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Old 08-27-2008, 11:03 PM
RLorange RLorange is offline
Motorized Bicycle Elite Member
Join Date: Jun 2008
Location: Australia
Posts: 127
Default Re: Need advice tuning PHBG carby

Thanks Datz!!

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!
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