FellowTraveler
Well-Known Member
I've been digging into the benefits or lack thereof a larger diameter x-over pipe I run a 2.25" flowmaster and have not found any real information on gains from a larger diameter x-over pipe.
According to Corkey bell 2" can flow 300 cfm in a N/A application and up to 500 cfm boosted application so I suspect the velocity loss of larger diameter x-over must be considered when running a non-gated turbine in that the max cfm flow for any given 6.5td divided in half along with drive pressure indicates 2" is all that is needed for most 6.5td x-over's then 2.25" for a highly modded 6.5td.
So a properly sized x-over on a 6.5td running a non-gated turbine housing we should see the benefit of faster spooling using 16/18 or larger cm2 units.
Input and thoughts are welcome.
According to Corkey bell 2" can flow 300 cfm in a N/A application and up to 500 cfm boosted application so I suspect the velocity loss of larger diameter x-over must be considered when running a non-gated turbine in that the max cfm flow for any given 6.5td divided in half along with drive pressure indicates 2" is all that is needed for most 6.5td x-over's then 2.25" for a highly modded 6.5td.
So a properly sized x-over on a 6.5td running a non-gated turbine housing we should see the benefit of faster spooling using 16/18 or larger cm2 units.
Input and thoughts are welcome.