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-   -   Your thoughts on the enormous new hole in my bumper. (https://www.miataturbo.net/general-miata-chat-9/your-thoughts-enormous-new-hole-my-bumper-14760/)

hustler 12-14-2007 10:47 AM


Originally Posted by Ben (Post 185720)
maybe that grinder/autokonexion guy would be willing to make a miata bumper shaped drop-in ducted vent. that is, in the unlikey chance he's actually willing to listen to the market.

look, he made a hood for an NSX, he knows what he's doing, ok?!?! Maybe you should show a little more respect and just buy his product without questioning him. Do not disrespect a potential sponsor.

m2cupcar 12-14-2007 11:03 AM

Me thinks that each car and install is different enough to justify a "try and see if it works" approach. There are various ways to resolve each issue too. I have a big ass radiator and fan which seem to manage my coolant temps quite well in the SE summer heat, in traffic (sans a/c).

Below is an image showing my plans to restructure the interior of the mouth. The top section may be wishful thinking, but the bottom is absolutely feasible. In my case I've got a larger radiator, but even the stock radiator could be lowered some to provide direct exposure to oncoming air by dropping the lower part of the mouth shrouding as pictured.

http://i158.photobucket.com/albums/t...t/mouthmod.jpg

I agree- that hole just needs an insert with a finished edge :bigtu:

hustler 12-14-2007 11:26 AM

so should I consider that no air going through the intercooler is going to contribute to cooling the radiator from loosing flow and heating the air through the intercooler?

y8s 12-14-2007 12:22 PM

you left out the air directors / straighteners / unstraighteners rob

Savington 12-14-2007 01:46 PM


Originally Posted by Ben (Post 185668)
hole saw and jig saw? I've been trying to sack up and do this myself.
just clean up the white edge, then go after the hood situation.

Rotozip all the way, baby. I should have gone a lot slower, and I can still go back and clean up the edges quite a bit. I do have some touch-up paint, but I was also thinking about some black trim around the edges just to clean up the close-up aesthetics a little bit. I used a LOT of painters tape, a tape measure referenced off the top edge of the bumper to get the curvature right, and the cap from a bottle of kitty litter to get the curves at the ends.

I am also going to do a vented hood eventually, but you can see the oil cooler on the left in the photo. Vented hoods are great for getting air through whatever fits in the stock opening, but the oil cooler was going to have to go in the fenderwell, where it would be destroyed by road debris, or behind the intercooler, further sacrificing the current airflow situation. I agree the car is a lot cleaner without the hole, but I think it's growing on me. It's definitely more race-car than street car at this point anyway.

m2cupcar 12-14-2007 01:48 PM

Stacking exchangers works best when you have the hottest exchanger last to reach the passing air. So your boost air in the IC is going to be the "least hot", then the rad which will benefit because the passing air is still not as hot as the surface of the rad rows/fins.

The top won't work- not with the angle that steep. Another reason to build that bolted on front support so that it goes deeper into the bumper. I think that'd make a BIG difference in air movement into the mouth and through the exchangers.

If the support was moved deeper into the nose/bumper, then I think the contours would come closer to mirroring each other as the expand into the mouth.
http://i158.photobucket.com/albums/t...mouthideal.jpg

y8s I am awaiting your drawings :D

XxGoKoUxX 12-14-2007 02:11 PM

christ... if u want function over looks.... JUST RIP THE WHOLE BUMPER OFF! :)

hustler 12-14-2007 02:17 PM

I'm cutting a hole like the m3csl in the bottom of the bumper for my oil cooler. I can live with that.

cjernigan 12-14-2007 02:25 PM

Hustler, link?

I think it looks just fine. Once the edge is cleaned up it should be pretty badass. I like things like that.

hustler 12-14-2007 02:27 PM


Originally Posted by cjernigan (Post 185796)
Hustler, link?

I think it looks just fine. Once the edge is cleaned up it should be pretty badass. I like things like that.

http://www.weapon-r.com/english/images/838-111-106.jpg

hole saw + this

hustler 12-14-2007 02:54 PM

also, has anyone here used the bell air scooper? I'm going to get that shit on the car as soon as I get home to work on it again. It would be really cool if that worked...and I don't rip it off on my first trip to the track.

FoundSoul 12-14-2007 03:31 PM

I'm using it, and it's a great piece, but it does hang a bit low and you have to watch the curb 'stoppers' in parking lot spaces, and some stupidly high speed bumps.

hustler 12-14-2007 03:33 PM


Originally Posted by FoundSoul (Post 185825)
I'm using it, and it's a great piece, but it does hang a bit low and you have to watch the curb 'stoppers' in parking lot spaces, and some stupidly high speed bumps.

have you used it on the track in a turbo car? I have one to go under my r-pack spoiler. Its going to be stupid low.

I didn't know you drove a turbo miata...cool.

cjernigan 12-14-2007 03:58 PM


Originally Posted by hustler (Post 185828)
have you used it on the track in a turbo car? I have one to go under my r-pack spoiler. Its going to be stupid low.

I didn't know you drove a turbo miata...cool.

Him and Ben are in competition for the fastest 1.6 turbo in the county.

Savington 12-14-2007 04:28 PM

I'd have a Bell scooper, or something like it, but then I heard it hangs BELOW the R-package lip. My lip is under 4" from the ground. A meaningful scooper would reduce that to sub-3", which is just absurd.

Myron (2/3rdsCobra @ M.net) has done this really trick setup that's like a BEGi scooper, but he cut a slot in the R-package lip. The duct goes right under the IC into the rad.

hustler 12-14-2007 05:23 PM

I understand that I want to pull air through the radiator, but what about the intercooler? I remember some discussion that turbulent air is best for an intercooler (which doesn't make sense in respect to radiator cooling) so would it be best to seal off my intercooler inside the sealed radiator air track? I'm thinking about building a rad box like matt andrew's car, with a seperate foil for air to the rad, and not the intercooler.

hustler 12-14-2007 06:27 PM

1 Attachment(s)
I wonder if sealing off this area alone would do the trick. I have a really fucking big intercooler (begi #3), so I don't have much room to work with for ducting.
Attachment 215077

soflarick 12-14-2007 06:32 PM

Hustler, is that your car? Is that the way it sits now?

hustler 12-14-2007 06:35 PM


Originally Posted by soflarick (Post 185911)
Hustler, is that your car? Is that the way it sits now?

not my car (still travelling for work). My shit sits like that, with the same front to rear dimensions and spacing, but a much larger width and height intercooler.

slutz4 12-14-2007 07:13 PM


Originally Posted by Ben (Post 185720)
maybe that grinder/autokonexion guy would be willing to make a miata bumper shaped drop-in ducted vent. that is, in the unlikey chance he's actually willing to listen to the market.

he makes products if he thinks people will buy them. Id put money that if 10 people on here said theyd buy one hed make em.


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