Dominicturbo
Member
Hello I have a set of CPR race pipe with Hauck stamped on it. I speak with Casey Hauck and this pipe are built by CPR and on very limited production. I am looking for a starting point for the carb jetting with TMX38 or stock bored to 35 carb. Also looking for the peak RMP power for set a point for start the clutching. Any info are welcome. Tkx
Have you tried to contact Jeff at CPR? https://www.simonscpr.com/
Bases on what you have done I am not sure about starting points but I found this:
If you are putting Simon CPR pipes on an SRX 700, your starting point is highly dependent on whether the engine internals are stock or modified.
If running a Stock Displacement SRX 700 Engine:
You do not make massive 160+ jet jumps. You stay incredibly close to factory baseline settings because the carbs are already tuned for triple-scavenging dynamics.
If you are putting Simon CPR pipes on an SRX 700, your starting point is highly dependent on whether the engine internals are stock or modified.
If running a Stock Displacement SRX 700 Engine:
You do not make massive 160+ jet jumps. You stay incredibly close to factory baseline settings because the carbs are already tuned for triple-scavenging dynamics.
- Main Jets: 145 (PTO) / 143.8 (Center) / 143.8 (MAG) is the typical safe starting window for an SRX. You might only step up one or two main sizes (to roughly 147.5 or 150) if the CPR pipes pull significantly harder up top.
- Pilots: Stock 45 or slightly bumped to 47.5.