Lower Radiator Air Deflector

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SABLT194
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Lower Radiator Air Deflector

Post by SABLT194 »

Anybody working on a Repop Lower Air Deflector? Aren't they all bent from curbs, ground hogs, etc?

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AC77
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Re: Lower Radiator Air Deflector

Post by AC77 »

I'd be on for one. I know mine is bent, but from coyotes mostly.
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spl310
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Re: Lower Radiator Air Deflector

Post by spl310 »

Rallye still has some NOS ones.
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JT68
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Re: Lower Radiator Air Deflector

Post by JT68 »

I could make these pretty easily., You guys really want one? Plenty of air goes right through the grill at speed, and the scoop does nothing when stationary??? I used to throw them away since they are annoying when working below///
Last edited by JT68 on Sun Jul 15, 2018 7:18 pm, edited 2 times in total.
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fj20spl311
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Re: Lower Radiator Air Deflector

Post by fj20spl311 »

JT68 wrote:
Sun Jul 15, 2018 12:39 pm
I could make these pretty easily., You guys really want one? At speed, Plenty of air goes right through the grill at speed
IMHO, if you make them, I would like to see the Oil Cooler air deflector also



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AC77
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Re: Lower Radiator Air Deflector

Post by AC77 »

JT68 wrote:
Sun Jul 15, 2018 12:39 pm
I could make these pretty easily., You guys really want one? Plenty of air goes right through the grill at speed, and the scoop does nothing when stationary??? I used to throw them away since the are annoying when working below///
So in your opinion the current airflow is adequate?
Adam C
1967 Datsun Roadster 1600, "Ivy" Registry | Photos
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Re: Lower Radiator Air Deflector

Post by JT68 »

I would think so. Huge amounts of air come through that grill opening. Personally, I have never found a need for that deflector if the radiator is in good shape. IMHO
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Re: Lower Radiator Air Deflector

Post by ppeters914 »

IIRC, someone made one from a snow shovel.
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CSP311
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Re: Lower Radiator Air Deflector

Post by CSP311 »

For me (not that I fully know), Nissan designed this part to be used in conjunction with the fan and the shroud, so it has a part to play. They knew what they were doing. If the roadster is anything like a Datsun Z, the area in front of the grille/bumper is a low pressure air area. (the Z has an deflector, and that helps with the cooling). The air deflector may have more of a job sorting the air-flow going under the car...
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Re: Lower Radiator Air Deflector

Post by JT68 »

I think it is safe to say the intent was to direct air to the radiator, not for body air effects/aerodynamics. Also I’m quite sure massive amounts of air flow right through the grill-no doubt whatsoever.
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Re: Lower Radiator Air Deflect

Post by JT68 »

My guess is someone in the colder climates has ZERO need for that scoop. If you drive long distances in the desert, maybe it could help you. One of the snowbirds might send you a scoop for free?? I typically throw them away/ there is no need for one in Ga., certain of that.
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Re: Lower Radiator Air Deflector

Post by peeeter »

anyone know what the bolt size is for mounting these? I have on but im missing the bolt.
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Re: Lower Radiator Air Deflector

Post by JT68 »

1/4 SAE (1/4-28)
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Re: Lower Radiator Air Deflector

Post by bobd »

I have a Champion radiator in the SR20. It's pretty hot right now and I find no difference with or without the deflector.
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