SOPc | Modernized | Fuel inlet on top in plastic, without filter screen. Various internal setups depending on vehicle type, casting identical (diffuser 23). |
| 32BS16 (19, 20, 21, 22, 23) | Later | Fuel inlet from below. Various internal setups depending on vehicle type; different casting (diffuser 23 or 24). |
Internal data of SOP carburetors
| Carburetor | 32SOP | 32SOP | 32SOPb ×2 | 32SOPb late Pc | 32SOPb late Pc |
|---|---|---|---|---|---|
| Vehicle | 440 | 445 | 450 + Felicia | Octavia | Octavia Super |
| Throat | 32 | 32 | 32 | 32 | 32 |
| Diffuser | 23 | 23 | 23 | 23 | 23 |
| Main jet | 125 | 130 | 120 | 120 | 125 |
| Main air jet | 200 | 200 | 200 | 180 | 180 |
| Idle jet | 50 | 50 | 50 | 50 (45) | 50 (45) |
| Idle air jet | 130 | 130 | 130 | 130 (145) | 130 (145) |
| Starter jet | 110 | 110 | 90 | 110 | 110 |
| Starter air jet | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 |
| Pump jet | 45 | 45 | 80 | 45 | 45 |
| Bypass pump jet | . | . | 40 | 60 | 60 |
| Enrichment jet | 55 | 55 | none | 55 | 55 |
| Injector | . | . | 0.5 | . | . |
| Needle valve | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
Internal data of BS carburetors
| Carburetor | 32BS16 | 32BS19 | 32BS20 | 32BS21 | 32BS22 | 32BS23 |
|---|---|---|---|---|---|---|
| Vehicle | 440 + Octavia | Felicia + Octavia TS + 450 = rear | + front | 445 + 1202 + Octavia Super, Combi | Felicia Super + Octavia TS 1200 = rear | + front |
| Throat | 32 | 32 | 32 | 32 | 32 | 32 |
| Diffuser | 23 | 23 | 23 | 24 | 23 | 23 |
| Main jet | 120 | 120 | 120 | 125 | 120 | 120 |
| Main air jet | 200 | 200 | 200 | 200 | 200 | 200 |
| Idle jet | 50 | 50 | 50 | 50 | 50 | 50 |
| Idle air jet | 150 | 150 | 150 | 150 | 150 | 150 |
| Starter jet | 110 | 90 | 90 | 110 | 90 | 90 |
| Starter air jet | 4.5 | 4 | 4 | 4.5 | 4 | 4 |
| Pump jet | 50 | 50 | 50 | 50 | 50 | 50 |
| Bypass pump jet | 42 | 42 | 42 | 42 | 42 | 42 |
| Enrichment jet | 42 | --- | --- | 42 | --- | --- |
| Injector | . | . | . | . | . | . |
| Needle valve | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
Carburetor SOP.
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Carburetor BS.
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Carburetor BST.
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Used on Škoda Spartak, Felicia, Octavia, 1202 models. Carburetors SOP, BS. Source: J. Andrt’s book.
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Carburetor MB, MBX – provided by Mr. Tomáš Frýba.
Carburetor for models 100–110L.
Carburetor for models 110LS and 110R.
