A quick question regarding those Golden Eagle rear diffusers..I see alot of people with daily driven civics with rear diffusers, the question is: are they buying them for the functionality or just for the look? I know the help reduce wind drag, so it makes sense to put them on cars made for drag, but are these diffusers simply an aesthetic piece? They look nice, but I'm more of a function over form type of guy (most of the time).

 

Also where do people buy these? Do I have to search forums for people parting of their cars or is their a website that people buy them from?

 

Ehhh... it's not functional for a street car.

 

I admit it does look nice on Eg hatches, but I just don't wanna spend money on something that is useless or I don't need

 

I think they look like butt.

 

Diffusers or any other aero isnt functional on a street car.
The bumper diffusers is what you are talking about right?
If you are running track speeds on the street you are an idiot and you will either kill yourself or someone else sooner or later.
Most of the BS aero one can buy is crap anyway and really is for looks more than functionality. Reputable companies do research and R&D before producing a product.
Theirs looks like is made for drag racers anyway.
I wouldnt put any value on a product when this company started off making tow hooks.

 

Good point, I would never put one on my EG unless its built for drag racing. It's funny when I see these kids with stock non vtec d16s running their rear diffusers like they need it.

 

I guess. golden eagle isn't one of the biggest sleeving companies in the Honda game or anything.

that said, their engine products are great, minus the block guard, which no one should ever use.

 

What's wrong with the block guards? I know many people believe they are useless but why bash GE's specifically?

OP: I'd bet you 90% of the diffusers out there are just for looks these days, you may as well just get a hole saw and cut out some holes about 2-3" apart.

 

I think the undertray diffusers are functional, but I don't even know of anyone off the top of my head who makes them for our cars. I'm planning on doing some research into the airflow dynamics and making my own out of aluminum sheeting I get at work. End goal is to decrease drag and hopefully net myself a little bit extra MPG on the highway.

 

i'm not bashing ge's. i'm bashing all block guards. they serve no purpose. they aren't machined to the block so they don't support the cylinders evenly anyway. at least with the CSS the block is machined to fit the block guard correctly. ge even has admitted they only sell it because customers want it.

 

sounds like a nice project, I hope you have a good turn out and make some money out of it.

 

Any part we put on our cars, we don't need. This is a hobby and we do it because we enjoy doing it, not because we NEED to.

 

The rear diffusers/holes in the rear bumper do benefit a street car. But not necessarily in the same way as what they're intended for on a track car. The idea for a track car is to allow the air to escape from the rear bumper to reduce drag due to the parachute effect caused by the shape of the bumper. For a track car it will also reduce the rear end lift caused by the same effect. For a street car, it will still reduce drag which is definitely beneficial for a street car, but the benefit is translated to fuel efficiency (mpg's).

Block guards also do serve a purpose, but they're more of a band-aid than a true fix. They stiffen the cylinders, basically reducing the moment arm for cylinder flex, moving the point of max deflection to the center of the cylinder rather than the top. A band-aid fix for what the real solution would be to re-sleeve the cylinders.

 

thank you so much for this! it was what i wanted to say after reading all of the above, such enthusiasts dont think the fact that most high end cars such as ferrari, lamborghini and even the prius have diffusers. whatever the reason why the manufactor feels the reason to add diffusers to their cars is a far more smarter reason to have them on the cars in the first place. they didnt have them on much older cars simply because then is wasn't believed the cars to save on gas were needed to have diffusers. the fact is lots of newer cars dont just have a diffuser these days, its an intire under tray covering 90% of the bottem of the car. and its not only for more mpg's or speed but to help protect fuel lines and so on and so forth.

 

go autoworks makes a good looking kit.