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I think the trust pipes works. along with what ever nismo ones i have seen on the 32..

the hks however is fail for arc box.. so either sell the airbox, or sell the hks kit and grab the trust job..or go custom!!

I think they're fine, I wouldn't buy a new one though due to the silly cost

agree, i think they are around $500-$600 brand new maybe more. mine came with the car hence why i want to keep it and i just bought new ARC filter for mine which cost me somewhere are $200 :)

I agree, super smooth ports and inlet piping are shite for airflow. As the inlet air sticks to the piping / port walls and slows down.

Edit - think of a golf ball vs a pingpong ball, which one goes faster through the air.

im pretty sure from what i remember in fluids class. you want a smooth port in internal flow like a pipe (inlet ports) so the flow

doesn't get affected by the boundary layer or turbulence due to sharp edges.

external flow you want a high Reynolds number thats why there's ridges on the golf ball

I agree, super smooth ports and inlet piping are shite for airflow. As the inlet air sticks to the piping / port walls and slows down.

Edit - think of a golf ball vs a pingpong ball, which one goes faster through the air.

mate, your example doesnt work, you are comparing fluid flow to a particle in fluid. you cant compare apples with oranges.

mate, your example doesnt work, you are comparing fluid flow to a particle in fluid. you cant compare apples with oranges.

Then why has there been 30 odd years of PRACTICAL testing on Aspirated V8s / f1 cars / turbo cars etc, hence CNC ported aftermarket heads leave the cut marks in the ports, also people have chrome plated the ports on engines and gone backwards Hp and torque wise.

Practical real world testing on these things has proven that theory isnt always correct.

fair call for the surface finish of the head, but that comes into air/fuel interaction.

for the intercooler piping, i thought the idea is to get the air to the head as quick as you can.

back on topic,

whens the planned first outing for this thing?

well looks like nismo hard piping is out of the question too...

starting bidding on the auction for nismo hard piping and hks i/c piping...

i stop bidding at 160,000yen lol :) and i still got out bid

Brand new the kit is 155,000yen without tax lol, and already bought myself a hks i/c piping kit so anything more isn't worth it

edit: WOOO! auction ended at 192,000yen that is over 2k!

Interesteding makes me think the nismo hard piping kit is made for r32 and not just a r33/34 kit.

seeing as you can buy the nismo kit for 155,000 and hks kit is 35,000yen = 190,000yen brand new for both why would someone pay 192,000yen for a second hand kit lol

Edited by Kaido_RR
fair call for the surface finish of the head, but that comes into air/fuel interaction.

for the intercooler piping, i thought the idea is to get the air to the head as quick as you can.

back on topic,

whens the planned first outing for this thing?

december if everything goes well. but looks like i have a problem with the hard piping kit so will need to sort that out before the car is ready to go.

Also need to wait for my track rims and tyres to come :S so finger cross they should be here by dec

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