Valve spring options for Honda GXH50

[Wrench]

Straight pipe it! Unless you like your hearing.

Curve the straight pipe up to the left so it'll be real loud for drivers with their window down

 

[Sidewinder Jerry]

The GXH50 will rev well beyond 7500. I have seen more than 8500 (no load) from my engine despite having a governor. Mine routinely hits 7800+ RPM (with load) for extended periods of time, thus the question about valve springs. As far as I can tell the GXH50 has no true rev limiter. I asked Honda directly if the GXH50 can overrev, and they responded yes especially without a load.

Does removing the spark arrestor on these things do anything for HP or does it just make more noise?

I assume higher octane fuel makes no difference with such low compression.

Of course it'll rev higher than 7500 rpm. The 7500 rpm is the max rpm recommended by the owner's manual. Going above it you risk damaging a stock engine. I don't know the age of your engine but damage can be accumulative over time.