This intake looks good
Discussion
Found it in the classified section
http://www.pistonheads.com/classifieds/parts-and-p...
Nice big cone air filter
http://www.pistonheads.com/classifieds/parts-and-p...
Nice big cone air filter
https://www.youtube.com/watch?v=gCi2yo4UqPI
https://www.youtube.com/watch?v=PAIxeQUSg-Q
https://www.youtube.com/watch?v=PAIxeQUSg-Q
Edited by MyM8V8 on Wednesday 22 July 10:12
MyM8V8 said:
https://www.youtube.com/watch?v=gCi2yo4UqPI
https://www.youtube.com/watch?v=PAIxeQUSg-Q
https://www.youtube.com/watch?v=PAIxeQUSg-Q
Edited by MyM8V8 on Wednesday 22 July 10:12
Very enjoyable watch and certainly confirms everyone's fears...Either way, it's a nice intake so I'm sure someone will be happy - when I've had a CAI in the past, it's usually been for the noise rather than power.
KMud said:
Is that a plastic or alloy pipe?
Alloy. I guess your next comment is about heat-soak?If so, I'm not sure it is a problem. Good conductors work both ways, so as well as transferring the heat quickly, it will also lose the heat just as fast. If you had a plastic pipe, then whilst it may take longer for the heat to transfer from the outside to the in, that pipe would stay hot for a lot longer than an alloy one.
ARAF said:
No when you've got cold air coming through it, only when the engine is off?
I should have written that better! When sat in traffic/still it heats up really quick, so hot it is difficult to hold you hand on it.A 15-20 minute drive to my work, leisurely at 50-60mph and when i arrive its still mega hot!
A long drive or no traffic/queuing and it is fine
ARAF said:
Alloy. I guess your next comment is about heat-soak?
If so, I'm not sure it is a problem. Good conductors work both ways, so as well as transferring the heat quickly, it will also lose the heat just as fast. If you had a plastic pipe, then whilst it may take longer for the heat to transfer from the outside to the in, that pipe would stay hot for a lot longer than an alloy one.
I'm not sure either...how much heat can the air pick up as it travels down the inside of a hot pipe? More thermal mass in an alloy pipe I would have thought, so potential to accrue more heat to dump. My OTR certainly soaks being sat on the rad, but also clears quickly.If so, I'm not sure it is a problem. Good conductors work both ways, so as well as transferring the heat quickly, it will also lose the heat just as fast. If you had a plastic pipe, then whilst it may take longer for the heat to transfer from the outside to the in, that pipe would stay hot for a lot longer than an alloy one.
If I were going for a K&N type setup I think I'd take the cheaper black plastic one. I think I'd want to paint the alloy pipe black at least to make it a more efficient radiator...although that would also make it a more efficient absorber. I like the box on that design, assuming it has a cold air feed from below.
KMud said:
ARAF said:
Alloy. I guess your next comment is about heat-soak?
If so, I'm not sure it is a problem. Good conductors work both ways, so as well as transferring the heat quickly, it will also lose the heat just as fast. If you had a plastic pipe, then whilst it may take longer for the heat to transfer from the outside to the in, that pipe would stay hot for a lot longer than an alloy one.
I'm not sure either...how much heat can the air pick up as it travels down the inside of a hot pipe? More thermal mass in an alloy pipe I would have thought, so potential to accrue more heat to dump. My OTR certainly soaks being sat on the rad, but also clears quickly.If so, I'm not sure it is a problem. Good conductors work both ways, so as well as transferring the heat quickly, it will also lose the heat just as fast. If you had a plastic pipe, then whilst it may take longer for the heat to transfer from the outside to the in, that pipe would stay hot for a lot longer than an alloy one.
If I were going for a K&N type setup I think I'd take the cheaper black plastic one. I think I'd want to paint the alloy pipe black at least to make it a more efficient radiator...although that would also make it a more efficient absorber. I like the box on that design, assuming it has a cold air feed from below.
As for painting black, doesn't black absorbe, and silver reflect? I think I'd want silver, to reflect as much of the engine bay heat back, as you could.
ARAF said:
I'm not sure either. Computers use aluminium as heat sinks, because they lose heat quickly. If an aluminium pipe had cold air coming through, then it would soon also cool.
As for painting black, doesn't black soak, and silver reflect? I think I'd want silver, to reflect as much of the engine bay heat back, as you could.
Black both absorbs and radiates more. Silver on the inside and black on the outside? As for painting black, doesn't black soak, and silver reflect? I think I'd want silver, to reflect as much of the engine bay heat back, as you could.
Aluminium is nearly as good a conductor as copper, that's why computers use them. For a radiator it's an easy choice - paint it black for improved performance. More MCM mythbusting...
Watched the video's interesting stuff. However it does somewhat depend on the car in question and if it has a restricted intake.
I have a 635csi and designed my own intake which effectively moved the filter from oem location on the exhaust manifold to the back of the headlight. Plus increased the intake pipe size from 60mm to 72mm.
Before and after dyno runs resulted in an increase in BHP from 207-222bhp.
I have sent Garry a note as I like a nice intake.
I have a 635csi and designed my own intake which effectively moved the filter from oem location on the exhaust manifold to the back of the headlight. Plus increased the intake pipe size from 60mm to 72mm.
Before and after dyno runs resulted in an increase in BHP from 207-222bhp.
I have sent Garry a note as I like a nice intake.
KMud said:
I'm not sure either...how much heat can the air pick up as it travels down the inside of a hot pipe? More thermal mass in an alloy pipe I would have thought, so potential to accrue more heat to dump.
I'm no thermodynamicist, but they stopped making window frames out of aluminium years ago in favour of upvc.Lil'RedGTO said:
Looks like a Cold Air Inductions intake. An American firm. They cost about £200 new, but you need to get it shipped over.
Yes. Its a fair price and I did have one on my shopping list.Like I've said before on here. Filters and filter box manufacturers are big on hype but always lack hard evidence to back it up!
Those videos may, or may not, be relevant to our own cars (being much bigger in volumes), but at least it shows someone is researching the numbers in the real world.
Rich actually installed the Rotofab (Cold Air?) unit in his Gen F Ute and guess what, the IATs did NOT improve over stock. I'm waiting for some more numbers from him on that.
Edited by MyM8V8 on Thursday 23 July 18:48
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