Ok double check my reply cause might be a lot of blah blah. We run at an elevation of 1500 near Waynoka. That is where I do final jetting after a new top end since that is primarily where we ride, like 99% of our riding is there. Higher elevation means less dense air, . Less air, more fuel....you need to lean your mixture. You wrote " Heres an example to think about. Stock engine and install a rev pipe, power block ( 8 to 9 weights) with a rev delete. Think throught the process and see what is affected. The engage ment speed is around 4500 to 4700 and the clutch run out engine rpm is around 7900 to 8000. Stock port timing with a CR of 6.2 to 1." I would think a stock ported jug would not let the back pressure arrive back into the cylinder because the piston will close off the port too soon when coming on a high rev, therefore you would need to raise the port some as you did with my jug. Ok now keep in mind Im so green I might ribbet or maybe even croak but that is what Im getting from all this babbl babble. You ask if this is a good set up for higher elevation correct?You would jet you engine for the elevation so the transfers and or mixture shouldnt be affected with elevation once properly jetted, what else changes, you mean in the pipe?, ok, let me ponder, lower air density, lower cylinder pressure,so after scavaging and upon compression stroke less jug pressure meaning a rev pipe would return be OK in this situation. Man how did you some up with that scenerio?? Please expound on why it would or would not be good for higher elevation. These statements above should be read at you own risk, I am not an expert and would not even consider myself a hacker. So anyone reading this please consult with an expert before applying anythin above,,,,There thats my disclaimer!!
I wrote "So I can take a rev pipe, wrap in proper insulation and turn it into a torque pipe?" I wrote this to confirm what I read in the pdf. I wasnt inferring that I want to wrap my pipe I got from Mark. In fact the ceramic coating didnt hit home until you mention it. Are you saying that the pipe is ceramic coated to allow holding in heat? The pipe I got from Mark is ceramic coated but its a TORQUE pipe?!? This is getting tricky because I am thinking it could have been a REV pipe that was ceramic coated to achieve TORQUE type pipe??
