Type S intake Pipe VS ATR intake pipe

Post by **4thgenphil** » Sat Feb 04, 2012 1:42 pm

OK, not really looking to argue or anything but i don't understand, why if the type S intake is alot better than the prelude one, why was one of a similar design not used on the ATR? instead one that is similarish to the standard prelude one used ? granted it starts fatter and reduces in size to the TB but broadly speaking they are similar?
consider also the ATR was built after the first of the type S's

just a thought/observation! maybe the atr Airbox could be fited to the lude?

Post by **RattyMcClelland** » Sat Feb 04, 2012 2:11 pm

Different car and different engine bay dimensions. Maybe Honda had already compromised on design and cost already on the Accord Type R so not much left to develop the ATR intake.
But i do agree with you and have always wondered this myself. I think the main advantage for the Type S intake is the volume of air it can hold so the air supply wont run dry. But with the smaller pipe it can be restricted at max flow.

My Type-S · Post by **Carlosfandango** » Sat Feb 04, 2012 3:04 pm

Didn't they use a similar intake, to the Type-S, on the UK RedTop Preludes? So like you said ,maybe it was engine bay size restrictions.
Has the Accord got a much shorter bay that the Lude?

toyracer69 · Post by **toyracer69** » Sun Feb 05, 2012 10:16 am

Carlosfandango wrote:Didn't they use a similar intake, to the Type-S, on the UK RedTop Preludes? So like you said ,maybe it was engine bay size restrictions.
Has the Accord got a much shorter bay that the Lude?

The engine is further back than a Prelude.

Buzzonion Vtec · Post by **Buzzonion Vtec** » Sun Feb 05, 2012 3:55 pm

Simple answer - the ATR doesn't have vacuum secondaries in the intake manifold so has no need for a "dynamic chamber"

Post by **4thgenphil** » Sun Feb 05, 2012 5:18 pm

Buzzonion Vtec wrote:Simple answer - the ATR doesn't have vacuum secondaries in the intake manifold so has no need for a "dynamic chamber"

complicated answer?!

Buzzonion Vtec · Post by **Buzzonion Vtec** » Sun Feb 05, 2012 6:32 pm

4thgenphil wrote:
Buzzonion Vtec wrote:Simple answer - the ATR doesn't have vacuum secondaries in the intake manifold so has no need for a "dynamic chamber"
complicated answer?!

No

It's all to do with intake pulse tuning, progressive flow rates, IM volumes, intake velocity and transitions.
Too much to go through to get to the exact same answer as I have already posted

Post by **Donald** » Sun Feb 05, 2012 6:36 pm

Buzzonion Vtec wrote:
4thgenphil wrote:
Buzzonion Vtec wrote:Simple answer - the ATR doesn't have vacuum secondaries in the intake manifold so has no need for a "dynamic chamber"
complicated answer?!
No

It's all to do with intake pulse tuning, progressive flow rates, IM volumes, intake velocity and transitions.
Too much to go through to get to the exact same answer as I have already posted

My face when I enter a topic like this...

littlefeller · Post by **littlefeller** » Mon Feb 06, 2012 12:36 am

Duo · Post by **Duo** » Mon Feb 06, 2012 12:49 pm

Buzzonion you seem to know your onions(sorry I had to

) do you know any good places for calculators to work out flow rates based on volume, standard drag coefficients and air speeds? and maybe a good density calculator based on atmospheric pressure and aperture size? I feel the need to play with intake flows and densities on both cars but it's been so long I can't remember any of that kind of thing

need to practice and use something that likes numbers more than my brain

Chris