K&N Typhoon CAI

[NoDakZ/28]

Originally Posted by highrevving

Catch can needed? I'm not running one.

Thanks.

Needed...probably not but up in the north and with short drives to work condensation doesn't always get burned and would rather catch it. Ive always ran them on every car I've had, there are a few companies that make them for the z. I just snagged one from MM on their Black Friday deal.

[Coz3z3]

Originally Posted by NoDakZ/28

For sure, well I'll think more about it. I am running a MM catch can so oil in the intake "should never" happen but who knows. Thanks for all the feedback.

Yeah that's what I have too. I'm not too knowledgeable in the clean side though with the Dry Sump. I just think, GM put that little catch can on the intake tube for a reason. Getting rid of it could add some oil into the intake tube, which is where I thought adding another one into that clean side might be helpful

[George-CZ]

I have it too. But I honestly don't think you can tell the difference between a K&N, BBK, Z/28 on the same car from behind the wheel.

[void_kp]

about those CAI... the stock "tube" that connects the filter with the air plenum is rubber... there's a reason why they don't use metal, it's not because of cost... it's because the engine bay gets hot and metal intake gets warm , which will heat the air your engine intakes...
so while the metal intake (such as in 2nd post picture) is cool to see, from a performance perspective it's worse than the stock one

[George-CZ]

Originally Posted by void_kp

about those CAI... the stock "tube" that connects the filter with the air plenum is rubber... there's a reason why they don't use metal, it's not because of cost... it's because the engine bay gets hot and metal intake gets warm , which will heat the air your engine intakes...
so while the metal intake (such as in 2nd post picture) is cool to see, from a performance perspective it's worse than the stock one

With all due respect...
When I imagine what speed and what volume flows through that piece of pipe in one second, I think the temperature difference plastic/iron would be barely measurable and on the dyno the difference would be lost in the measurement tolerance.

[0stones0]

Originally Posted by George-CZ

With all due respect...
When I imagine what speed and what volume flows through that piece of pipe in one second, I think the temperature difference plastic/iron would be barely measurable and on the dyno the difference would be lost in the measurement tolerance.

+1

[void_kp]

well... it really depends. on high revving engines even a few degrees of air temp make a difference in horsepower (air less dense). when on a track the engine bay becomes VERY hot. this is the reason why it is not worth for the manufacturer to create a metal intake, even when they are pursuing max hp.
But I agree with you, it's a minor difference... on the same magnitude of changing air filter.

[Little Walter]

Originally Posted by void_kp

about those CAI... the stock "tube" that connects the filter with the air plenum is rubber... there's a reason why they don't use metal, it's not because of cost... it's because the engine bay gets hot and metal intake gets warm , which will heat the air your engine intakes...
so while the metal intake (such as in 2nd post picture) is cool to see, from a performance perspective it's worse than the stock one

+1

[George-CZ]

Originally Posted by void_kp

well... it really depends. on high revving engines even a few degrees of air temp make a difference in horsepower (air less dense). when on a track the engine bay becomes VERY hot. this is the reason why it is not worth for the manufacturer to create a metal intake, even when they are pursuing max hp.
But I agree with you, it's a minor difference... on the same magnitude of changing air filter.

I agree with you that cold air = denser air and better for the power.
So I gather from your post that we are talking about WOT. So the maximum speed of the intake air.



There, I think that the temperature of the pipe adapts to the intake air rather than the intake air to the temperature of the intake pipe.
In order for appreciable heating to occur, it would have to be a cast iron pipe and wrapped 3 times around the engine.



In my opinion, it is more important to direct the fresh-cool cold air to the air filter intake than the material it is made of.

The Phastek Air Intake Scoop comes to mind





But definitely don't take my post as an argument in a bad way.
We're only talking about cars here.
Cheers

[George-CZ]

In addition, I think that it is easier to manufacture plastic parts in a factory, of which the machine spits out dozens in a moment, than to deal with bending a metal pipe and then its surface treatment

[void_kp]

But definitely don't take my post as an argument in a bad way.
We're only talking about cars here.

totally.

In addition, I think that it is easier to manufacture plastic parts in a factory, of which the machine spits out dozens in a moment, than to deal with bending a metal pipe and then its surface treatment

true, it also is flexible which allows for more reliability as it will cope with engine moving here and there... I wonder if the diameter of the Z/28 one is the same as other non LS7 motors, because if they had to create a new molding for it...

[1JEWLDSSRS]

Originally Posted by George-CZ

With all due respect...
When I imagine what speed and what volume flows through that piece of pipe in one second, I think the temperature difference plastic/iron would be barely measurable and on the dyno the difference would be lost in the measurement tolerance.

+2. When I'm running mine hard doing WOT pulls, and watching my IAT's, they are around 10 degrees or above ambient outside temps. So I'm guessing while the engine is sucking in such large volumes of air it doesn't have time to get "heated up". Even if you are cruising at speed. So in my book, no harm no foul. Plus the fact that the tube has a smooth inside curve to it and not any of the convuluted ridges in the bend to "disrupt" the smooth flow. Gotta be good for something.

[George-CZ]

Originally Posted by 1JEWLDSSRS

+2. When I'm running mine hard doing WOT pulls, and watching my IAT's, they are around 10 degrees or above ambient outside temps. So I'm guessing while the engine is sucking in such large volumes of air it doesn't have time to get "heated up". Even if you are cruising at speed. So in my book, no harm no foul. Plus the fact that the tube has a smooth inside curve to it and not any of the convuluted ridges in the bend to "disrupt" the smooth flow. Gotta be good for something.

it is so.
When I compare it to my 78 Type LT which has an open filter right in the middle of a hot engine where the access of cold air to the intake tract is much worse and the cars are almost comparable in terms of performance where the LS3 loses a bit of breath going uphill, I wonder if these are not a bit of unnecessary concerns

[NoDakZ/28]

I went ahead and snatched up the intake, too good of a deal to pass up. I'll do some testing this spring and report back to see if it is an upgrade. IMO just the carbon heat shield and ditching the factory rubber elbow is worth it, but to each their own. Now just to get a ported TB, install my longtubes and get my exhaust made, should wake up the ol' 427 pretty good. Rock on friends .