Pipemax Exhaust Software
Posted: Tue Jun 11, 2019 10:01 am
Hi all,
Does anyone have the Pipemax exhaust calculator software? i'm looking to run through some specs and see what it calculates as the ideal exhaust system for a full race engine. I have used various free basic online calculators and they seem to differ a lot. Just thought i'd see if anyone has it before purchasing?
We have experience of running two different exhaust systems on the same engine and the differences were huge, one system used 40mm OD Primaries and the other used 1.75" OD Primaries. The smaller OD provided a better spread of power but was overtaken from 5700 onwards, the low down gains far exceeded the top end loss though. My view is that 1.625" primaries would work best, although it would be useful to back that up with some detailed maths. Also, both systems were 4-1 with long headers (approximately 32") into a 2.5" pipe. Both banks then joined to a single 2.5" pipe (single exit system is required). All of the calcs I have used suggest that 2.5" is too small, although the current power figures appear to exceed (considerably) the theoretical maximums that some sources claim a 2.5" pipe is capable of. The engine will use a single plane crankshaft, so we don't need to get into joining pipes from one bank to the other.
Thanks in advance.
Does anyone have the Pipemax exhaust calculator software? i'm looking to run through some specs and see what it calculates as the ideal exhaust system for a full race engine. I have used various free basic online calculators and they seem to differ a lot. Just thought i'd see if anyone has it before purchasing?
We have experience of running two different exhaust systems on the same engine and the differences were huge, one system used 40mm OD Primaries and the other used 1.75" OD Primaries. The smaller OD provided a better spread of power but was overtaken from 5700 onwards, the low down gains far exceeded the top end loss though. My view is that 1.625" primaries would work best, although it would be useful to back that up with some detailed maths. Also, both systems were 4-1 with long headers (approximately 32") into a 2.5" pipe. Both banks then joined to a single 2.5" pipe (single exit system is required). All of the calcs I have used suggest that 2.5" is too small, although the current power figures appear to exceed (considerably) the theoretical maximums that some sources claim a 2.5" pipe is capable of. The engine will use a single plane crankshaft, so we don't need to get into joining pipes from one bank to the other.
Thanks in advance.