RE: another darn ryobi post (ryobi performance modification, analysis and comparison)
I had some more time today so I performed test #6
Test #6 I took the best results of test 1-5 and used a 12.8 mm venturi carburetor that ws purchased on ebay for 15bucks. After making the necassary modifications to the carburetor which pretty much just consisted of swaping stock parts from other carbs to make the configuration that worked best for my application I test ran the engine and had my biggest gain yet.
Recorded RPM 7170 thats a net gain of 500 RPM !!!!!!!!!!!!!!
Ok so far just using the best stock parts from different engines and a 12.8 mm carb venturi from ebay with no special mods other than a thinner base gasket I have acchieved a gross RPM gain of 870 RPM !!!!!!!!
I was a bit dissiponted in the flywheel and crank swap. I was sure this was going to yeid some increase from advanced timming. This just was not the case due to the fact that I am thin king the timming is set within the ignition coil electronics as the coils could not be interchange with the other flywheels.
I am debating weither to do the electronic ignition first or do the backplate mods first. I probably will do the backplate first as i dont have any money to but the ignigtion yet.
It would be nice to see someone follow the same process I am doing to see if they get simmilar results. All in all I think we are starting to see a map of what changes or mods will yield what gains in power.