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-   -   Cut rear bumper (https://www.miataturbo.net/general-miata-chat-9/cut-rear-bumper-36606/)

Oscar 06-29-2009 03:32 PM

Cut rear bumper
 
3 Attachment(s)
I got bored last weekend and decided to do a little aero-work. Cut the rear bumper (skin and inner bumper) which should help a little at reducing lift at the rear. The bumper always looked like a sail seen from the underside so I hope this will not catch as much underbody air as it used to. I will be working on a diffuser soon too. Probably some riveted aluminum sheets starting at the diff and curving up like an Elise diffuser.

Pics:
Attachment 204971

Attachment 204972

Attachment 204973

It's cut straight, the muffler hangs a bit off so it looks like the bumper is a hackjob but IRL it looks pretty good.

johnmatt 06-29-2009 03:43 PM

I did the same thing but cut alittle higher

icantthink4155 06-29-2009 03:55 PM

I was thinking about this since I have a rip in my bumper, but I have a stock exhaust so I wasnt sure it would look good at all.

Oscar 06-29-2009 04:04 PM

I originally planned to cut it higher, but I liked how it turned out even with the cut out for the exhaust on the passenger side.

Just shows my enthuza exhaust peeping through. The longer I look at it, the more I like it

johnmatt 06-29-2009 07:05 PM

I wish I would have cut alittle lower on mine. Maybe between where mine is cut and yours is. I'll try and get a pic tomorrow

kotomile 06-29-2009 07:14 PM

Man, you can barely tell in the pics, if it weren't for the muffler peeking I wouldn't be able to tell (since the car is black). Maybe it's my monitor.

I did this too, exactly the same cut, and noticed the same thing with the muffler. It doesn't bother me terribly but I may yet paint the muffler itself black.

m2cupcar 06-29-2009 09:51 PM

Yeah, paint your muffler black and fool the masses.

kotomile 06-29-2009 09:55 PM


Originally Posted by m2cupcar (Post 425146)
Yeah, paint your muffler black and fool the masses.

Sarcasm? :eek5:

Vashthestampede 06-29-2009 10:07 PM

How come lots of you guys cut the rear bumper? Is it aesthetically pleasing to you, or do you really do it for airflow?

Just something about it doesn't look right to me. But in any case Oscar, nice to put a car to the name. I don't recall ever seeing your miata before.

kotomile 06-29-2009 10:19 PM

I tore mine right in the middle, so this looks a lot better than the tear did. I also find it aesthetically pleasing, if there's an aerodynamic bonus, then all the better.

Cspence 06-29-2009 10:21 PM

2 Attachment(s)

Originally Posted by Vashthestampede (Post 425152)
How come lots of you guys cut the rear bumper?

Because it makes us better than you!....

Attachment 204969

Attachment 204970

Laur3ns 06-30-2009 01:57 AM

Nice cutting Oscer, looks nice. Now find (2) Elise diffussers, come cut mine too and we will be having some Miata aero at our next track event.

Savington 06-30-2009 02:14 AM

1 Attachment(s)
I cut mine (off) too.

Attachment 204967

NA6C-Guy 06-30-2009 02:35 AM

If I didn't have a rear lip I would cut mine like that, but don't want to make my lip spoiler useless.

miatamania 06-30-2009 09:20 AM


Originally Posted by NA6C-Guy (Post 425205)
If I didn't have a rear lip I would cut mine like that, but don't want to make my lip spoiler useless.

Sell it.

kotomile 06-30-2009 09:30 AM


Originally Posted by NA6C-Guy (Post 425205)
If I didn't have a rear lip I would cut mine like that, but don't want to make my lip spoiler useless.

Isn't it already useless?

Unless I'm mistaken, the only thing it's useful for is being semi-rare and acting as a tiny parachute.

Oscar 06-30-2009 12:14 PM


Originally Posted by m2cupcar (Post 425146)
Yeah, paint your muffler black and fool the masses.


not a bad idea actually. Maybe photoshop it first to see how it looks, but it'll me more of a sleeper look then.


Vash: I thought I whored out more pics than just this one before.. What doesn't seem right to you?

cueball1 06-30-2009 02:43 PM

I think both Oscar and Cspence did a nice job with that. Looks sharp. Hopefully helps. Doesn't look 1/2 ass at all.

Savington that might be a touch too far. Just a touch. I remember not too long ago that car was pretty! Your track addiction's making it fast but fugly.

ThePass 06-30-2009 03:01 PM

^form follows function, therefore savington's car is beautiful.

Nice cut on the bumper. That's the same as the first cut I did on mine way back when... I've since gone much higher and done the Elise diffuser. Looks good though!

hustler 06-30-2009 03:56 PM

savington's shit looks meaty.


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