Vented Hood In The Rain

[Girorostar]

Hello mates,

I am planning on buying a CF vented hood to reduce some weight but not sure about it. Is it save to drive in the rain with an opening like that? It looks like the water will just poor down on the belts and alternator. My car is daily driven and i dont have a garage to park it in.

I did a search but couldnt find anything, if anyone can point me in the right direction.

Thanks.

[barraspalding]

water also comes up from underneith... and no problems there?

Is that weight saving really going to make your 'street' car any faster... 60km/h is still 60km/h.

You'd be better spending that money of a gym membership and losing weight that way (not saying your a chubsy whubsy... just that people can weigh between 70 to 120kg's)

[GTR-N1]

Just cut out some paper or cardboard templates that fit the holes > cut perspex to size > fit them in the slots on rainy days

[RBJETT]

only thing ive noticed is a slight chirp from the belts on start up after washing my car.

[StealthX]

Some of the expensive brand name bonnets have water channels that direct the water away from the vents (I.e. diverts it around them) I've seen one on a build thread here...

[performancecentral]

As long as the vents were not directly above the exhaust manifold and intake filters that it shouldn't be too much issue,

There are quite a few manufacturers that include bonnet vents from factory and some of these like the Toyota Celica vent their directly above the turbo and alternator without affecting the vehicles reliability.

if the Bearings on your alternator, power steering, and air-conditioning were subjected to lot of water you may find they would wear quicker but I doubt it's going to be that obvious.

[The Bogan]

Also watch out for water that gets into the valley where the coils are as the plugs will rust and the moisture will work its way into the boots and cause a missfire, it happened to me.

[Girorostar]

Thanks everyone for the honest replies, i was just a bit concern and didnt want to ruin my engine which i rebuilt. My plan to reduce weight for this "street" car is for when i'm ready with my new setup i can head up to the drag strips and have some fun there.

And to Mr Barraspalding, thanks for caring about my weight, but i already have a gym membership pass and i go there 4 times a week. Next time if you care so much why not ask first instead of being an ass...

water also comes up from underneith... and no problems there?

Is that weight saving really going to make your 'street' car any faster... 60km/h is still 60km/h.

You'd be better spending that money of a gym membership and losing weight that way (not saying your a chubsy whubsy... just that people can weigh between 70 to 120kg's)

[KING87]

I've had 3 different types of vented bonnets the 1st was good had the one vent which was centered over the top of the gap between the radiator and front of the engine. I never had any issues with water with this one.

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I then changed to a CF Z-Tune style one and the quality was a bit average and had it fitted to the car for a day or two in the panel shop. After the car was outside and in the rain for a little there was water in the engine bay even with the 'tray' fitted (when i opened the bonnet the water collected in the tray spilt in the engine bay anyways)

I then got the Nismo carbon R Tune one which has the rain channels and no water gets into the bay at all as long as you dont point the hose directly in there. The quality of this is unreal..

"

This is only my expirence with them and im sure there are others who have never had any dramas with any vented bonnet. But living up here in Mackay the rain can be quite tropical at times coming in thick and fast lol..

Cheers

Kingy

[Girorostar]

Thanks for the reply King87, the one i saw here is exactly like the first one you have there. The opening is up front where the radiator is. Gonna see if can spot the nismo hood in the US to order.

[ssxRicho]

same experience as king.

if you can find one with the venting forward of the valley cover (coil and spark cover) you will be fine.

but if the venting is behind the cover you will get water in there when its raining and the car is stationary, while its moving you

will be fine.

The water falls between the engine and the radiator on this one.

water falls on front of the cover on this one while the car is stationary.

Edit...both of those are 3rd of the weight of the oem bonnet.

[Charles89]

I've had 3 different types of vented bonnets the 1st was good had the one vent which was centered over the top of the gap between the radiator and front of the engine. I never had any issues with water with this one.

">

I then changed to a CF Z-Tune style one and the quality was a bit average and had it fitted to the car for a day or two in the panel shop. After the car was outside and in the rain for a little there was water in the engine bay even with the 'tray' fitted (when i opened the bonnet the water collected in the tray spilt in the engine bay anyways)

I then got the Nismo carbon R Tune one which has the rain channels and no water gets into the bay at all as long as you dont point the hose directly in there. The quality of this is unreal..

"

This is only my expirence with them and im sure there are others who have never had any dramas with any vented bonnet. But living up here in Mackay the rain can be quite tropical at times coming in thick and fast lol..

Cheers

Kingy

If don't mind me asking, where did you get the z tune style from and how much did the r tune set you back?

Thanks!!

[mattyneweraimports]

they dont make a 33 GT-R one at Nismo

i run the genuine R Tune Nismo Omori bonnet on the 34. It does as stated have rain channels under the bonnet and is Dry Carbon

The best one for the 33 is the design by Top Secret imo, it works alot better, than the copies of the z tune for the "33"

[scotty boi]

This is my bonnet got it from monkey warehouse really good fit and water drops in front of engine bay no problems. Edited January 6, 2011 by scotty boi

[J34]

I know someone who had the same as the above but the water ended up stuffing the bearings on the pulley for the Air Conditioning. Shouldn't be much of a issue if the cars kept undercover.