Jump to content
SAU Community

Ductwork

Overcenter

By Overcenter,
in Fabrication

 Share

Recommended Posts

Overcenter Rookie

Overcenter

Posted
Posted

Here is some simple fab I did on my personal S13. The ductwork is highly effective in keeping temps down on the street and the track. The shape of the duct help speeds up the air as it passes thru the core face. By sealing up between the IC and the radiator my water temp average about 175-185F. It's a good addition to any car that is in a hot climate. Good job on the fab forum, its nice to have a place to come less the typical interweb drama.

DSCN0109_full.jpg

DSCN0110_full.jpg

DSCN0113_full.jpg

DSCN0198_full.jpg

This is a cheap and easy project that could be adapted to any car. The duct is made out of 6061 T6 .063" thick. I bent the curve in the aluminum by pulling it around a parking pole.

Link to comment
https://www.sau.com.au/forums/topic/156651-ductwork/
Share on other sites
Craved Grand Master

Craved

Posted
Posted

thanks Kevin, that look a treat and will be doing something similar to my car when the new motor and IC go in.

have you any shots with the bar attached to the car?

and regarding the seal between the IC and radiator - how did you run the mounting to give an idea to the rest of us :)

Link to comment
https://www.sau.com.au/forums/topic/156651-ductwork/#findComment-2911393
Share on other sites
Hardman69 Collaborator

Hardman69

Posted
Posted

Noice1 Craved ! I think I'll have to put a lil' panel between the very bottom of my I/C and the bottom of the radiator, to stop air bleeding out between the 2 cores.

On the 37deg. trackday I did at winton, 3 hot laps in a row saw the water-temp up around 110Celsius plus ! ! !

Link to comment
https://www.sau.com.au/forums/topic/156651-ductwork/#findComment-2914155
Share on other sites
  • 2 weeks later...
  • 2 weeks later...
Hardman69 Collaborator

Hardman69

Posted
Posted
just a side thought, wouldnt you be cutting off fresh air to the radiator as well? or do you think the air passed through the cooler is sufficient..

It wasn't really any better or worse. I was worried that air that'd been crammed through the FMI/C by the front bumper intake, would bleed out the bottom of the gap between I/C and Radiator - into the lower-pressure region behind the front bumper.

The PowerFC showed a peak water Temp of 116deg.C this time . . . . 8-O

Link to comment
https://www.sau.com.au/forums/topic/156651-ductwork/#findComment-2979990
Share on other sites
Craved Grand Master

Craved

Posted
Posted
It wasn't really any better or worse. I was worried that air that'd been crammed through the FMI/C by the front bumper intake, would bleed out the bottom of the gap between I/C and Radiator - into the lower-pressure region behind the front bumper.

The PowerFC showed a peak water Temp of 116deg.C this time . . . . 8-O

116 degrees is way too hot - was this at a track day? looks like you need a radiator flush or a bigger alloy one

Link to comment
https://www.sau.com.au/forums/topic/156651-ductwork/#findComment-2981603
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Latest Posts

    • TurboTapin
      Lets play a game - What is causing my oil consumption?

      By TurboTapin · Posted

      Hey, like MBS206 mentioned; I dropped off my short block and rotating assembly Monday. With a quick verification, he believes he can clear it up with just a hone and new rings but he will confirm once the rotating assembly is out. If I were you, I would either go stroker or just replace the block if it does need to be bored over to next size. Block is cheaper then forged pistons. 
    • drifter17a
      Coc or nox of nissan skyline

      By drifter17a · Posted

      live in the UK, and London has introduced a Low Emission Zone (LEZ) that requires individuals to pay £13 if their car doesn’t meet the required emissions standards.   The standard specifies that NOx emissions must be less than 0.08 g/km (i.e., the vehicle must meet Euro 4 standards or better, which generally results in NOx levels of around 0.08 grams per kilometer).   I reached out to Nissan UK, and they advised me to contact Nissan Japan directly. Does anyone have contact details for Nissan Japan or any certifications of conformity that show the emission details or NOx levels for the RB25DET engine?   Any guidance would be greatly appreciated.
    • Butters
      Exhaust silencers/varex exhausts

      By Butters · Posted

      these guys recommended to me and supplied custom 4 inch mufflers, couldn't be happier. They will spec a muffler to your preferred level of sound and know RB's well.  https://spmufflers.com.au/
    • CRSKmD
      Import insurance in 2025

      By CRSKmD · Posted

      Yeah this used to happen to me every year and a quick call would at least raise the agreed value back up / reduce the premium, but usually both.    That said for the first time on the renewal this year our agreed values went up or stayed the same over the fleet and the premium came down so that was a nice surprise. 
    • MBS206
      Import insurance in 2025

      By MBS206 · Posted

      I don't even go that hard core. I just say "how do you expect me to stay, when you increase my premium, and reduce the value of the car?"   Then play a game of shut the f**k up. Most of the time it's a computer that did the adjustment, and the people will happily change it around for you.
×
×
  • Create New...