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Underbody braces, turbos and more!

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PostPosted: Sun Jul 30, 2006 3:09 am 
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put together a nice cold air intake using some extra bits of junk I had lying around the shop.
materials used:
3 - 2.75" hose clamps (napa)
1 - 2.5" mandrel u-bend (summit racing)
1 - 2.5" coupler (ebay)
1 - 2.5" cone filter (ebay) (would have preferred a $20 foam unifilter from bent-bike)

the stock setup is very restrictive and looks like poo :P
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easy enough to get rid of.

I wanted the space & lots of airflow, so I trimmed back the plate the resonation box was mounted to.
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next up, chop the mandrel bend in half
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here's the initial test fitting, I had to shorten the pipe a bit and I opened the top of the hole through the fender so I could angle the piping down through the hole a bit (see the red line).
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and here's the end result with some industrial black rust-o-leum (courtesy of J,V,&S) and everything clamped in place.
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from inside the fender.
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looking through the front bumper.
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the air-saw is your friend :lol:
lots of intake noise now under full-throttle/load, but no change at idle, not the same burble at idle you get from the gti dohc 16v with a similar setup.
you could replace the stock rubber hose, but why bother ?

I did make sure to use a bit of K&N filter oil on the ebay cotton filter, unlike the gt/gti, there's no hotwire maf to contaminate. I would recommend going to your local motorcycle shop and buying a 2.5" foam uni-filter instead of the cheap cotton gauze style, they work much better and it'll cost you about the same. You could also weld the two bends back together once you find the right angle instead of using a coupler.

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PostPosted: Tue Aug 08, 2006 7:08 am 
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Nice job; looks good! 8)

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PostPosted: Sun Aug 13, 2006 12:19 am 
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Location: Montreal, Quebec, Canada
a few noob questions:
Is the stock setup on a base fly/metro/swift 1L 3C (95+) using an air intake from the fender with a filter? If so, whats a good replacement for it?
Why do they/you put the air filter down inside the fender as opposed to under the hood?


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PostPosted: Sun Aug 13, 2006 1:41 am 
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n1tr0 wrote:
you could replace the stock rubber hose, but why bother ?


To make it look like you didn't just put a hacked piece of mandrel bend in there and call it a day :-P. Looks good though...hows the seat dyno?

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PostPosted: Sun Aug 13, 2006 2:01 am 
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Shouldnt you have left the piece of steel the air box mounted to to help deflect crap flying off your tire away from the filter? what happens when it rains? are you going to pull over and wait for the roads to dry up?

Also wouldnt that piece have caused an even higher pressure area with all the air rushing through the bumper and hitting the 'wall' it would have created?

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PostPosted: Sun Aug 13, 2006 11:49 am 
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- having the filter in the engine bay makes it a warm or hot air intake, not good for performance or preventing pinging.
- the sheet metal I cut out is what the stock resonation box mounts to, the problem with it is that it's too close to the fender liner (which I retained) to fit a filter in there.
- no, there is not a problem with sucking up water on rainy days, the intake would literally have to be submerged in water to hydrolock the engine and a few rain droplets getting through are only going to cool the charge further.
- seat of the pants dyno, I seem to be getting an extra 5mph out of one of the uphill onramps I use and the intake sound under WOT is just like my old swift gt (with a similar hot intake). you're never going to make these cars very 'fast', but you can certainly make them 'fun' ! this bumped the driving over a notch from econo-car towards go-cart.

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PostPosted: Sun Aug 13, 2006 1:01 pm 
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I wasnt worried about it sucking up water but a little moisture with road dust dirt and grime and youve got a really dirty filter.

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PostPosted: Sun Aug 13, 2006 1:02 pm 
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Location: Bradford, Ontario
Hey nitro why dont you buy an mk4 and gve us a write up on making a CAI on it :(

no but seriously any ideas? should i just use the stock airbox and remove the filer, pipe a cai and put a filter on the tip of the pipe?


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PostPosted: Sun Aug 13, 2006 1:28 pm 
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hum........ this writeup is for a mk4/5? ;)

His engine is a 1.3 16 valves (for the 1998 +), but the setup is pretty much the same if you have a 1.0L or a 1.3 8 valves... on a 1.0L just follow the path of the air intake, you'll see it goes under the fender, just remove the big black box (it's a "silencer", lower the quantity of air that goes inside the intake) and you will improve the air flow by a lot. You could just do the same as Nitro and change your system to have a cone filter at the end, all mks have pretty much the same system (just the turbo that is different, not sure for the GTI)

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PostPosted: Mon Aug 14, 2006 1:18 am 
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MatLax wrote:
hum........ this writeup is for a mk4/5? ;)

His engine is a 1.3 16 valves (for the 1998 +), but the setup is pretty much the same if you have a 1.0L or a 1.3 8 valves...

actually the write is just for the mk5's 16v setup ... most of the g10's and g13 2-valve/cyl engines used a tbi intake and would be a much bigger hassle to mod.
if you want to do a cold air intake on one of them, look at using the pressure hat for the turbo conversions and running your tubing from there.

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PostPosted: Mon Aug 14, 2006 7:27 am 
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where would i find said pressure hat?

*edit* nevermind, Searched it.


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PostPosted: Thu Aug 17, 2006 9:30 pm 
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I have found out that if you use a larger intake pipe than 1 3/4" you will lose power. I had a CAI similar to N1tros on my old MKV, except I cut some stuff an used a piece of silicone hose to get between the filter an engine.

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PostPosted: Fri Aug 03, 2007 1:34 pm 
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I'm just trying to find the rubber part because I noticed a crack in it yesterday. :? That MKIV/MKV intake looks sweet!


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PostPosted: Fri Aug 03, 2007 1:38 pm 
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metropwr where did u get that bumper? I want one for my 4 door lsi


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PostPosted: Sun Aug 05, 2007 6:38 am 
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rj2k1metrolsi wrote:
metropwr where did u get that bumper? I want one for my 4 door lsi

Posted: Thu Aug 17, 2006 7:30 pm
It's 1 year old post. Send him a private message & you will get an answer.

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PostPosted: Sun Aug 05, 2007 10:43 am 
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IIRC the bumper was custom made from that of a Hyundai Accent.

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PostPosted: Sat Nov 17, 2007 11:53 pm 
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nice job man


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PostPosted: Thu Apr 03, 2008 6:57 pm 
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What do you do with the MAF sensor? On my 89 sprint turbo it is mounted basically on top of the airfilter box. I cant figure out how I am going to put a CAI in it. Is it even worth it?

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PostPosted: Tue Aug 05, 2008 12:58 am 
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jba205 wrote:
What do you do with the MAF sensor? On my 89 sprint turbo it is mounted basically on top of the airfilter box. I cant figure out how I am going to put a CAI in it. Is it even worth it?

wrong section, check out the mk1/2 turbo section for some intake ideas.
viewforum.php?f=32
essentially if you turn the maf around & draw air from the back of the engine near the firewall, it's a pretty good source for cooler air.
look at some of the pictures posted by t3 ragtop, he's pretty much got it figured out.
http://memimage.cardomain.com/member_im ... 5_full.jpg

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PostPosted: Sat Aug 16, 2008 7:14 pm 
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here's mine, it's the stage III cold air intake from suzuki RD.


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PostPosted: Wed Sep 24, 2008 2:39 pm 
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wat about backpressure on your motor??? would it fuck up your valves?


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PostPosted: Thu Sep 25, 2008 8:47 am 
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no, theres no worries with doin these. ive had mine on for almost 2 years and no a single problem.

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PostPosted: Thu Dec 03, 2015 3:36 pm 
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Does anybody have the pictures of a similar install or has some links for the parts?

Thanks.


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