Golf III carbon fiber build (SQ car)

[Haakon]

Hey!

Been working on this car for a while, bought it last summer as a daily beater until my other car project was fixed and built (thread in that car here: http://www.stevemeadedesigns.com/board/topic/120985-vw-lupo-sold-it-to-the-dd-distributor-now-a-democar-2x18/ , but as it turned out I sold that car, so then I started on this instead.

I've now on my third configuration on components in this car, so I'll skip the first parts since they no longer apply for anything current.

But first of all I thought I'd show you what has been done to the car itself apart from the stereo.

When I got it, it more or less looked like this:

Not exactly a showstopper Had no real drive to do anything with it either in the start as this was a $800 car meant to get me to and from work while the other car was being done. But that changed...

So after fixing rust and dents, this list of things were bought earlier this year:

Wheels: Rotiform NUE 8x17

Tires: Yokohama S-Drive 195/40-17

Wrap vinyl: 3M 1080 matte blue metallic

Hella Colour Magic blue taillights

Badgeless grill

VR6 lip

New in box Inpro blue front indicators

[genesis]

nice!

[Haakon]

Long story short, this is how it looks now:

[Haakon]

The system now consists of these components.

Pioneer DEX-P99RS head unit

Focal FPS 4.160 4-channel amp

Sony XM2000R 2-channel amp

TangBand W3-1878 fullrange drivers

Focal Utopia 6w2be used for midbass

Focal Utopia 13WS 5" subwoofer. 4 of these

Starting at the front:

I went down to the machining workshop where a buddy works, with a drawing of an adapter to fit the 93mm diameter Tangband fullrange drivers in a 97mm hole. Needed the adapter to have a 75mm cutout for the driver, 100mm diameter in total with a 3,5mm countersink of 93mm diameter to flushmount the driver.

He decided that POM plastic was a suitable material to use, so we loaded a 100mm bolt in the bandsaw to make a suitable workpiece:


Into the lathe with it, drilled a hole right through to start it off:


After a bit of machining, this was the result, correct outer and inner diameter, with countersunk mounting for the driver:


Cut it down to 8mm in height, and testfitted it in the car. Fit just right

[Kevin M]

MMore please. Those focals are amazing drivers.

[Haakon]

With the speaker adapters (extremely) securely bonded to the dashboard permanently, I did realize that maybe drilling holes for the screws BEFORE bonding it to the car would be a great solution! Sadly not the one I chose.. Pretty tight when the windshield is in the way of the drill But after buying a 90 degree adapter for my drill it became much easier

Also, POM is a fantastic material to cut and drill in! So with the driver laid in the adapter it was pretty easy to predrill holes for the screws.


Took some silent coat and formed it into a gasket around the mounting ring:


One thing I always do (wrong), is to have the finishing material (carpet, suede etc) twist itself when predrilling holes in the MDF underneath. So this time I glued suede on the top of the box, cut out the excess over the speaker holes and placed the driver in the hole. Then I marked up where the holes would be drilled with a marker on the suede. And removed the material around it with a hole-punch. Great success!


Took the box with me home from the workshop, as I could not wait until it was in the car to see how it would look with all the drivers in place, hehe.. Had just brung one to the workshop..

Some pics:






Box is 0,66ft3 internally and sealed.

[AI James]

nice wheels, i rock the same ones. Love my rotiforms. im in the same environment really (jetta), i have Mille 6" in the doors and have made baffles in the dash for my 3" Mille and on my a-pillars in pod i have Mille 1 1/8 tweeters all Hertz drivers active on a Bit processor. i run 3 Sundown sa-8 for my substage, i been currently looking for an MK3 golf that i could change my parts over to though.

Definitely will be washing your progress, as i love these things.

[Haakon]

NUE wheels just look great on the mk3 Golf/Jetta (or Vento as it is called over here). Bought brand new ones, but they must have been really thrown about in the overseas shipping, because they arrived with a lot of scratch marks all over the front faces.

But returning them overseas would be too much of a hassle, so I started out removing the scratches myself with a DA polisher and some more or less aggressive cutting compound. Even though they have a diamond cut finish, they still have clearcoat over that, and it was just the clearcoat that was damaged. So they all turned out so well that no further action was needed. Just protected them with 2 layers of Swissvax Autobahn, a wax made for wheels, with teflon for easy removal of brake dust.

[Haakon]

Some pics of the sound deadening and speaker baffles for the doors. I took the advice from the silent coat dealer to make an effective solution to both rigidity and road noise reduction. So in the doors there is a sandwich of 2mm Silent Coat, then Silent Coat Noise Isolator 4mm, then another layer of 2mm Silent Coat.

A pic from the middle of the deadening process, noise isolator over silent coat:


Boot received 1 layer of Silent Coat and 1 layer of Noise Isolator 4mm.




Plastic panel on inside of boot received some Silent Coat Sound Absorber 7 to stop potential rattles. Very snug and tight fit when installing it afterwards, could feel it compressing the deadening when the screws were tightened. Nice


After a bit of cutting in the door panel and plastic map pocket/stock speaker placement, I had enough space to insert the spacer for the speaker.

Stock grille fits in stock place as per rules in Master OEM:

Removing the plastic map pocket it looks like this just now:

[Haakon]

This is the little amp that powers the 3" drivers on the dash and nothing more

And also the reason for going with 5" subs, it's basically all there is place for when making a flat/false floor install :p

That was a $2000 solution to a issue with space, hehe.. They do sound amazing though.. Got a much better price directly from the Focal distributor since they were going into a competition car.