i want the crank cases for my aerox flowed is there certain depth's or anything it would be great if there was a guide on how to do it your self
for minarelli case work heres a couple of interesting reads: http://www.scootershack.co.uk/viewtopic.php?f=8&t=17732 http://www.scootershack.co.uk/viewtopic.php?f=8&t=10136
i cringe when i hear the words "flowing crankcases" years ago i had a mint RD250 that had been tuned, i fitted allspeeds and a ledar kit and after a few good thrashes it seized!! stripped and re-built, ran in and.......seized again!! re-built again, this time with modded RG500 big ends, ran in and.......yeah, seized again!! found out that the cases had been flowed and because the big ends rely on pumping from the cases the critical part that would pump to the bearings was missing them causing them to run dry and basically explode!!! you really, really need to know what you are doing or entrust a proper tuner.
well said.... as for "set messurement" no... its not a single cut, its pritty fucking hard to even draw it in cad... doing a set of cases well is full on metal sculpture. you need to see the finnished shape in your stock case befor youve even cut it... this requires experience, detailed one to one instruction or a whole load of cases, bearings and time to try it out. lots of people will say "ye do it, anythings better than nothing" but its faar to easy to make things worse befor you make them better, and even then if you do get some gains you will probably pay for them in metal..... im not being big headed, but i didnt just come upon this, nor hit the right shape first time, but i have tried alot of different ways of doing cases, know exactly where i have lots of material and where i dont aswell as an indepth understanding of exactly what is going on in the case. if you want to try for yourself im not saying dont, im just saying be aware.. as for instruction, i throw up pics here an there but quite frankly its cost me money to find out what works and more importantly how to do it, so i wont be taking my time writing out page after page on "how to flow your own cases" one i did at the weekend, no filler, nothing crazy on the transfer feeds.
When you take the crank case apart to port it or flow it or what ever you want to call it is it held together by a few bolts on you have to cut it in half? : "/
and no it doesent just come apart wiht the bolts out.. tbh if you have to ask, dont try rebuilding your own engine. it will all go horibly wrong
Am i right in saying that in side the crank case it has to be like an abrasive texture to it,(i dont no how else to explain it) thats what ive been told because its the texture what purely helps with the fuel air mix flow in the crank casing and thats if its just smooth and shiny you'll lack in the correct flow ?
Here's a minarelli crank I made for a polini evo 50. Had to leave the cylinder stock, though crank case modification was allowed. Unfortunately, we do not have a sand blaster in my town, so this is made only with a Dremel, some sandpaper, and my own hands. In the meantime, the guy who owns this engineblock won the 50cc drag cup with this block http://imagerz.com/QE9BX0tvAwMAA1JERQVR http://imagerz.com/QE9BX0tvAwMAA1JERAVR http://imagerz.com/QE9BX0tvAwMAA1JERwVR http://imagerz.com/QE9BX0tvAwMAA1IcEQVR http://imagerz.com/QE9BX0tvAwMAA1IcEAVR http://imagerz.com/QE9BX0tvAwMAA1IcEwVR http://imagerz.com/QE9BX0tvAwMAA1IcEgVR http://imagerz.com/QE9BX0tvAwMAA1IcFQVR http://imagerz.com/QE9BX0tvAwMAA1IcFAVR http://imagerz.com/QE9BX0tvAwMAA1IcFwVR
