extraction hood - Page 5 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 06-27-2007, 05:29 PM   #81
Elite Member
iTrader: (33)
 
RotorNutFD3S's Avatar
 
Join Date: Jan 2007
Location: Newnan, GA
Posts: 2,539
Total Cats: 29
Default

I saw this car via CR.net (http://page7.auctions.yahoo.co.jp/jp/auction/g57592443), but this hood looks pretty interesting, and along the same lines of what's being discussed. Anyone know anything about it, except that it's in Japan?

RotorNutFD3S is offline   Reply With Quote
Old 07-26-2007, 03:38 PM   #82
Ben
Supporting Vendor
Thread Starter
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

That hood looks like a finished version of what I did. I like it.
Ben is offline   Reply With Quote
Old 07-26-2007, 03:42 PM   #83
Ben
Supporting Vendor
Thread Starter
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

I put my turnsignals back in, after running around since spring without them.

IAT and CLT temps are both slightly up. My overflow bottle even gurgled a bit yesterday after shut down.

My conclusion is that the fresh air afforded by the open turn signal locations offers some cooling to the motor itself. I am not convinced that TSI type intakes without additional hood venting is a good idea, due to the fact that it would decrese the pressure delta between the front and rear of the radiator/intercooler sandwich. However, a TSI style intake + vented hood seems to be a good way to go.

I would like to also try a NACA headlight lid. But I don't have one.

B
Ben is offline   Reply With Quote
Old 07-26-2007, 03:48 PM   #84
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,244
Total Cats: 291
Default

That makes perfect sense to me. So are you still running around with blue franken-hood on? or did you create a finished hood from your original?
m2cupcar is offline   Reply With Quote
Old 07-26-2007, 03:56 PM   #85
Ben
Supporting Vendor
Thread Starter
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

Yes, my hood is blue. I still need to add another vent over the turbo area, similar to what you drew up. I think that was a couple pages back in this thread.

My dad's buddy owns a body/paint shop, and if I can make the hood look presentable, he'll paint it for me for the cost of paint. Which if I get him to do it at the same time as my hardtop, that's basically nothing. So I think I'll have a summer hood and a winter hood.

Of course, you're welcome to try the blue hood out any time.

B
Ben is offline   Reply With Quote
Old 07-26-2007, 04:41 PM   #86
Junior Member
 
Join Date: Jun 2005
Posts: 52
Total Cats: 0
Default

Quote:
Originally Posted by RotorNutFD3S View Post
I saw this car via CR.net (http://page7.auctions.yahoo.co.jp/jp/auction/g57592443), but this hood looks pretty interesting, and along the same lines of what's being discussed. Anyone know anything about it, except that it's in Japan?

That looks quite a bit like the RS Aizawa hood. RSpeed should be able to confirm that for you.
13inches is offline   Reply With Quote
Old 07-26-2007, 05:01 PM   #87
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,244
Total Cats: 291
Default

Quote:
Originally Posted by Ben View Post
...he'll paint it for me for the cost of paint...
Of course, you're welcome to try the blue hood out any time.
I need to hurry up and mod my hood so I can throw it in the mix.
I'd like to, but then I'd have to install a hood latch. :gay:
m2cupcar is offline   Reply With Quote
Old 07-26-2007, 05:07 PM   #88
Ben
Supporting Vendor
Thread Starter
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

My car is gray, not silver. You'd be pissed.
Yours is silverstone 2 stage, is it not?
Ben is offline   Reply With Quote
Old 07-26-2007, 05:34 PM   #89
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,244
Total Cats: 291
Default

It was when it was new. I got it after a repaint from a demolition derby on 285... that's why it was the cheapest Miata in the classifieds... ten years ago.
m2cupcar is offline   Reply With Quote
Old 07-26-2007, 05:50 PM   #90
Elite Member
iTrader: (11)
 
Join Date: Jun 2007
Location: Overland Park, Kansas
Posts: 5,382
Total Cats: 43
Default

Quote:
Originally Posted by Savington View Post
For turn signals, wire your front parking lights to flash. Should be two butt-splices per side and some heat-shrink if you're feeling daring. I've been running with no blinkers aside from those for several months now with no issues.
So I'm super late getting into this thread but I'd like to share my findings with no blinkers...

On friends S/C car I put a thermocouple under the passenger side of engine compartment by the fuse box and we went for a drive. On an 80 degree day the air was as hot as 130 degrees by the fuse box. Removed the blinkers and temps dropped to 102 degrees. Since then we put 2 washers under the back side of the hood hinges and removed the rubber gasket between the cowl and hood. With the hood shut you can see into the engine bay and when you're stopped the heat is just POURING out of the cowl now. Haven't taken temp measurements since then, but just wanted to share our results.

Blinkers:

I bought some 70,000mcd yellow 10mm LEDs off ebay, soldered on resistors, heat shrink, then wired them into the blinkers. Remove the metal clips that hold the stock turn signals in the bumper and run a 3/8" twist bit through the plastic on the bumper. That'll make the hole about 1/32nd larger than it was and the LED will VERY Snugly slip into those holes. The way I wired it was with 2 LEDs on each opening, the outside were wired to blink, the inside were wired to run constant. Works great! Hooked the side marker up to blink too.
elesjuan is offline   Reply With Quote
Old 07-26-2007, 06:04 PM   #91
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,244
Total Cats: 291
Default

pics?
I saw the heat pouring through my hood last friday while stuck in traffic.
m2cupcar is offline   Reply With Quote
Old 07-26-2007, 06:09 PM   #92
Elite Member
iTrader: (11)
 
Join Date: Jun 2007
Location: Overland Park, Kansas
Posts: 5,382
Total Cats: 43
Default

Yeah I'll grab some pictures as soon as possible. Its pretty cool.

I think the car looks a lot more aggressive without blinkers.
elesjuan is offline   Reply With Quote
Old 07-26-2007, 06:29 PM   #93
Ben
Supporting Vendor
Thread Starter
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

juan, does this car have loggable AIT and CLT sensors?
at speed, in your OPINION, does air enter through the turn signal area, and exit out the back of the hood?
Ben is offline   Reply With Quote
Old 07-26-2007, 06:44 PM   #94
Junior Member
 
Join Date: Oct 2006
Location: Vancouver, Canada
Posts: 199
Total Cats: 0
Default

Quote:
Originally Posted by Ben View Post
My conclusion is that the fresh air afforded by the open turn signal locations offers some cooling to the motor itself. I am not convinced that TSI type intakes without additional hood venting is a good idea, due to the fact that it would decrese the pressure delta between the front and rear of the radiator/intercooler sandwich. However, a TSI style intake + vented hood seems to be a good way to go.

I would like to also try a NACA headlight lid. But I don't have one.

B
Some one a few months ago on m.net someone who has knowledge (Emilio or Corky) stated the same thing. It is not that a Miata need vent to let air in but needs more vents to let air out.

I can not remember if the topic was Fans, Rads or Extractor Hood.
gwilo is offline   Reply With Quote
Old 07-26-2007, 08:30 PM   #95
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,244
Total Cats: 291
Default

I can guarantee a Miata needs holes in the hood when sitting in traffic after being in boost.:
m2cupcar is offline   Reply With Quote
Old 07-27-2007, 12:23 AM   #96
Junior Member
 
Join Date: Jul 2007
Location: chicago suburbs
Posts: 49
Total Cats: 0
Default

i dont see how the raised hood hinges would help. as i heard before and was stated before, they let air IN, not out. plus to cool your engine, you would want air entering through your radiator, not other places. in my opinion, the thing that would work best is get an actual extraction hood that let hot air out after the turbo, this would cool the turbo since it is still cooler than it.
i think this hood and keeping your turn signals in would maximize air flow through the radiator and past the turbo/engine etc.
i dont know much but this makes sense to me.
http://flyinmiata.com/index.php?dept...0%20%201990-97
bradh88 is offline   Reply With Quote
Old 07-27-2007, 12:27 AM   #97
Junior Member
 
Join Date: Jul 2007
Location: chicago suburbs
Posts: 49
Total Cats: 0
Default

i just read the testing of the hood i stated above and it proves my theory, plus it looks bad ***. sort of expensive, but totally worth it in my mind.
if your bored, read this.
http://flyinmiata.com/projects/CF_hood.asp
bradh88 is offline   Reply With Quote
Old 07-27-2007, 01:21 AM   #98
Senior Member
iTrader: (1)
 
Join Date: Aug 2006
Location: Illinois
Posts: 1,011
Total Cats: 7
Default

$600!! For that price I can afford to replace my overheated engine. =)
lazzer408 is offline   Reply With Quote
Old 07-27-2007, 02:11 AM   #99
Junior Member
 
Join Date: Jul 2007
Location: chicago suburbs
Posts: 49
Total Cats: 0
Default

good point but it looks cool. lol
bradh88 is offline   Reply With Quote
Old 07-27-2007, 10:28 AM   #100
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,244
Total Cats: 291
Default

No doubt raising the hood hinges works great when sitting at a traffic light with an engine bay soaked with heat. I suppose that's fine if it doesn't cause cooling problems at speed- and you don't mind the "jacked hood" look.

There's really two issues that can both be solved independently but will impact the other. The trick is to use methods that improve both issues. As proven by FM (and Ben and anybody else using extractors...) extractor holes/vents in the hood work at speed and work at a stop to vent the heat.

I'm still waiting for somebody buy/install one of these and report back...anybody?
m2cupcar is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 Yesterday 09:00 PM
1991 special edition with hard top full part out JC, NJ russian Miata parts for sale/trade 6 10-08-2015 04:01 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
WTB parts for HPDE car Voltwings WTB 5 09-11-2015 09:23 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:26 AM.