airflow in the NB
#1
2 Props,3 Dildos,& 1 Cat
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airflow in the NB
driving to north carolina with the AC on in hot weather .... the faster I go, the hotter she gets. cruising at 55-65 the temps are right around 210F. every 10 mph over means 10degF higher coolant temp.
Ambient was 87F...
note I haven't done anything about cold air intake or MUCH with airflow... I've got work to do there but I'm curious why faster = hotter.
I mean aside from the engine making more power to go faster... it's not like I was in boost or even approaching it. it was like... 15 inHg vac.
Ambient was 87F...
note I haven't done anything about cold air intake or MUCH with airflow... I've got work to do there but I'm curious why faster = hotter.
I mean aside from the engine making more power to go faster... it's not like I was in boost or even approaching it. it was like... 15 inHg vac.
#3
Same thing was happening tomy NA last summer with no turbo. Adding back in the undertray and front shroud thing helped a lot, as did removing the stupid grill that the previous owner had put on. I mentioned this to a colleague of mine in wind engineering, and he said that, in relation to wind on buildings, a screen acts more and more like a solid wall at faster wind speeds. So, in regards to a radiator, the same would hold true. The higher the speed, the more critical it is that air has no other way to go, other than through the radiator.
#4
I have the same problem. I also have sky high IAT's, because my filter is right above the radiator fan, like a old school fm kit..
I put the under tray back on, and that helped some, put a much lighter mix of anti-freeze in.. with water wetter, and a 160* t-stat.. we'll see how that does..
I still have no A/C, relay will be here this week so i can make that go.
I put the under tray back on, and that helped some, put a much lighter mix of anti-freeze in.. with water wetter, and a 160* t-stat.. we'll see how that does..
I still have no A/C, relay will be here this week so i can make that go.
#8
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12-1300 F max. runs well.
It's probably the gaps around the IC at high speed passing all the air. I tried to foam it in so air couldn't go around but I checked later and the foam was missing... air wanted by bad.
I have a makeshift undertray but it doesn't enclose the sides like the stock one. That's probably an issue too.
Ducting it is.
It's probably the gaps around the IC at high speed passing all the air. I tried to foam it in so air couldn't go around but I checked later and the foam was missing... air wanted by bad.
I have a makeshift undertray but it doesn't enclose the sides like the stock one. That's probably an issue too.
Ducting it is.
#11
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I've sorta made progress...
I ordered a 90° 4" tube and connector to mount the filter more behind the headlight.
I picked up some 3" shiny silver dryer hose. Gonna try to route this to a high pressure spot in a fender or something to get fresh air to the hole behind the headlight.
I picked up some rolls of PSA backed insulating foam weatherstripping. This will be sealing holes around the IC/AC/radiator.
I have not done anything with any of that... and I need to get some better sheet materials to make shrouds with. The stuff I got is flimsy and comes in roll form--oops. Next round will be thicker to get some rigidity. I may also form up a sweet filter box.
IDEALLY I will have a bunch of dividers/diverters that point the air only through some cooling device and not around any of them.
I ordered a 90° 4" tube and connector to mount the filter more behind the headlight.
I picked up some 3" shiny silver dryer hose. Gonna try to route this to a high pressure spot in a fender or something to get fresh air to the hole behind the headlight.
I picked up some rolls of PSA backed insulating foam weatherstripping. This will be sealing holes around the IC/AC/radiator.
I have not done anything with any of that... and I need to get some better sheet materials to make shrouds with. The stuff I got is flimsy and comes in roll form--oops. Next round will be thicker to get some rigidity. I may also form up a sweet filter box.
IDEALLY I will have a bunch of dividers/diverters that point the air only through some cooling device and not around any of them.
#13
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http://www.amazon.com/Grizzly-H3243-.../dp/B0000DD4UU
But if you use thin AL and it's pretty big, just bend it over the side of your work bench...
#15
This stuff is made for fab'ing shrouds/spoilers etc.
I've used it on numerous race cars, and on my street Miata.
I've used it on numerous race cars, and on my street Miata.