brrt50cal

So which Porsche diesel is that hooked up to?

hosrom_951

Looks overkill

333pg333

Even assuming that this is going onto a car with 400whp which hardly anyone has. This is overkill for sure.

PorscheDude1

I've seen more meat on a neck bone.

That thing is huge.

I do like the oval pipe.

DanR

Does the fact that it starts only 3" means that the 5" is irrelevant as the 'bottle neck' is there? Or is there still benefit (however diminished)

333pg333

If it starts at 3" and only ever get's bigger then there's no bottleneck.

DanR

but does that not also imply that the 3" as it is before the 4 and 5" offers more resistance at the source of the exit gas therefore redundating the rest of the system? Why not just have all the system 3" (my logic is the 3" is the critical path with)

PLease help me understand

George D

Patrick,

You are the overkill king. Only Australia has no 400WHP 951's.

special tool

Now THAT was funny!!!
Dynos read 300 HP lower in AU too....


Sorry Patrick.

Geneqco

No, your not taking into account the pressure build up that can occur as a result of the pipe length.
Dr Morrison designed and built a testing apparatus and completed some very detailed analysis of this phenomenon. The results of his analysis can be found in Scientific Design of Exhaust & Intake Systems published by Bentley.

DanR

ah guess it makes sense. like blowing down a short tube vs a long one. Greater distance cause turbulance and therefore more resistance

333pg333

You guyz........

If you want ST, I'll have it shipped to you so you can do a worthwhile test for it.

Geneqco

A confession??? guess it figures... that Patrick sure is one "crazy nutter"!

A.Wayne

Patrick,
Use a made in AUS dyno dynamic , as we use here , the comparision will be more accurate once you post your correction factor ....

George D

Geez, haven't you spent enough on shipping?