Solex Carburetors
We restore a number of different Solex carburetors for early Porsches: single barrel, dual barrel, and sandcast Carrera.
What We Restore
32 PBJ / PBIC
Early single-barrel Solex carburetors for pre-A and early A models.
40 PBIC / PICB
Larger single-barrel Solex for early Super motors.
40 PII Sandcast
Short 4-bolt and tall 5-bolt for early Carrera.
40 PII-4 Solid Shaft
For S90, SC, and early 912. The standard dual-barrel Solex.
40 PII-4 Split Shaft
Late production with emissions synchronizing device. We convert these to solid shaft.
See conversion details →
Pricing
Final pricing is based on the condition of your carburetors and any repairs or replacements required beyond a standard restoration. The base price has remained unchanged for 5 years and includes basic work — cleaning, butterflies, new shafts, assembly, and setup.
Any additional work requires recycling parts (as with floats), repair, or purchasing replacements — which is why we ask for like-for-like cores unless otherwise agreed.
Please contact us for current pricing.
$200 deposit requested for purchase without cores.
Payment must be made within 60 days of order completion, or carbs revert to inventory and deposit will be lost.
We accept PayPal, Zelle, and wire transfers.
Manifolds and air cleaners are available periodically.
Split Shaft to Solid Shaft Conversion
The single-shaft Solex 40 PII was first used by Porsche in the 1955 1500cc Carrera engines installed in the 356. The 40 PII-4 came with the first Super 90 engines in late 1959.
The split shaft was introduced in the late 1960s as an emissions control measure. It has a better transition from idle to main jet operation due mostly to the 2 additional bypass ports in the throat, as well as having a separate idling circuit. The two independent shafts are controlled by a central mechanical pot metal synchronizing device connecting the two halves.
After approximately 50 years, this pot metal device degrades — broken, worn, with rusty screws and degraded plastic blocks, leaving little butterfly control. The result is poor synchronization and inconsistent performance.
Jim developed this conversion to answer these issues. Our conversion replaces the split shaft assembly with:
- Custom chrome-moly steel shaft
- Four bearing bronze bushings (vs. original brass)
- New butterflies
- 8 new accelerator pump parts
This conversion has become so popular that we are no longer doing split shaft restorations as split shafts. Now you can have all the advantages of the split shaft Solex — extra power and smoother transition — with the relative ease of adjustment that single shaft Solex are known for.
Related Resources
Please note we only use the solid shaft solex diagram numbers for parts orders. Use the split shaft diagram only for those parts unique to that carburetor.
Ready to restore your Solex carburetors?
Contact us for a quote or to discuss your specific needs.
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