Your Mods To 2006-2011 FD Civics

[FallenAngel]

Ah sorry,

It is the K20Z2 for some stupid reason i kept thinking it was z3... >.<

[NZFD2]

Thanks mate, sorry havnt really been checking the forum, been busy,

nice..

any plans to lower it?

[SaBReT00tH]

hey guys...put some 20" K-Speed Biaggi's on my FD2 today. Lowered 3 inch in the front and 3 1/2 in the rear. Sits nice and low and no scrubbing at all! Even have full lock in steering!! Washing the car tomorrow and ill have pics up

did u change the springs or shocks at all? did u have to bash the guards?

[dmx]

after 3 months, finally got my Type-R under carriage cover (3 pcs)-stock Type-R and another 3 pcs optional Type-R.Total 6 pcs.
don't know,should be happy or sad, coz see these parts remaind me the downfall of our AUD (0.95 to 0.65), been knock out badly



-Front piece not in pic catalog

[ej20i]

wads the point of this anywae?

[markCivicVti]

make the car heavier ? lol

[TurBIce]

nice..

any plans to lower it?

nah mate,
was going to but looking at another car. and my dad will drive this car.
and he doesnt like lowered cars. lol, donno why~~

[Havocwreaker]

The idea of this kind of modification is to create an undertray...which is supposed to produce downforce.
The only problem is that the car won't be low enough or going fast enough to create any meaningful amount.

[gerard]

this the same kit under the hybrid?

[dmx]

Nothing to do, let me share some info.

wads the point of this anywae?

1. the covers made the bottom more smooth hence reducing some moving air trap at the under carriage
2. the car is alittle more quite while driving fast
3. Fuel consp. improve
and the main purpose is to smoothen the airflow underneath, to reduce drag

this is a simple yet useful mod if you understand the physics about air drag.. but it is also a mod which you can't really feel anything but its benefit does exist in daily driving...

make the car heavier ? lol

Never be scare with weight, otherwise we never do mods. it's only 2-3 kg, same like we buy 1 whole watermelon from wollies and put in the car

The idea of this kind of modification is to create an undertray...which is supposed to produce downforce.
The only problem is that the car won't be low enough or going fast enough to create any meaningful amount.

It's opposite result.
If the car lowered, we don't need this since only little air trap under the carriage.
and also if the car going fast (in stock height), may induce air lift (only at high speeds - 200kmh)
That's why, under cc get most effective for car stock height and at max speeds around 180 kmh or at city drive
but simple physics teaches that u cant reduce one factor and not increase another, the ducktail spoiler on the hybrid model probably as a counter to improve downforce when high speeds to counter the effects of the undertray carraige
The undercarriage covers are used to coverup holes/spaces that create air turbulence as a result a more restrictive path for airflow. Ground effect typically come in only at hi-speeds (not very high speeds) say above 80-180kph

extract from google:
The use of extensive undercarriage aero parts was the basis of the Ferrari Enzo bcos Ferrari President did not want ugly spoiler wings on the car surface instead he wanted a fluid body design. The Ferrari Enzo ‘s undercarriage aero parts help generate a down force of 400lbs at speed of 186kph. if u guys go to wikipedia/how stuff works, can find some writeup basically it’s a combination of flat panels & air tunnel. The Enzo only has a boot lip spoiler thats all. Same design concept has gone to the 430 Scuderia.

Do a google search on the Honda NSX JGTC GT500 car and its aerodynamics especially the undercarriage part, Same thing was done on the new nissan GTR
FYI. Holden HSV just revealed a few months ago, thats HSV will get under cc on next 2010 production to improve aero and fuel consmp.

[ktvin09]

Thanks for sharing DMX!

[Havocwreaker]

Th use of undertrays and diffusers work on similar principle to a wing. it makes use of the fluid properties of air conforming to Bernoulli's equation p1v1a1 = p2v2a2.
The lower your car is to the ground, the narrower the gap is and thus the air must speed up to maintain continuity and thus low pressure is created. That's downforce.

As for spoilers on the back of cars? There's two distinct things you can have and a lot of people get confused over the two. There's a wing and there's a spoiler. A wing is a separate element that actually produces downforce because of the pressure differential over the element. And there's the spoiler which does exactly what its name implies. It spoils the airflow over the top of the car so that the car body itself doesn't act like an airfoil and produce lift at high speeds. Anyone notice how your steering gets kinda floaty when you're going fast on a car without a spoiler? That's what it prevents.

I didn't realise it would have an effect of aeroaccoustic dampening; how much quieter is it inside now withe the undercarriage covers?
Also which model is this usually fitted to? JDM Civic Hybrids or all Civic Hybrids?