he said he is trying to eek out the most power from this engine without ordering new parts,he also says it is stone stock,so with that said why would anyone recomend welding the crank? if the engine is running good in my opinion splitting the cases just to weld the crank is a waste of cash.he will not gain any power from this mod a stock crank is fine again in my "opinion" up to 150-175 hp, back cutting the tranny is very expensive again why on a stock engine?
i have several turbo charged bikes i have had to many engines in them to count,i have a 78 1000 kz with a completely stock engine/tran well over 200 pass's at the track i run this bike everday with 9lbs of boost, at the track i run 15lbs boost i have bumped it up to 18 lbs many times in order to beat on sum of the newer faster bikes again this bike does not have a welded crank or cut tranny,i have blown many engines none were from a crank letting go. i have a non turbo 900 that makes 125 rwhp high comp,lots of head work,WAAAAY to many street race's to count no welded crank no tranny work no problems.
im not saying welding a crank is a bad idea but for a mild street engine i do feel it is a waste of cash/hard work,back cutting a tranny that is in good shape/working fine in my opinion is a very bad idea.