EMPI Accelerator Pump Cam — For EPC 48/51 and Weber 48 IDA Carburetors | Porsche 914 1970-1976 (47-1048-9)
Couldn't load pickup availability
EMPI Accelerator Pump Cam (47-1048-9) for EPC 48/51 & Weber 48 IDA
The EMPI 47-1048-9 is a genuine accelerator pump cam for EMPI EPC 48/51 and Weber 48 IDA carburetors, including those on the 1970-1976 Porsche 914 and air-cooled VW engines. Its profile controls pump-shot volume and delivery through the throttle stroke, and it is a bolt-on tuning change without disassembling the carb body.
Part numbers: EMPI 47-1048-9 / 4710489 / 47 1048 9 · accelerator pump cam
Fitment
| Years | Vehicle | Notes |
|---|---|---|
| 1970–1976 | Porsche 914 | With EMPI EPC 48/51 or Weber 48 IDA carburetors |
| — | Air-cooled VW | Engines running EPC 48/51 or Weber 48 IDA carburetors |
If you are unsure this fits your car, contact us with your year and model before ordering.
Specifications
| Spec | Detail |
|---|---|
| Part number | 47-1048-9 |
| Manufacturer | EMPI |
| Part | Accelerator pump cam |
| Carburetors | EMPI EPC 48/51 and Weber 48 IDA (48mm and 51mm IDA-style) |
| Function | Profile controls pump-shot volume and delivery through the throttle stroke |
| Fit | Bolt-on; no disassembly of the carb body |
| Ships from | Orange, California |
Why It Matters
The pump cam is the small lever that decides how much fuel the accelerator pump gives and when it gives it. Changing the cam reprofiles that delivery, matching the pump shot to an engine's appetite.
Installation Notes
The cam is a bolt-on tuning change that does not require disassembling the carb body. Swap it to cure a tip-in bog or trim an over-rich squirt.
Frequently Asked Questions
What carburetors does the EMPI 47-1048-9 pump cam fit?
The EMPI 47-1048-9 accelerator pump cam fits EMPI EPC 48/51 and Weber 48 IDA carburetors, a direct fit for 48mm and 51mm IDA-style carbs.
Does the EMPI 47-1048-9 fit a Porsche 914?
Yes. It fits the 1970-1976 Porsche 914 when it runs EPC 48/51 or Weber 48 IDA carburetors.
What does an accelerator pump cam do?
The cam's profile sets how much fuel the accelerator pump squirts and how it is timed through the throttle stroke.
Can a pump cam fix a bog on a 48 IDA?
Swapping the pump cam is a way to cure a tip-in bog or trim an over-rich squirt on EPC 48/51 and Weber 48 IDA carbs.
Do I have to take the carburetor apart to change the pump cam?
No. It is a bolt-on tuning change without disassembling the carb body.
Explore Related Categories
Browse more from Washburn's Metal: Fuel & Intake Porsche 914 EMPI
⚠ California Proposition 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
