Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Brakes & Suspension (http://www.the370z.com/brakes-suspension/)
-   -   Making Nismo ducts (http://www.the370z.com/brakes-suspension/58366-making-nismo-ducts.html)

Rusty 07-29-2012 09:56 PM
Quote:
Originally Posted by djtodd (Post 1844296)
Yeah, what I was thinking was to go from the 4" opening to 2x3" outlets. 3" duct is rather easily acquired, and you could close one off if you didnt care to route 2 ducts to the rotor. Personally, I would rather have more airflow than less.

I made a rough mockup earlier today, but I'm just going to have to break down and cut the holes to get the angle just right.

Also, how to the oem ducts mount? I was thinking of a plate on the inside of the bumper. That way, I could make some studs into the duct that would go through the bumper and plate, secured by lock-nut or similar.
The way they mount is a bolt with a washer or pop-rivet in each corner. That's it. Nothing behind the bumper but a washer and nut. You have to be careful. These things are thin!

Rusty 07-29-2012 09:58 PM
Quote:
Originally Posted by Isamu (Post 1844382)
as soon as I acquire a set, I will give everyone a price, and turn around time
I'll text you tomorrow afternoon. After I get up from sleeping. OK? :D

ScGRaceR 07-29-2012 09:59 PM
can someone post a link to the oem ones? sorta confussed

djtodd 07-29-2012 10:13 PM
Don't have a direct link. They have been discussed on the forums. Its the same duct inlets that come on the 370z RC. They fit into the nismo front fascia, but require cutting. They are also redunculously expensive, which is why various people have been discussion frp alternatives.

I'll try to put up some pictures tomorrow of what I have so far. I'm pretty pleased with them, and total material cost will be...maybe $20. That's for the inlets. Still need to buy hoses and mounting hardware, but that is also a fairly trivial cost.

DarkJak 07-29-2012 11:05 PM
WOW $20? Anything less than $100 and people will be jumping on these. Looking forward to pics.

Isamu 07-29-2012 11:33 PM
Quote:
Originally Posted by DarkJak (Post 1844604)
WOW $20? Anything less than $100 and people will be jumping on these. Looking forward to pics.
they won't be 20 bucks... I would venture to say 300-400 for a SET, would be a reasonable price..

Rusty 07-30-2012 12:24 AM
Quote:
Originally Posted by djtodd (Post 1844547)
Don't have a direct link. They have been discussed on the forums. Its the same duct inlets that come on the 370z RC. They fit into the nismo front fascia, but require cutting. They are also redunculously expensive, which is why various people have been discussion frp alternatives.

I'll try to put up some pictures tomorrow of what I have so far. I'm pretty pleased with them, and total material cost will be...maybe $20. That's for the inlets. Still need to buy hoses and mounting hardware, but that is also a fairly trivial cost.
Page 5 of my journal is a couple of pictures of them sitting on my work bench. :D Click on the link in my sign.

takjak2 07-30-2012 07:37 PM
In for ducts!

ww77 07-30-2012 11:57 PM
In here.

Rusty 07-31-2012 12:53 AM
8 Attachment(s)
Here's the factory Nismo brake ducts that list fir $612.00 each. Also a 4" to 2" reducer that I have to machine so that it slides inside of the duct to shorten the overall length of it.

ChrisSlicks 07-31-2012 06:38 AM
4" duct is pretty massive, 4x the air flow vs 2" duct. If you want to make the most of it you could do a 4" to 2x 3" splitter and produce an alternate hub flange that accepts 2x3" (hardcore) or direct one hose to cool the brake caliper.

Teams that run multiple brake ducts to the rotor usually just block one off if they are running at a track that isn't that demanding on brakes in order to get the temperatures into the ideal zone.

Dwnshift 07-31-2012 06:59 AM
We run 2 ..3" off of the 4"
Both direct airflow to the front brakes.

ChrisSlicks 07-31-2012 07:15 AM
Quote:
Originally Posted by Dwnshift (Post 1846538)
We run 2 ..3" off of the 4"
Both direct airflow to the front brakes.
Like I said ... hardcore ;)

takjak2 07-31-2012 03:44 PM
Could use one of these Y-Connector Dust Collection Fitting - Rockler Woodworking Tools
and two of these per side Hose Reducers - Rockler Woodworking Tools
I think there's plenty of space.

It's a few extra parts and not a perfect Y split, but pre-made plastic that's cheap.

djtodd 07-31-2012 03:52 PM
I made mine out of fiberglass, using some pvc as templates. Turned out well for 30 minutes work.


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