The 500cc version requires a small change in the head configuration (for compression reduction) unless one has access to high octane fuel.
Some people fear to actually use a dremel on their head or might plan to eventually revert back to 350.
We now have a refurbished J-engine head for sale (new valves and valve guides, RE OEM) for only 80 Euro + 20 Euro add. shipping along with a 500cc BB kit.
That is what we paid for the work and material. This head has the 500cc compression reduction mods done.
Some people fear to actually use a dremel on their head or might plan to eventually revert back to 350.
We now have a refurbished J-engine head for sale (new valves and valve guides, RE OEM) for only 80 Euro + 20 Euro add. shipping along with a 500cc BB kit.
That is what we paid for the work and material. This head has the 500cc compression reduction mods done.
