Re: Need advice tuning PHBG carby
You know the main fun with these engines as hobby is figuring out how these engines and carby's work.
I recommend you do the head gasket removal mod, works amazingly by boosting compression.
Simply sand down the head and cylinder head surfaces perfectly flat using wet-n-dry glass paper and water on piece of glass on a table. This only took me a couple of hours and with care I ended up with two PERFECTLY flat and smooth surfaces which sealed without the head gasket. Amazing results by boosting the compression ratio slightly. Best performance improvement I have done. Still waiting to get my expansion chamber going!