Backcountry

The rings are going to be X distance from the combustion process regardless of the deck hgt....

Thank you for the good words everyone!!! Cylinder porting will not effect reliability to most extents. Cylinder porting isnt just about making big holes in the cylinders. All but the most extreme engines run very hard with only modest changes. Bigger most often is NOT better!!! Not only is selecting the right port size important, but also of importance is the port shape. The correct radii given to the port corners and the port chamfering all effect how long a top end will last. Proper tuning, good fuel, clean air filters are all very important to ANY engine lasting. I would say that those holy trinity right there will have absolutely more to do with your engine lasting than any port job. That as a rider/owner will have the most direct influence in keeping up on those than what your port grinder did inside. Crank true and weld is also an important consideration. Cant build a house without a good foundation...same goes for engines, cant build a engine without a good foundation. Next to a good set of pipes, cylinder porting is the next best money spent for performance gain returned!

Given the choice of a trail bike, Id tend to stick to the Banshee tranny... Duner- Id go RZ

Ive done a few RZ trannies in Banshees for dune hillshootin...Its a different ride for sure... Ive also tried mix and matching gear ratios...I think youd find the mix and match the most interesting and desirable... With the RZ trannied hillshooters we were running 16-41 or 42 gearing. Launch in 1st instead. With slightly taller 16-43 gears we could get 2nd to go and only shift once on the hill... My best advice....experiment to find what suits you the best. Gearing to me can be so subjective...

RZ experience....The International Karting Federation RZ350 Class West Coast Gold Cup champ.....thats all.....

PORT PORT PORT PORT PORT!!! Sorry... well not really... The exhaust duration of the RZ cylinders are plenty for any Banshee pipe, the width is decent as well...The transfers and intake need some work.... Transfers- reshaped, cleaned-up, and some more duration- not much just a lil- that will broaden the mid range more and mellow out the curve to be broader and smoother- peak power will pick up too.... Reshape the intake for better velocity... Get a good head set-up, good cages and right sized carbs!!! She'll rip!!! Oh yeah btw.... PORT PORT PORT PORT PORT!!!! -Dan