Recent content by Max965

Many thanks both and for the very detailed response! Just to claify in laymans terms if there is 100CFM being compressed to 2:1 pressure ratio (@70% in steady state) but then the inlet flow doubles instantly to 200CFM and the compressor starts to slow down and eventually fall off the map. What...

Thanks Fabrico, So what do you recommend for the bypass valve and how can it open up or gradually open when pressure = atomsphere? I thought of a BOV but these dont open until a decent vacuum is created.

What happens to the air flow when its not on a turbo compressor map in the choke area? i.e too much air flow when you flow it from low rpms? Looking at the islands it looks like the pressure ratio just drops off almost vertically near the edges. Is this what happens and the turbo cannot compress...

Thanks for detailed explantions. One point was when ever the turbo needed more air than the SC, a bypass would open up for 1) letting the SC just freewheel and 2) the turbo can suck in all the air it needs. Sorry perhaps this wasnt clear. One point Fabrico, you are right it shouldnt be called...

I didnt disagree with what you said or even thinks it wrong. its not. But there is no point in using it like that unless you are trying to compound for more boost than the turbo can produce. Air is air, do you want it to be compressed by a turbo or an SC? if you need both then your turbo is too...

Thanks, this is a long response because I have read many of these topics and they never come to anything too scientific, this is why i came on this forum. I know people are interested in it. I realise SC and Turbos are different however these are my thoughts: a turbo can compound. Based on a...

Thanks for the responses. I am going to use a roots blower but will not be able to put it on the intake as my engine is already turbocharged with the intercooler ontop of the intake manifold, its a 3600cc 911 Turbo engine. It seems there are two setups, the Lancia Delta T>SC and the new VW Golf...

For those who are 'pro' twincharging I am interested in discussing the technicals of the combined Supercharger and turbo used in series. The 3 states are 1) Supercharger by itself (low revs), 2) turbo by itself (high revs) and 3) the change over point. Will there be any difference between an...