Originally Posted by defcon13

well,
just to give some feedback about my go pro 5port. i'm now at the 1.5 gal on this engine and so far, its a dream to drive and tune. i was a bit sceptical about the tuning with a long lsn, but i found it very easy. the powerband is exactly what i was looking for, good bottom (not too much like a .28) and very good top end with the 086 pipe. only thing i didn't checked yet is runtimes. they seem good but i dont think that the 086 pipe is the best pipe for this.
i have changed the conrod at the 1 gal mark like some have suggested. i was a bit surprised to see that there was some slope of the conrod on the crank pin. i just hope it was caused by the breakin and that it wont be an issue during the rest of the life of the engine.
last thing to see is the lifespan of the engine. if it lives as long as some say (8-10 gal) i will be definitely sold to these engines!