Join Date: Jan 2014
Location: South Central PA
Compression isn't the issue with the 103. Its the heads. So until you can afford to CNC the heads and put larger intake valves in, I would not pull the top end down unless it needs rings. You can still make 100HP+ with just cams, pipes and a good breather.
And if money is an issue, don't start until you have the piggy bank well stocked. Chances are you'll end up needing to split the cases and replace the wheels. If the oem set wobbles, and most do, you'll be needing to replace them too.
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Last edited by Thermodyne; 08-25-2018 at 08:06 AM.