[ThangCu35]

I just made my very own rear diffuser. It mounts onto the control arm mounting bolts and the rear bumper. It costed me about $35 for the metal sheet, hardwares and took me about 4 hours from start to finish. Overall I'm really happy with the way it turned out. Initially I did it just for cosmetic reasons, but after driving 80+ mph I'm beginning to believe it does add stability in the rear. All I use was a metal sheet cutter,drill, and a ruler of course. I'm thinking about painting it black to go along with the rear bumper.

I got some more tricks up the sleeves that I'm working on ^_^

 

[RAYSSPL]

that... actually looks very very good. maybe if you paint it black to blend in, it will look better.

your diffuser has potential to sell here if you so decide to mass produce it.

 

[Joe Schmoe]

Take a grinder to those sharp points before someone gets hurt.

 

[sh4branze]

Looks great.

 

[plebian]

Why did I suddenly get pictures in my head of cats going through a Slice-o-matic?

 

[ThangCu35]

Haha I guess I can round up the edges, I could save a squirrel's life one day.

 

[Narcosis]

Why did I suddenly get pictures in my head of cats going through a Slice-o-matic?

flash back from about 10years ago

"the itchy and scratchy showwwwwwww"

 

[rcntype]

Why did I suddenly get pictures in my head of cats going through a Slice-o-matic?

Oh man I wasn't even thinking of the sort until you. :lol:

Anyone know what type of shop/manufacturer does bends into sheet metal? Instead of those 90 deg brackets just have a bend and either bolt or weld onto the main piece. I want to make one, just don't know where to get the material - ie. sheet metal that size and bender.

 

[ThangCu35]

Ace hardwares sells the weldable metal sheet. It's thicker and harder to cut though.

 

[plebian]

Anyone know what type of shop/manufacturer does bends into sheet metal? Instead of those 90 deg brackets just have a bend and either bolt or weld onto the main piece. I want to make one, just don't know where to get the material - ie. sheet metal that size and bender.

They're called machine shops. We have one almost every mile here...

 

[Narcosis]

I got some more tricks up the sleeves that I'm working on ^_^

wth is that brown stuff on the tail light?!

 

[HCS]

I thought about doing this, but decided not to, as photoshop showed that it didn't look very good to me.

 

[SDSUsnowboards]

It looks good. I agree that it should be painted. I doubt it's giving you any aero benefit unless you have the bottom of the engine compartment sealed off with a panel under it. Do you? if not, then the air under the car is expanding into the engine bay, probably, making the diffuser redundant and unable t achieve its purpose.

Ideas
The brackets are ugly and create turbulence. I was thinking of taking a lesson from my childhood on this point. Does anyone here remember those foam planes you could construct then throw around? Do you remember how the wings were slotted half way through, and the body was slotted half way through? You simply slid the two pieces together, merging them. I think the same should be done here. Then, on the upper side of the diffuser (the side where there is no air flow), drill a hole into the 'fin' and insert a pin. Then use a glue to seal the upper and under sides of the fin where it meets the diffuser.

User large washers for each of the four bolts securing the diffuser to your bumper, if you are not already doing so. If the diffuser is working, then that means it's getting pulled down to the road. You don't want it coming lose from the bumper...

 

[rcntype]

They're called machine shops. We have one almost every mile here...

Wished I lived where you are then,... wait no i don't. :lol:

 

[RAYSSPL]

if you weld them, then that would look even BETTER for smoother air flow exit. the use of brackets would then be unnecessary.

 

[KIWI]

maybe a small write-up on how you made it, might try this myself as yours looks so good

 

[FiJi]

I agree that it should be painted. I doubt it's giving you any aero benefit unless you have the bottom of the engine compartment sealed off with a panel under it. Do you?

This +1

 

[ThangCu35]

I didn't mind using the brackets, you can't see them. I'm working on an under engine panel, but it's hard finding good mounting spots on the chassis.

 

[Ben88]

just have a look for pictures of the laile beatrush underpanel or the c-one itme for ideas on where you could mount it.

 

[butch_mr2]

I really like this. What are your measurements on your diffuser? I'm thinking of having it done from a shop which looks like this from difflow.