can anyone tell me what stock unported intake ports can flow on the rb30 SOHC cylinder head ?

i find it hard to beleive all the knowledgable ppl on here cant help me with this question?

Didnt Kyle answer this in that other thread?

Quote: Originally Posted by Wyndup Didnt Kyle answer this in that other thread? no he didnt he only mentions figures relating to ported inlet ports ! i am asking about stock inlet ports ! might be a grey area ? could answer alot of ppls question of like " do i need to run a big $$$ plenum "

i think pazzo proved this with his 10.3 or what ever!

boost often overcomes down the line flow issues quite well Some original photos have not been recovered yet.

thats some thing i dont get once a plenum is filled with compressed air is flow really an issue when it is getting forced'?

Well the smoother and more laminar the flow the less work the compressor has to do but when you are pushing sizable pressure anyway then the differential is reduced. ie. Most of the flow is within the centre of the air stream and irregularities are not as important when you have boost to spare.

still dont know the figures though or is it to much of an open question ? Some original photos have not been recovered yet.

do the numbers really matter that much or r u doing a one to one comparison with a high end item and want to know the degree of difference ?

Quote: Originally Posted by Niche do the numbers really matter that much or r u doing a one to one comparison with a high end item and want to know the degree of difference ? im aiming for 12's on std computer ! i have a ported SPP NA manifold but i have been advised to switch back to vlt manifold ! we have seen the figures n noe they flow really well ! i just want to use the most least restrictive components to allow good pwr ! i just want to remove all restrictions ! was wondering are high end plenums very beneficial while retaining stock inlet cylinder head ports ! i think i understand now thanks guys

164 @ 28"

Quote: Originally Posted by NZ VLCT 164 @ 28" Ah ha - I take it this is 164 CF/min at 28" mercury for the stock standard VLT inlet manifold complete - ie top and bottom halves and through the standard throttle body ? TIA

Quote: Originally Posted by NZ VLCT 164 @ 28" u bloody legend! Quote: Originally Posted by Niche Ah ha - I take it this is 164 CF/min at 28" mercury for the stock standard VLT inlet manifold complete - ie top and bottom halves and through the standard throttle body ? TIA mate if u read over the thread again ! im asking what stock inlet ports on the cylinder head flow ! he answered the question ! we didnt ask for flow figures of TB, or VLT inlet manifold ! we are talking about the inlet ports on a standard vlt SOHC cylinder head !

ok np, too man threads for me Some original photos have not been recovered yet.

lol